Bump version to 0.0.68

Implement D205, D209, and D210 (#398 )
Implement D200 (OneLinerDocstring) (#397 )
2022-10-10 16:50:09 -04:00 · 2022-10-10 16:49:51 -04:00 · 2022-10-10 16:07:51 -04:00 · 2022-10-10 15:35:23 -04:00 · 2022-10-10 15:18:18 -04:00 · 2022-10-10 15:15:38 -04:00
121 changed files with 7384 additions and 1503 deletions
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -14,6 +14,12 @@ your proposed change.
 ruff is written in Rust (1.63.0). You'll need to install the
 [Rust toolchain](https://www.rust-lang.org/tools/install) for development.

+You'll also need [Insta](https://insta.rs/docs/) to update snapshot tests:
+
+```shell
+cargo install cargo-insta
+```
+
 ### Development

 After cloning the repository, run ruff locally with:
@@ -58,7 +64,7 @@ similar rules are implemented.
 To add a test fixture, create a file under `resources/test/fixtures`, named to match the `CheckCode`
 you defined earlier (e.g., `E402.py`). This file should contain a variety of violations and
 non-violations designed to evaluate and demonstrate the behavior of your lint rule. Run ruff locally
-with (e.g.) `cargo run resources/test/fixtures/E402.py`. Once you're satisified with the output,
+with (e.g.) `cargo run resources/test/fixtures/E402.py`. Once you're satisfied with the output,
 codify the behavior as a snapshot test by adding a new function to the `mod tests` section of
 `src/linter.rs`, like so:

--- a/Cargo.lock
+++ b/Cargo.lock
@@ -21,18 +21,18 @@ dependencies = [

 [[package]]
 name = "aho-corasick"
-version = "0.7.18"
+version = "0.7.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e37cfd5e7657ada45f742d6e99ca5788580b5c529dc78faf11ece6dc702656f"
+checksum = "b4f55bd91a0978cbfd91c457a164bab8b4001c833b7f323132c0a4e1922dd44e"
 dependencies = [
 "memchr",
 ]

 [[package]]
 name = "android_system_properties"
-version = "0.1.4"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d7ed72e1635e121ca3e79420540282af22da58be50de153d36f81ddc6b83aa9e"
+checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311"
 dependencies = [
 "libc",
 ]
@@ -45,9 +45,15 @@ checksum = "c7021ce4924a3f25f802b2cccd1af585e39ea1a363a1aa2e72afe54b67a3a7a7"

 [[package]]
 name = "anyhow"
-version = "1.0.60"
+version = "1.0.65"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c794e162a5eff65c72ef524dfe393eb923c354e350bb78b9c7383df13f3bc142"
+checksum = "98161a4e3e2184da77bb14f02184cdd111e83bbbcc9979dfee3c44b9a85f5602"
+
+[[package]]
+name = "ascii"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d92bec98840b8f03a5ff5413de5293bfcd8bf96467cf5452609f939ec6f5de16"

 [[package]]
 name = "ascii-canvas"
@@ -60,9 +66,9 @@ dependencies = [

 [[package]]
 name = "async-channel"
-version = "1.7.0"
+version = "1.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4b31b87a3367ed04dbcbc252bce3f2a8172fef861d47177524c503c908dff2c6"
+checksum = "e14485364214912d3b19cc3435dde4df66065127f05fa0d75c712f36f12c2f28"
 dependencies = [
 "concurrent-queue",
 "event-listener",
@@ -85,9 +91,9 @@ dependencies = [

 [[package]]
 name = "async-global-executor"
-version = "2.2.0"
+version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5262ed948da60dd8956c6c5aca4d4163593dddb7b32d73267c93dab7b2e98940"
+checksum = "0da5b41ee986eed3f524c380e6d64965aea573882a8907682ad100f7859305ca"
 dependencies = [
 "async-channel",
 "async-executor",
@@ -95,16 +101,16 @@ dependencies = [
 "async-lock",
 "blocking",
 "futures-lite",
- "num_cpus",
 "once_cell",
 ]

 [[package]]
 name = "async-io"
-version = "1.7.0"
+version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e5e18f61464ae81cde0a23e713ae8fd299580c54d697a35820cfd0625b8b0e07"
+checksum = "83e21f3a490c72b3b0cf44962180e60045de2925d8dff97918f7ee43c8f637c7"
 dependencies = [
+ "autocfg",
 "concurrent-queue",
 "futures-lite",
 "libc",
@@ -129,11 +135,12 @@ dependencies = [

 [[package]]
 name = "async-process"
-version = "1.4.0"
+version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf2c06e30a24e8c78a3987d07f0930edf76ef35e027e7bdb063fccafdad1f60c"
+checksum = "02111fd8655a613c25069ea89fc8d9bb89331fa77486eb3bc059ee757cfa481c"
 dependencies = [
 "async-io",
+ "autocfg",
 "blocking",
 "cfg-if 1.0.0",
 "event-listener",
@@ -302,9 +309,9 @@ dependencies = [

 [[package]]
 name = "bumpalo"
-version = "3.10.0"
+version = "3.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37ccbd214614c6783386c1af30caf03192f17891059cecc394b4fb119e363de3"
+checksum = "c1ad822118d20d2c234f427000d5acc36eabe1e29a348c89b63dd60b13f28e5d"

 [[package]]
 name = "byte-tools"
@@ -376,9 +383,9 @@ dependencies = [

 [[package]]
 name = "chrono"
-version = "0.4.21"
+version = "0.4.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f725f340c3854e3cb3ab736dc21f0cca183303acea3b3ffec30f141503ac8eb"
+checksum = "bfd4d1b31faaa3a89d7934dbded3111da0d2ef28e3ebccdb4f0179f5929d1ef1"
 dependencies = [
 "iana-time-zone",
 "js-sys",
@@ -397,9 +404,9 @@ checksum = "fff857943da45f546682664a79488be82e69e43c1a7a2307679ab9afb3a66d2e"

 [[package]]
 name = "clap"
-version = "4.0.1"
+version = "4.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd03107d0f87139c1774a15f3db2165b0652b5460c58c27e561f89c20c599eaf"
+checksum = "30607dd93c420c6f1f80b544be522a0238a7db35e6a12968d28910983fee0df0"
 dependencies = [
 "atty",
 "bitflags",
@@ -412,9 +419,9 @@ dependencies = [

 [[package]]
 name = "clap_derive"
-version = "4.0.1"
+version = "4.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca689d7434ce44517a12a89456b2be4d1ea1cafcd8f581978c03d45f5a5c12a7"
+checksum = "a4a307492e1a34939f79d3b6b9650bd2b971513cd775436bf2b78defeb5af00b"
 dependencies = [
 "heck",
 "proc-macro-error",
@@ -473,27 +480,17 @@ dependencies = [

 [[package]]
 name = "console"
-version = "0.15.1"
+version = "0.15.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89eab4d20ce20cea182308bca13088fecea9c05f6776cf287205d41a0ed3c847"
+checksum = "c050367d967ced717c04b65d8c619d863ef9292ce0c5760028655a2fb298718c"
 dependencies = [
 "encode_unicode",
+ "lazy_static",
 "libc",
- "once_cell",
 "terminal_size",
 "winapi 0.3.9",
 ]

-[[package]]
-name = "core-foundation"
-version = "0.9.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "194a7a9e6de53fa55116934067c844d9d749312f75c6f6d0980e8c252f8c2146"
-dependencies = [
- "core-foundation-sys",
- "libc",
-]
-
 [[package]]
 name = "core-foundation-sys"
 version = "0.8.3"
@@ -502,9 +499,9 @@ checksum = "5827cebf4670468b8772dd191856768aedcb1b0278a04f989f7766351917b9dc"

 [[package]]
 name = "cpufeatures"
-version = "0.2.2"
+version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "59a6001667ab124aebae2a495118e11d30984c3a653e99d86d58971708cf5e4b"
+checksum = "28d997bd5e24a5928dd43e46dc529867e207907fe0b239c3477d924f7f2ca320"
 dependencies = [
 "libc",
 ]
@@ -541,26 +538,24 @@ dependencies = [

 [[package]]
 name = "crossbeam-epoch"
-version = "0.9.10"
+version = "0.9.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "045ebe27666471bb549370b4b0b3e51b07f56325befa4284db65fc89c02511b1"
+checksum = "f916dfc5d356b0ed9dae65f1db9fc9770aa2851d2662b988ccf4fe3516e86348"
 dependencies = [
 "autocfg",
 "cfg-if 1.0.0",
 "crossbeam-utils",
 "memoffset",
- "once_cell",
 "scopeguard",
 ]

 [[package]]
 name = "crossbeam-utils"
-version = "0.8.11"
+version = "0.8.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51887d4adc7b564537b15adcfb307936f8075dfcd5f00dde9a9f1d29383682bc"
+checksum = "edbafec5fa1f196ca66527c1b12c2ec4745ca14b50f1ad8f9f6f720b55d11fac"
 dependencies = [
 "cfg-if 1.0.0",
- "once_cell",
 ]

 [[package]]
@@ -665,9 +660,9 @@ dependencies = [

 [[package]]
 name = "either"
-version = "1.7.0"
+version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f107b87b6afc2a64fd13cac55fe06d6c8859f12d4b14cbcdd2c67d0976781be"
+checksum = "90e5c1c8368803113bf0c9584fc495a58b86dc8a29edbf8fe877d21d9507e797"

 [[package]]
 name = "ena"
@@ -750,11 +745,10 @@ checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"

 [[package]]
 name = "form_urlencoded"
-version = "1.0.1"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fc25a87fa4fd2094bffb06925852034d90a17f0d1e05197d4956d3555752191"
+checksum = "a9c384f161156f5260c24a097c56119f9be8c798586aecc13afbcbe7b7e26bf8"
 dependencies = [
- "matches",
 "percent-encoding",
 ]

@@ -795,9 +789,9 @@ checksum = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"

 [[package]]
 name = "futures"
-version = "0.3.21"
+version = "0.3.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f73fe65f54d1e12b726f517d3e2135ca3125a437b6d998caf1962961f7172d9e"
+checksum = "7f21eda599937fba36daeb58a22e8f5cee2d14c4a17b5b7739c7c8e5e3b8230c"
 dependencies = [
 "futures-channel",
 "futures-core",
@@ -810,9 +804,9 @@ dependencies = [

 [[package]]
 name = "futures-channel"
-version = "0.3.21"
+version = "0.3.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3083ce4b914124575708913bca19bfe887522d6e2e6d0952943f5eac4a74010"
+checksum = "30bdd20c28fadd505d0fd6712cdfcb0d4b5648baf45faef7f852afb2399bb050"
 dependencies = [
 "futures-core",
 "futures-sink",
@@ -820,15 +814,15 @@ dependencies = [

 [[package]]
 name = "futures-core"
-version = "0.3.21"
+version = "0.3.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c09fd04b7e4073ac7156a9539b57a484a8ea920f79c7c675d05d289ab6110d3"
+checksum = "4e5aa3de05362c3fb88de6531e6296e85cde7739cccad4b9dfeeb7f6ebce56bf"

 [[package]]
 name = "futures-executor"
-version = "0.3.21"
+version = "0.3.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9420b90cfa29e327d0429f19be13e7ddb68fa1cccb09d65e5706b8c7a749b8a6"
+checksum = "9ff63c23854bee61b6e9cd331d523909f238fc7636290b96826e9cfa5faa00ab"
 dependencies = [
 "futures-core",
 "futures-task",
@@ -837,9 +831,9 @@ dependencies = [

 [[package]]
 name = "futures-io"
-version = "0.3.21"
+version = "0.3.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc4045962a5a5e935ee2fdedaa4e08284547402885ab326734432bed5d12966b"
+checksum = "bbf4d2a7a308fd4578637c0b17c7e1c7ba127b8f6ba00b29f717e9655d85eb68"

 [[package]]
 name = "futures-lite"
@@ -858,9 +852,9 @@ dependencies = [

 [[package]]
 name = "futures-macro"
-version = "0.3.21"
+version = "0.3.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "33c1e13800337f4d4d7a316bf45a567dbcb6ffe087f16424852d97e97a91f512"
+checksum = "42cd15d1c7456c04dbdf7e88bcd69760d74f3a798d6444e16974b505b0e62f17"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -869,21 +863,21 @@ dependencies = [

 [[package]]
 name = "futures-sink"
-version = "0.3.21"
+version = "0.3.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "21163e139fa306126e6eedaf49ecdb4588f939600f0b1e770f4205ee4b7fa868"
+checksum = "21b20ba5a92e727ba30e72834706623d94ac93a725410b6a6b6fbc1b07f7ba56"

 [[package]]
 name = "futures-task"
-version = "0.3.21"
+version = "0.3.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57c66a976bf5909d801bbef33416c41372779507e7a6b3a5e25e4749c58f776a"
+checksum = "a6508c467c73851293f390476d4491cf4d227dbabcd4170f3bb6044959b294f1"

 [[package]]
 name = "futures-util"
-version = "0.3.21"
+version = "0.3.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d8b7abd5d659d9b90c8cba917f6ec750a74e2dc23902ef9cd4cc8c8b22e6036a"
+checksum = "44fb6cb1be61cc1d2e43b262516aafcf63b241cffdb1d3fa115f91d9c7b09c90"
 dependencies = [
 "futures-channel",
 "futures-core",
@@ -990,13 +984,19 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"

 [[package]]
-name = "iana-time-zone"
-version = "0.1.41"
+name = "hexf-parse"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1779539f58004e5dba1c1f093d44325ebeb244bfc04b791acdc0aaeca9c04570"
+checksum = "dfa686283ad6dd069f105e5ab091b04c62850d3e4cf5d67debad1933f55023df"
+
+[[package]]
+name = "iana-time-zone"
+version = "0.1.50"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd911b35d940d2bd0bea0f9100068e5b97b51a1cbe13d13382f132e0365257a0"
 dependencies = [
 "android_system_properties",
- "core-foundation",
+ "core-foundation-sys",
 "js-sys",
 "wasm-bindgen",
 "winapi 0.3.9",
@@ -1004,11 +1004,10 @@ dependencies = [

 [[package]]
 name = "idna"
-version = "0.2.3"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "418a0a6fab821475f634efe3ccc45c013f742efe03d853e8d3355d5cb850ecf8"
+checksum = "e14ddfc70884202db2244c223200c204c2bda1bc6e0998d11b5e024d657209e6"
 dependencies = [
- "matches",
 "unicode-bidi",
 "unicode-normalization",
 ]
@@ -1045,13 +1044,13 @@ dependencies = [

 [[package]]
 name = "insta"
-version = "1.19.1"
+version = "1.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc61e98be01e89296f3343a878e9f8ca75a494cb5aaf29df65ef55734aeb85f5"
+checksum = "581d4e3314cae4536e5d22ffd23189d4a374696c5ef733eadafae0ed273fd303"
 dependencies = [
 "console",
+ "lazy_static",
 "linked-hash-map",
- "once_cell",
 "serde",
 "similar",
 "yaml-rust",
@@ -1092,9 +1091,9 @@ checksum = "6c8af84674fe1f223a982c933a0ee1086ac4d4052aa0fb8060c12c6ad838e754"

 [[package]]
 name = "js-sys"
-version = "0.3.59"
+version = "0.3.60"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "258451ab10b34f8af53416d1fdab72c22e805f0c92a1136d59470ec0b11138b2"
+checksum = "49409df3e3bf0856b916e2ceaca09ee28e6871cf7d9ce97a692cacfdb2a25a47"
 dependencies = [
 "wasm-bindgen",
 ]
@@ -1163,10 +1162,40 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"

 [[package]]
-name = "libc"
-version = "0.2.127"
+name = "lexical-parse-float"
+version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "505e71a4706fa491e9b1b55f51b95d4037d0821ee40131190475f692b35b009b"
+checksum = "683b3a5ebd0130b8fb52ba0bdc718cc56815b6a097e28ae5a6997d0ad17dc05f"
+dependencies = [
+ "lexical-parse-integer",
+ "lexical-util",
+ "static_assertions",
+]
+
+[[package]]
+name = "lexical-parse-integer"
+version = "0.8.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d0994485ed0c312f6d965766754ea177d07f9c00c9b82a5ee62ed5b47945ee9"
+dependencies = [
+ "lexical-util",
+ "static_assertions",
+]
+
+[[package]]
+name = "lexical-util"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5255b9ff16ff898710eb9eb63cb39248ea8a5bb036bea8085b1a767ff6c4e3fc"
+dependencies = [
+ "static_assertions",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.134"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "329c933548736bc49fd575ee68c89e8be4d260064184389a5b77517cddd99ffb"

 [[package]]
 name = "libcst"
@@ -1200,9 +1229,9 @@ checksum = "0717cef1bc8b636c6e1c1bbdefc09e6322da8a9321966e8928ef80d20f7f770f"

 [[package]]
 name = "lock_api"
-version = "0.4.7"
+version = "0.4.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "327fa5b6a6940e4699ec49a9beae1ea4845c6bab9314e4f84ac68742139d8c53"
+checksum = "435011366fe56583b16cf956f9df0095b405b82d76425bc8981c0e22e60ec4df"
 dependencies = [
 "autocfg",
 "scopeguard",
@@ -1220,9 +1249,9 @@ dependencies = [

 [[package]]
 name = "lz4_flex"
-version = "0.9.4"
+version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c038063f7a78126c539d666a0323a2032de5e7366012cd14a6eafc5ba290bbd6"
+checksum = "1a8cbbb2831780bc3b9c15a41f5b49222ef756b6730a95f3decfdd15903eb5a3"
 dependencies = [
 "twox-hash",
 ]
@@ -1241,9 +1270,9 @@ checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"

 [[package]]
 name = "memmap2"
-version = "0.5.5"
+version = "0.5.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3a79b39c93a7a5a27eeaf9a23b5ff43f1b9e0ad6b1cdd441140ae53c35613fc7"
+checksum = "95af15f345b17af2efc8ead6080fb8bc376f8cec1b35277b935637595fe77498"
 dependencies = [
 "libc",
 ]
@@ -1259,9 +1288,9 @@ dependencies = [

 [[package]]
 name = "miniz_oxide"
-version = "0.5.3"
+version = "0.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6f5c75688da582b8ffc1f1799e9db273f32133c49e048f614d22ec3256773ccc"
+checksum = "96590ba8f175222643a85693f33d26e9c8a015f599c216509b1a6894af675d34"
 dependencies = [
 "adler",
 ]
@@ -1436,9 +1465,9 @@ checksum = "624a8340c38c1b80fd549087862da4ba43e08858af025b236e509b6649fc13d5"

 [[package]]
 name = "os_str_bytes"
-version = "6.2.0"
+version = "6.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "648001efe5d5c0102d8cea768e348da85d90af8ba91f0bea908f157951493cd4"
+checksum = "9ff7415e9ae3fff1225851df9e0d9e4e5479f947619774677a63572e55e80eff"

 [[package]]
 name = "parking"
@@ -1522,9 +1551,9 @@ checksum = "9fa00462b37ead6d11a82c9d568b26682d78e0477dc02d1966c013af80969739"

 [[package]]
 name = "percent-encoding"
-version = "2.1.0"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
+checksum = "478c572c3d73181ff3c2539045f6eb99e5491218eae919370993b890cdbdd98e"

 [[package]]
 name = "petgraph"
@@ -1632,10 +1661,11 @@ checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"

 [[package]]
 name = "polling"
-version = "2.2.0"
+version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "685404d509889fade3e86fe3a5803bca2ec09b0c0778d5ada6ec8bf7a8de5259"
+checksum = "899b00b9c8ab553c743b3e11e87c5c7d423b2a2de229ba95b24a756344748011"
 dependencies = [
+ "autocfg",
 "cfg-if 1.0.0",
 "libc",
 "log",
@@ -1681,9 +1711,9 @@ dependencies = [

 [[package]]
 name = "proc-macro2"
-version = "1.0.43"
+version = "1.0.46"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a2ca2c61bc9f3d74d2886294ab7b9853abd9c1ad903a3ac7815c58989bb7bab"
+checksum = "94e2ef8dbfc347b10c094890f778ee2e36ca9bb4262e86dc99cd217e35f3470b"
 dependencies = [
 "unicode-ident",
 ]
@@ -1697,6 +1727,12 @@ dependencies = [
 "proc-macro2",
 ]

+[[package]]
+name = "radium"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc33ff2d4973d518d823d61aa239014831e521c75da58e3df4840d3f47749d09"
+
 [[package]]
 name = "rand"
 version = "0.7.3"
@@ -1719,7 +1755,7 @@ checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
 dependencies = [
 "libc",
 "rand_chacha 0.3.1",
- "rand_core 0.6.3",
+ "rand_core 0.6.4",
 ]

 [[package]]
@@ -1739,7 +1775,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
 dependencies = [
 "ppv-lite86",
- "rand_core 0.6.3",
+ "rand_core 0.6.4",
 ]

 [[package]]
@@ -1753,9 +1789,9 @@ dependencies = [

 [[package]]
 name = "rand_core"
-version = "0.6.3"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
 dependencies = [
 "getrandom 0.2.7",
 ]
@@ -1871,7 +1907,7 @@ dependencies = [

 [[package]]
 name = "ruff"
-version = "0.0.53"
+version = "0.0.68"
 dependencies = [
 "anyhow",
 "bincode",
@@ -1890,13 +1926,18 @@ dependencies = [
 "libcst",
 "log",
 "notify",
+ "num-bigint",
 "once_cell",
 "path-absolutize",
 "rayon",
 "regex",
+ "rustpython-ast",
+ "rustpython-common",
 "rustpython-parser",
 "serde",
 "serde_json",
+ "strum",
+ "strum_macros",
 "toml",
 "update-informer",
 "walkdir",
@@ -1917,16 +1958,40 @@ dependencies = [
 [[package]]
 name = "rustpython-ast"
 version = "0.1.0"
-source = "git+https://github.com/charliermarsh/RustPython.git?rev=4f457893efc381ad5c432576b24bcc7e4a08c641#4f457893efc381ad5c432576b24bcc7e4a08c641"
+source = "git+https://github.com/charliermarsh/RustPython.git?rev=778ae2aeb521d0438d2a91bd11238bb5c2bf9d4f#778ae2aeb521d0438d2a91bd11238bb5c2bf9d4f"
 dependencies = [
 "num-bigint",
+ "rustpython-common",
 "rustpython-compiler-core",
 ]

+[[package]]
+name = "rustpython-common"
+version = "0.0.0"
+source = "git+https://github.com/charliermarsh/RustPython.git?rev=778ae2aeb521d0438d2a91bd11238bb5c2bf9d4f#778ae2aeb521d0438d2a91bd11238bb5c2bf9d4f"
+dependencies = [
+ "ascii",
+ "cfg-if 1.0.0",
+ "hexf-parse",
+ "lexical-parse-float",
+ "libc",
+ "lock_api",
+ "num-bigint",
+ "num-complex",
+ "num-traits",
+ "once_cell",
+ "radium",
+ "rand 0.8.5",
+ "siphasher",
+ "unic-ucd-category",
+ "volatile",
+ "widestring",
+]
+
 [[package]]
 name = "rustpython-compiler-core"
 version = "0.1.2"
-source = "git+https://github.com/charliermarsh/RustPython.git?rev=4f457893efc381ad5c432576b24bcc7e4a08c641#4f457893efc381ad5c432576b24bcc7e4a08c641"
+source = "git+https://github.com/charliermarsh/RustPython.git?rev=778ae2aeb521d0438d2a91bd11238bb5c2bf9d4f#778ae2aeb521d0438d2a91bd11238bb5c2bf9d4f"
 dependencies = [
 "bincode",
 "bitflags",
@@ -1943,7 +2008,7 @@ dependencies = [
 [[package]]
 name = "rustpython-parser"
 version = "0.1.2"
-source = "git+https://github.com/charliermarsh/RustPython.git?rev=4f457893efc381ad5c432576b24bcc7e4a08c641#4f457893efc381ad5c432576b24bcc7e4a08c641"
+source = "git+https://github.com/charliermarsh/RustPython.git?rev=778ae2aeb521d0438d2a91bd11238bb5c2bf9d4f#778ae2aeb521d0438d2a91bd11238bb5c2bf9d4f"
 dependencies = [
 "ahash",
 "anyhow",
@@ -2003,24 +2068,24 @@ dependencies = [

 [[package]]
 name = "semver"
-version = "1.0.13"
+version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "93f6841e709003d68bb2deee8c343572bf446003ec20a583e76f7b15cebf3711"
+checksum = "e25dfac463d778e353db5be2449d1cce89bd6fd23c9f1ea21310ce6e5a1b29c4"

 [[package]]
 name = "serde"
-version = "1.0.143"
+version = "1.0.145"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53e8e5d5b70924f74ff5c6d64d9a5acd91422117c60f48c4e07855238a254553"
+checksum = "728eb6351430bccb993660dfffc5a72f91ccc1295abaa8ce19b27ebe4f75568b"
 dependencies = [
 "serde_derive",
 ]

 [[package]]
 name = "serde_derive"
-version = "1.0.143"
+version = "1.0.145"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3d8e8de557aee63c26b85b947f5e59b690d0454c753f3adeb5cd7835ab88391"
+checksum = "81fa1584d3d1bcacd84c277a0dfe21f5b0f6accf4a23d04d4c6d61f1af522b4c"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -2029,9 +2094,9 @@ dependencies = [

 [[package]]
 name = "serde_json"
-version = "1.0.83"
+version = "1.0.85"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "38dd04e3c8279e75b31ef29dbdceebfe5ad89f4d0937213c53f7d49d01b3d5a7"
+checksum = "e55a28e3aaef9d5ce0506d0a14dbba8054ddc7e499ef522dd8b26859ec9d4a44"
 dependencies = [
 "itoa",
 "ryu",
@@ -2130,15 +2195,15 @@ dependencies = [

 [[package]]
 name = "smallvec"
-version = "1.9.0"
+version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2fd0db749597d91ff862fd1d55ea87f7855a744a8425a64695b6fca237d1dad1"
+checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"

 [[package]]
 name = "socket2"
-version = "0.4.4"
+version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "66d72b759436ae32898a2af0a14218dbf55efde3feeb170eb623637db85ee1e0"
+checksum = "02e2d2db9033d13a1567121ddd7a095ee144db4e1ca1b1bda3419bc0da294ebd"
 dependencies = [
 "libc",
 "winapi 0.3.9",
@@ -2191,10 +2256,32 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"

 [[package]]
-name = "syn"
-version = "1.0.99"
+name = "strum"
+version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "58dbef6ec655055e20b86b15a8cc6d439cca19b667537ac6a1369572d151ab13"
+checksum = "063e6045c0e62079840579a7e47a355ae92f60eb74daaf156fb1e84ba164e63f"
+dependencies = [
+ "strum_macros",
+]
+
+[[package]]
+name = "strum_macros"
+version = "0.24.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e385be0d24f186b4ce2f9982191e7101bb737312ad61c1f2f984f34bcf85d59"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "rustversion",
+ "syn",
+]
+
+[[package]]
+name = "syn"
+version = "1.0.101"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e90cde112c4b9690b8cbe810cba9ddd8bc1d7472e2cae317b69e9438c1cba7d2"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -2370,6 +2457,18 @@ dependencies = [
 "unic-ucd-version",
 ]

+[[package]]
+name = "unic-ucd-category"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b8d4591f5fcfe1bd4453baaf803c40e1b1e69ff8455c47620440b46efef91c0"
+dependencies = [
+ "matches",
+ "unic-char-property",
+ "unic-char-range",
+ "unic-ucd-version",
+]
+
 [[package]]
 name = "unic-ucd-ident"
 version = "0.9.0"
@@ -2398,30 +2497,30 @@ checksum = "099b7128301d285f79ddd55b9a83d5e6b9e97c92e0ea0daebee7263e932de992"

 [[package]]
 name = "unicode-ident"
-version = "1.0.3"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c4f5b37a154999a8f3f98cc23a628d850e154479cd94decf3414696e12e31aaf"
+checksum = "dcc811dc4066ac62f84f11307873c4850cb653bfa9b1719cee2bd2204a4bc5dd"

 [[package]]
 name = "unicode-normalization"
-version = "0.1.21"
+version = "0.1.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "854cbdc4f7bc6ae19c820d44abdc3277ac3e1b2b93db20a636825d9322fb60e6"
+checksum = "5c5713f0fc4b5db668a2ac63cdb7bb4469d8c9fed047b1d0292cc7b0ce2ba921"
 dependencies = [
 "tinyvec",
 ]

 [[package]]
 name = "unicode-xid"
-version = "0.2.3"
+version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "957e51f3646910546462e67d5f7599b9e4fb8acdd304b087a6494730f9eebf04"
+checksum = "f962df74c8c05a667b5ee8bcf162993134c104e96440b663c8daa176dc772d8c"

 [[package]]
 name = "unicode_names2"
-version = "0.5.0"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eec8e807a365e5c972debc47b8f06d361b37b94cfd18d48f7adc715fb86404dd"
+checksum = "029df4cc8238cefc911704ff8fa210853a0f3bce2694d8f51181dd41ee0f3301"

 [[package]]
 name = "untrusted"
@@ -2463,13 +2562,12 @@ dependencies = [

 [[package]]
 name = "url"
-version = "2.2.2"
+version = "2.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a507c383b2d33b5fc35d1861e77e6b383d158b2da5e14fe51b83dfedf6fd578c"
+checksum = "0d68c799ae75762b8c3fe375feb6600ef5602c883c5d21eb51c09f22b83c4643"
 dependencies = [
 "form_urlencoded",
 "idna",
- "matches",
 "percent-encoding",
 ]

@@ -2489,6 +2587,12 @@ version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"

+[[package]]
+name = "volatile"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8e76fae08f03f96e166d2dfda232190638c10e0383841252416f9cfe2ae60e6"
+
 [[package]]
 name = "waker-fn"
 version = "1.1.0"
@@ -2526,9 +2630,9 @@ checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"

 [[package]]
 name = "wasm-bindgen"
-version = "0.2.82"
+version = "0.2.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc7652e3f6c4706c8d9cd54832c4a4ccb9b5336e2c3bd154d5cccfbf1c1f5f7d"
+checksum = "eaf9f5aceeec8be17c128b2e93e031fb8a4d469bb9c4ae2d7dc1888b26887268"
 dependencies = [
 "cfg-if 1.0.0",
 "wasm-bindgen-macro",
@@ -2536,9 +2640,9 @@ dependencies = [

 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.82"
+version = "0.2.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "662cd44805586bd52971b9586b1df85cdbbd9112e4ef4d8f41559c334dc6ac3f"
+checksum = "4c8ffb332579b0557b52d268b91feab8df3615f265d5270fec2a8c95b17c1142"
 dependencies = [
 "bumpalo",
 "log",
@@ -2551,9 +2655,9 @@ dependencies = [

 [[package]]
 name = "wasm-bindgen-futures"
-version = "0.4.32"
+version = "0.4.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa76fb221a1f8acddf5b54ace85912606980ad661ac7a503b4570ffd3a624dad"
+checksum = "23639446165ca5a5de86ae1d8896b737ae80319560fbaa4c2887b7da6e7ebd7d"
 dependencies = [
 "cfg-if 1.0.0",
 "js-sys",
@@ -2563,9 +2667,9 @@ dependencies = [

 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.82"
+version = "0.2.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b260f13d3012071dfb1512849c033b1925038373aea48ced3012c09df952c602"
+checksum = "052be0f94026e6cbc75cdefc9bae13fd6052cdcaf532fa6c45e7ae33a1e6c810"
 dependencies = [
 "quote",
 "wasm-bindgen-macro-support",
@@ -2573,9 +2677,9 @@ dependencies = [

 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.82"
+version = "0.2.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5be8e654bdd9b79216c2929ab90721aa82faf65c48cdf08bdc4e7f51357b80da"
+checksum = "07bc0c051dc5f23e307b13285f9d75df86bfdf816c5721e573dec1f9b8aa193c"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -2586,15 +2690,15 @@ dependencies = [

 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.82"
+version = "0.2.83"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6598dd0bd3c7d51095ff6531a5b23e02acdc81804e30d8f07afb77b7215a140a"
+checksum = "1c38c045535d93ec4f0b4defec448e4291638ee608530863b1e2ba115d4fff7f"

 [[package]]
 name = "web-sys"
-version = "0.3.59"
+version = "0.3.60"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed055ab27f941423197eb86b2035720b1a3ce40504df082cac2ecc6ed73335a1"
+checksum = "bcda906d8be16e728fd5adc5b729afad4e444e106ab28cd1c7256e54fa61510f"
 dependencies = [
 "js-sys",
 "wasm-bindgen",
@@ -2612,9 +2716,9 @@ dependencies = [

 [[package]]
 name = "webpki-roots"
-version = "0.22.4"
+version = "0.22.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1c760f0d366a6c24a02ed7816e23e691f5d92291f94d15e836006fd11b04daf"
+checksum = "368bfe657969fb01238bb756d351dcade285e0f6fcbd36dcb23359a5169975be"
 dependencies = [
 "webpki",
 ]
@@ -2630,15 +2734,21 @@ dependencies = [

 [[package]]
 name = "which"
-version = "4.2.5"
+version = "4.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c4fb54e6113b6a8772ee41c3404fb0301ac79604489467e0a9ce1f3e97c24ae"
+checksum = "1c831fbbee9e129a8cf93e7747a82da9d95ba8e16621cae60ec2cdc849bacb7b"
 dependencies = [
 "either",
- "lazy_static",
 "libc",
+ "once_cell",
 ]

+[[package]]
+name = "widestring"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "17882f045410753661207383517a6f62ec3dbeb6a4ed2acce01f0728238d1983"
+
 [[package]]
 name = "winapi"
 version = "0.2.8"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ruff"
-version = "0.0.53"
+version = "0.0.68"
 edition = "2021"

 [lib]
@@ -27,12 +27,17 @@ once_cell = { version = "1.13.1" }
 path-absolutize = { version = "3.0.13", features = ["once_cell_cache"] }
 rayon = { version = "1.5.3" }
 regex = { version = "1.6.0" }
-rustpython-parser = { features = ["lalrpop"], git = "https://github.com/charliermarsh/RustPython.git", rev = "4f457893efc381ad5c432576b24bcc7e4a08c641" }
+rustpython-ast = { features = ["unparse"], git = "https://github.com/charliermarsh/RustPython.git", rev = "778ae2aeb521d0438d2a91bd11238bb5c2bf9d4f" }
+rustpython-parser = { features = ["lalrpop"], git = "https://github.com/charliermarsh/RustPython.git", rev = "778ae2aeb521d0438d2a91bd11238bb5c2bf9d4f" }
+rustpython-common = { git = "https://github.com/charliermarsh/RustPython.git", rev = "778ae2aeb521d0438d2a91bd11238bb5c2bf9d4f" }
 serde = { version = "1.0.143", features = ["derive"] }
 serde_json = { version = "1.0.83" }
 toml = { version = "0.5.9" }
 update-informer = { version = "0.5.0", default_features = false, features = ["pypi"], optional = true }
 walkdir = { version = "2.3.2" }
+strum = { version = "0.24.1", features = ["strum_macros"] }
+strum_macros = "0.24.3"
+num-bigint = "0.4.3"

 [dev-dependencies]
 insta = { version = "1.19.1", features = ["yaml"] }
--- a/README.md
+++ b/README.md
@@ -130,6 +130,8 @@ Options:
          Enable automatic additions of noqa directives to failing lines
      --dummy-variable-rgx <DUMMY_VARIABLE_RGX>
          Regular expression matching the name of dummy variables
+      --target-version <TARGET_VERSION>
+          The minimum Python version that should be supported
  -h, --help
          Print help information
  -V, --version
@@ -213,6 +215,10 @@ ruff also implements some of the most popular Flake8 plugins natively, including
 - [`flake8-builtins`](https://pypi.org/project/flake8-builtins/)
 - [`flake8-super`](https://pypi.org/project/flake8-super/)
 - [`flake8-print`](https://pypi.org/project/flake8-print/)
+- [`flake8-comprehensions`](https://pypi.org/project/flake8-comprehensions/) (11/16)
+- [`flake8-bugbear`](https://pypi.org/project/flake8-bugbear/) (3/32)
+- [`flake8-docstrings`](https://pypi.org/project/flake8-docstrings/) (6/47)
+- [`pyupgrade`](https://pypi.org/project/pyupgrade/) (partial)

 Beyond rule-set parity, ruff suffers from the following limitations vis-à-vis Flake8:

@@ -222,59 +228,89 @@ Beyond rule-set parity, ruff suffers from the following limitations vis-à-vis F

 ## Rules

-| Code | Name | Message |
-| ---- | ----- | ------- |
-| E402 | ModuleImportNotAtTopOfFile | Module level import not at top of file |
-| E501 | LineTooLong | Line too long (89 > 88 characters) |
-| E711 | NoneComparison | Comparison to `None` should be `cond is None` |
-| E712 | TrueFalseComparison | Comparison to `True` should be `cond is True` |
-| E713 | NotInTest | Test for membership should be `not in` |
-| E714 | NotIsTest | Test for object identity should be `is not` |
-| E721 | TypeComparison | do not compare types, use `isinstance()` |
-| E722 | DoNotUseBareExcept | Do not use bare `except` |
-| E731 | DoNotAssignLambda | Do not assign a lambda expression, use a def |
-| E741 | AmbiguousVariableName | ambiguous variable name '...' |
-| E742 | AmbiguousClassName | ambiguous class name '...' |
-| E743 | AmbiguousFunctionName | ambiguous function name '...' |
-| E902 | IOError | ... |
-| E999 | SyntaxError | SyntaxError: ... |
-| F401 | UnusedImport | `...` imported but unused |
-| F402 | ImportShadowedByLoopVar | import '...' from line 1 shadowed by loop variable |
-| F403 | ImportStarUsed | `from ... import *` used; unable to detect undefined names |
-| F404 | LateFutureImport | from __future__ imports must occur at the beginning of the file |
-| F405 | ImportStarUsage | '...' may be undefined, or defined from star imports: ... |
-| F406 | ImportStarNotPermitted | `from ... import *` only allowed at module level |
-| F407 | FutureFeatureNotDefined | future feature '...' is not defined |
-| F541 | FStringMissingPlaceholders | f-string without any placeholders |
-| F601 | MultiValueRepeatedKeyLiteral | Dictionary key literal repeated |
-| F602 | MultiValueRepeatedKeyVariable | Dictionary key `...` repeated |
-| F621 | TooManyExpressionsInStarredAssignment | too many expressions in star-unpacking assignment |
-| F622 | TwoStarredExpressions | two starred expressions in assignment |
-| F631 | AssertTuple | Assert test is a non-empty tuple, which is always `True` |
-| F632 | IsLiteral | use ==/!= to compare constant literals |
-| F633 | InvalidPrintSyntax | use of >> is invalid with print function |
-| F634 | IfTuple | If test is a tuple, which is always `True` |
-| F701 | BreakOutsideLoop | `break` outside loop |
-| F702 | ContinueOutsideLoop | `continue` not properly in loop |
-| F704 | YieldOutsideFunction | a `yield` or `yield from` statement outside of a function/method |
-| F706 | ReturnOutsideFunction | a `return` statement outside of a function/method |
-| F707 | DefaultExceptNotLast | an `except:` block as not the last exception handler |
-| F722 | ForwardAnnotationSyntaxError | syntax error in forward annotation '...' |
-| F821 | UndefinedName | Undefined name `...` |
-| F822 | UndefinedExport | Undefined name `...` in `__all__` |
-| F823 | UndefinedLocal | Local variable `...` referenced before assignment |
-| F831 | DuplicateArgumentName | Duplicate argument name in function definition |
-| F841 | UnusedVariable | Local variable `...` is assigned to but never used |
-| F901 | RaiseNotImplemented | `raise NotImplemented` should be `raise NotImplementedError` |
-| A001 | BuiltinVariableShadowing | Variable `...` is shadowing a python builtin |
-| A002 | BuiltinArgumentShadowing | Argument `...` is shadowing a python builtin |
-| A003 | BuiltinAttributeShadowing | class attribute `...` is shadowing a python builtin |
-| SPR001 | SuperCallWithParameters | Use `super()` instead of `super(__class__, self)` |
-| T201 | PrintFound | `print` found |
-| T203 | PPrintFound | `pprint` found` |
-| R001 | UselessObjectInheritance | Class `...` inherits from object |
-| R002 | NoAssertEquals | `assertEquals` is deprecated, use `assertEqual` instead |
-| M001 | UnusedNOQA | Unused `noqa` directive |
+The ✅ emoji indicates a rule is enabled by default.
+
+The 🛠 emoji indicates that a rule is automatically fixable by the `--fix` command-line option.
+
+| Code | Name | Message |     |     |
+| ---- | ---- | ------- | --- | --- |
+| E402 | ModuleImportNotAtTopOfFile | Module level import not at top of file | ✅ |  |
+| E501 | LineTooLong | Line too long (89 > 88 characters) | ✅ |  |
+| E711 | NoneComparison | Comparison to `None` should be `cond is None` | ✅ |  |
+| E712 | TrueFalseComparison | Comparison to `True` should be `cond is True` | ✅ |  |
+| E713 | NotInTest | Test for membership should be `not in` | ✅ |  |
+| E714 | NotIsTest | Test for object identity should be `is not` | ✅ |  |
+| E721 | TypeComparison | Do not compare types, use `isinstance()` | ✅ |  |
+| E722 | DoNotUseBareExcept | Do not use bare `except` | ✅ |  |
+| E731 | DoNotAssignLambda | Do not assign a lambda expression, use a def | ✅ |  |
+| E741 | AmbiguousVariableName | Ambiguous variable name: `...` | ✅ |  |
+| E742 | AmbiguousClassName | Ambiguous class name: `...` | ✅ |  |
+| E743 | AmbiguousFunctionName | Ambiguous function name: `...` | ✅ |  |
+| E902 | IOError | IOError: `...` | ✅ |  |
+| E999 | SyntaxError | SyntaxError: `...` | ✅ |  |
+| W292 | NoNewLineAtEndOfFile | No newline at end of file | ✅ |  |
+| F401 | UnusedImport | `...` imported but unused | ✅ | 🛠 |
+| F402 | ImportShadowedByLoopVar | Import `...` from line 1 shadowed by loop variable | ✅ |  |
+| F403 | ImportStarUsed | `from ... import *` used; unable to detect undefined names | ✅ |  |
+| F404 | LateFutureImport | `from __future__` imports must occur at the beginning of the file | ✅ |  |
+| F405 | ImportStarUsage | `...` may be undefined, or defined from star imports: `...` | ✅ |  |
+| F406 | ImportStarNotPermitted | `from ... import *` only allowed at module level | ✅ |  |
+| F407 | FutureFeatureNotDefined | Future feature `...` is not defined | ✅ |  |
+| F541 | FStringMissingPlaceholders | f-string without any placeholders | ✅ |  |
+| F601 | MultiValueRepeatedKeyLiteral | Dictionary key literal repeated | ✅ |  |
+| F602 | MultiValueRepeatedKeyVariable | Dictionary key `...` repeated | ✅ |  |
+| F621 | ExpressionsInStarAssignment | Too many expressions in star-unpacking assignment | ✅ |  |
+| F622 | TwoStarredExpressions | Two starred expressions in assignment | ✅ |  |
+| F631 | AssertTuple | Assert test is a non-empty tuple, which is always `True` | ✅ |  |
+| F632 | IsLiteral | Use `==` and `!=` to compare constant literals | ✅ |  |
+| F633 | InvalidPrintSyntax | Use of `>>` is invalid with `print` function | ✅ |  |
+| F634 | IfTuple | If test is a tuple, which is always `True` | ✅ |  |
+| F701 | BreakOutsideLoop | `break` outside loop | ✅ |  |
+| F702 | ContinueOutsideLoop | `continue` not properly in loop | ✅ |  |
+| F704 | YieldOutsideFunction | `yield` or `yield from` statement outside of a function/method | ✅ |  |
+| F706 | ReturnOutsideFunction | `return` statement outside of a function/method | ✅ |  |
+| F707 | DefaultExceptNotLast | An `except:` block as not the last exception handler | ✅ |  |
+| F722 | ForwardAnnotationSyntaxError | Syntax error in forward annotation: `...` | ✅ |  |
+| F821 | UndefinedName | Undefined name `...` | ✅ |  |
+| F822 | UndefinedExport | Undefined name `...` in `__all__` | ✅ |  |
+| F823 | UndefinedLocal | Local variable `...` referenced before assignment | ✅ |  |
+| F831 | DuplicateArgumentName | Duplicate argument name in function definition | ✅ |  |
+| F841 | UnusedVariable | Local variable `...` is assigned to but never used | ✅ |  |
+| F901 | RaiseNotImplemented | `raise NotImplemented` should be `raise NotImplementedError` | ✅ |  |
+| A001 | BuiltinVariableShadowing | Variable `...` is shadowing a python builtin |  |  |
+| A002 | BuiltinArgumentShadowing | Argument `...` is shadowing a python builtin |  |  |
+| A003 | BuiltinAttributeShadowing | Class attribute `...` is shadowing a python builtin |  |  |
+| B011 | DoNotAssertFalse | Do not `assert False` (`python -O` removes these calls), raise `AssertionError()` |  | 🛠 |
+| B014 | DuplicateHandlerException | Exception handler with duplicate exception: `ValueError |  | 🛠 |
+| B025 | DuplicateTryBlockException | try-except block with duplicate exception `Exception` |  |  |
+| C400 | UnnecessaryGeneratorList | Unnecessary generator - rewrite as a list comprehension |  |  |
+| C401 | UnnecessaryGeneratorSet | Unnecessary generator - rewrite as a set comprehension |  |  |
+| C402 | UnnecessaryGeneratorDict | Unnecessary generator - rewrite as a dict comprehension |  |  |
+| C403 | UnnecessaryListComprehensionSet | Unnecessary list comprehension - rewrite as a set comprehension |  |  |
+| C404 | UnnecessaryListComprehensionDict | Unnecessary list comprehension - rewrite as a dict comprehension |  |  |
+| C405 | UnnecessaryLiteralSet | Unnecessary <list/tuple> literal - rewrite as a set literal |  |  |
+| C406 | UnnecessaryLiteralDict | Unnecessary <list/tuple> literal - rewrite as a dict literal |  |  |
+| C408 | UnnecessaryCollectionCall | Unnecessary <dict/list/tuple> call - rewrite as a literal |  |  |
+| C409 | UnnecessaryLiteralWithinTupleCall | Unnecessary <list/tuple> literal passed to tuple() - remove the outer call to tuple() |  |  |
+| C410 | UnnecessaryLiteralWithinListCall | Unnecessary <list/tuple> literal passed to list() - rewrite as a list literal |  |  |
+| C415 | UnnecessarySubscriptReversal | Unnecessary subscript reversal of iterable within <reversed/set/sorted>() |  |  |
+| T201 | PrintFound | `print` found |  | 🛠 |
+| T203 | PPrintFound | `pprint` found |  | 🛠 |
+| U001 | UselessMetaclassType | `__metaclass__ = type` is implied |  | 🛠 |
+| U002 | UnnecessaryAbspath | `abspath(__file__)` is unnecessary in Python 3.9 and later |  | 🛠 |
+| U003 | TypeOfPrimitive | Use `str` instead of `type(...)` |  | 🛠 |
+| U004 | UselessObjectInheritance | Class `...` inherits from object |  | 🛠 |
+| U005 | DeprecatedUnittestAlias | `assertEquals` is deprecated, use `assertEqual` instead |  | 🛠 |
+| U006 | UsePEP585Annotation | Use `list` instead of `List` for type annotations |  | 🛠 |
+| U007 | UsePEP604Annotation | Use `X \| Y` for type annotations |  | 🛠 |
+| U008 | SuperCallWithParameters | Use `super()` instead of `super(__class__, self)` |  | 🛠 |
+| D200 | OneLinerDocstring | One-line docstring should fit on one line |  |  |
+| D205 | BlankLineAfterSummary | 1 blank line required between summary line and description |  |  |
+| D209 | NewLineAfterLastParagraph | Multi-line docstring closing quotes should be on a separate line |  |  |
+| D210 | NoSurroundingWhitespace | No whitespaces allowed surrounding docstring text |  |  |
+| D400 | DocstringEndsInNonPeriod | First line should end with a period |  |  |
+| D419 | EmptyDocstring | Docstring is empty |  |  |
+| M001 | UnusedNOQA | Unused `noqa` directive |  | 🛠 |

 ## Integrations

@@ -301,9 +337,9 @@ jobs:
  build:
    runs-on: ubuntu-latest
    steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
      - name: Install Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
        with:
          python-version: "3.10"
      - name: Install dependencies
@@ -477,4 +513,4 @@ MIT
 ## Contributing

 Contributions are welcome and hugely appreciated. To get started, check out the
-[contributing guidelines](https://github.com/charliermarsh/ruff/blob/main/CONTRIBUTORS.md).
+[contributing guidelines](https://github.com/charliermarsh/ruff/blob/main/CONTRIBUTING.md).
--- a/examples/generate_rules_table.rs
+++ b/examples/generate_rules_table.rs
@@ -1,19 +1,26 @@
 /// Generate a Markdown-compatible table of supported lint rules.
-use ruff::checks::{CheckCode, ALL_CHECK_CODES};
+use strum::IntoEnumIterator;
+
+use ruff::checks::{CheckCode, DEFAULT_CHECK_CODES};

 fn main() {
-    let mut check_codes: Vec<CheckCode> = ALL_CHECK_CODES.to_vec();
-    check_codes.sort();
-
-    println!("| Code | Name | Message |");
-    println!("| ---- | ----- | ------- |");
-    for check_code in check_codes {
+    println!("| Code | Name | Message |     |     |");
+    println!("| ---- | ---- | ------- | --- | --- |");
+    for check_code in CheckCode::iter() {
        let check_kind = check_code.kind();
+        let default_token = if DEFAULT_CHECK_CODES.contains(&check_code) {
+            "✅"
+        } else {
+            ""
+        };
+        let fix_token = if check_kind.fixable() { "🛠" } else { "" };
        println!(
-            "| {} | {} | {} |",
-            check_kind.code().as_str(),
-            check_kind.name(),
-            check_kind.body()
+            "| {} | {} | {} | {} | {} |",
+            check_kind.code().as_ref(),
+            check_kind.as_ref(),
+            check_kind.body().replace("|", r"\|"),
+            default_token,
+            fix_token
        );
    }
 }
--- a/examples/generate_source_code.rs
+++ b/examples/generate_source_code.rs
@@ -0,0 +1,26 @@
+use std::path::PathBuf;
+
+use anyhow::Result;
+use clap::Parser;
+use rustpython_parser::parser;
+
+use ruff::code_gen::SourceGenerator;
+use ruff::fs;
+
+#[derive(Debug, Parser)]
+struct Cli {
+    #[arg(required = true)]
+    file: PathBuf,
+}
+
+fn main() -> Result<()> {
+    let cli = Cli::parse();
+
+    let contents = fs::read_file(&cli.file)?;
+    let python_ast = parser::parse_program(&contents, &cli.file.to_string_lossy())?;
+    let mut generator = SourceGenerator::new();
+    generator.unparse_suite(&python_ast)?;
+    println!("{}", generator.generate()?);
+
+    Ok(())
+}
--- a/resources/test/fixtures/B011.py
+++ b/resources/test/fixtures/B011.py
@@ -0,0 +1,10 @@
+"""
+Should emit:
+B011 - on line 8
+B011 - on line 10
+"""
+
+assert 1 != 2
+assert False
+assert 1 != 2, "message"
+assert False, "message"
--- a/resources/test/fixtures/B014.py
+++ b/resources/test/fixtures/B014.py
@@ -0,0 +1,76 @@
+"""
+Should emit:
+B014 - on lines 11, 17, 28, 42, 49, 56, and 74.
+"""
+
+import binascii
+import re
+
+try:
+    pass
+except (Exception, TypeError):
+    # TypeError is a subclass of Exception, so it doesn't add anything
+    pass
+
+try:
+    pass
+except (OSError, OSError) as err:
+    # Duplicate exception types are useless
+    pass
+
+
+class MyError(Exception):
+    pass
+
+
+try:
+    pass
+except (MyError, MyError):
+    # Detect duplicate non-builtin errors
+    pass
+
+
+try:
+    pass
+except (MyError, Exception) as e:
+    # Don't assume that we're all subclasses of Exception
+    pass
+
+
+try:
+    pass
+except (MyError, BaseException) as e:
+    # But we *can* assume that everything is a subclass of BaseException
+    pass
+
+
+try:
+    pass
+except (re.error, re.error):
+    # Duplicate exception types as attributes
+    pass
+
+
+try:
+    pass
+except (IOError, EnvironmentError, OSError):
+    # Detect if a primary exception and any its aliases are present.
+    #
+    # Since Python 3.3, IOError, EnvironmentError, WindowsError, mmap.error,
+    # socket.error and select.error are aliases of OSError. See PEP 3151 for
+    # more info.
+    pass
+
+
+try:
+    pass
+except (MyException, NotImplemented):
+    # NotImplemented is not an exception, let's not crash on it.
+    pass
+
+
+try:
+    pass
+except (ValueError, binascii.Error):
+    # binascii.Error is a subclass of ValueError.
+    pass
--- a/resources/test/fixtures/B025.py
+++ b/resources/test/fixtures/B025.py
@@ -0,0 +1,38 @@
+"""
+Should emit:
+B025 - on lines 15, 22, 31
+"""
+
+import pickle
+
+try:
+    a = 1
+except ValueError:
+    a = 2
+finally:
+    a = 3
+
+try:
+    a = 1
+except ValueError:
+    a = 2
+except ValueError:
+    a = 2
+
+try:
+    a = 1
+except pickle.PickleError:
+    a = 2
+except ValueError:
+    a = 2
+except pickle.PickleError:
+    a = 2
+
+try:
+    a = 1
+except (ValueError, TypeError):
+    a = 2
+except ValueError:
+    a = 2
+except (OSError, TypeError):
+    a = 2
--- a/resources/test/fixtures/C400.py
+++ b/resources/test/fixtures/C400.py
@@ -0,0 +1 @@
+x = list(x for x in range(3))
--- a/resources/test/fixtures/C401.py
+++ b/resources/test/fixtures/C401.py
@@ -0,0 +1 @@
+x = set(x for x in range(3))
--- a/resources/test/fixtures/C402.py
+++ b/resources/test/fixtures/C402.py
@@ -0,0 +1 @@
+d = dict((x, x) for x in range(3))
--- a/resources/test/fixtures/C403.py
+++ b/resources/test/fixtures/C403.py
@@ -0,0 +1 @@
+s = set([x for x in range(3)])
--- a/resources/test/fixtures/C404.py
+++ b/resources/test/fixtures/C404.py
@@ -0,0 +1 @@
+d = dict([(i, i) for i in range(3)])
--- a/resources/test/fixtures/C405.py
+++ b/resources/test/fixtures/C405.py
@@ -0,0 +1,5 @@
+s1 = set([1, 2])
+s2 = set((1, 2))
+s3 = set([])
+s4 = set(())
+s5 = set()
--- a/resources/test/fixtures/C406.py
+++ b/resources/test/fixtures/C406.py
@@ -0,0 +1,5 @@
+d1 = dict([(1, 2)])
+d2 = dict(((1, 2),))
+d3 = dict([])
+d4 = dict(())
+d5 = dict()
--- a/resources/test/fixtures/C408.py
+++ b/resources/test/fixtures/C408.py
@@ -0,0 +1,5 @@
+t = tuple()
+l = list()
+d1 = dict()
+d2 = dict(a=1)
+d3 = dict(**d2)
--- a/resources/test/fixtures/C409.py
+++ b/resources/test/fixtures/C409.py
@@ -0,0 +1,3 @@
+t1 = tuple([1, 2])
+t2 = tuple((1, 2))
+t3 = tuple([])
--- a/resources/test/fixtures/C410.py
+++ b/resources/test/fixtures/C410.py
@@ -0,0 +1,4 @@
+l1 = list([1, 2])
+l2 = list((1, 2))
+l3 = list([])
+l4 = list(())
--- a/resources/test/fixtures/C415.py
+++ b/resources/test/fixtures/C415.py
@@ -0,0 +1,9 @@
+lst = [2, 1, 3]
+a = set(lst[::-1])
+b = reversed(lst[::-1])
+c = sorted(lst[::-1])
+d = sorted(lst[::-1], reverse=True)
+e = set(lst[2:-1])
+f = set(lst[:1:-1])
+g = set(lst[::1])
+h = set(lst[::-2])
--- a/resources/test/fixtures/D.py
+++ b/resources/test/fixtures/D.py
@@ -0,0 +1,534 @@
+# No docstring, so we can test D100
+from functools import wraps
+import os
+from .expected import Expectation
+from typing import overload
+
+
+expectation = Expectation()
+expect = expectation.expect
+
+expect('class_', 'D101: Missing docstring in public class')
+
+
+class class_:
+
+    expect('meta', 'D419: Docstring is empty')
+
+    class meta:
+        """"""
+
+    @expect('D102: Missing docstring in public method')
+    def method(self=None):
+        pass
+
+    def _ok_since_private(self=None):
+        pass
+
+    @overload
+    def overloaded_method(self, a: int) -> str:
+        ...
+
+    @overload
+    def overloaded_method(self, a: str) -> str:
+        """Foo bar documentation."""
+        ...
+
+    def overloaded_method(a):
+        """Foo bar documentation."""
+        return str(a)
+
+    expect('overloaded_method',
+           "D418: Function/ Method decorated with @overload"
+           " shouldn't contain a docstring")
+
+    @property
+    def foo(self):
+        """The foo of the thing, which isn't in imperitive mood."""
+        return "hello"
+
+    @expect('D102: Missing docstring in public method')
+    def __new__(self=None):
+        pass
+
+    @expect('D107: Missing docstring in __init__')
+    def __init__(self=None):
+        pass
+
+    @expect('D105: Missing docstring in magic method')
+    def __str__(self=None):
+        pass
+
+    @expect('D102: Missing docstring in public method')
+    def __call__(self=None, x=None, y=None, z=None):
+        pass
+
+
+@expect('D419: Docstring is empty')
+def function():
+    """ """
+    def ok_since_nested():
+        pass
+
+    @expect('D419: Docstring is empty')
+    def nested():
+        ''
+
+
+def function_with_nesting():
+    """Foo bar documentation."""
+    @overload
+    def nested_overloaded_func(a: int) -> str:
+        ...
+
+    @overload
+    def nested_overloaded_func(a: str) -> str:
+        """Foo bar documentation."""
+        ...
+
+    def nested_overloaded_func(a):
+        """Foo bar documentation."""
+        return str(a)
+
+
+expect('nested_overloaded_func',
+       "D418: Function/ Method decorated with @overload"
+       " shouldn't contain a docstring")
+
+
+@overload
+def overloaded_func(a: int) -> str:
+    ...
+
+
+@overload
+def overloaded_func(a: str) -> str:
+    """Foo bar documentation."""
+    ...
+
+
+def overloaded_func(a):
+    """Foo bar documentation."""
+    return str(a)
+
+
+expect('overloaded_func',
+       "D418: Function/ Method decorated with @overload"
+       " shouldn't contain a docstring")
+
+
+@expect('D200: One-line docstring should fit on one line with quotes '
+        '(found 3)')
+@expect('D212: Multi-line docstring summary should start at the first line')
+def asdlkfasd():
+    """
+    Wrong.
+    """
+
+
+@expect('D201: No blank lines allowed before function docstring (found 1)')
+def leading_space():
+
+    """Leading space."""
+
+
+@expect('D202: No blank lines allowed after function docstring (found 1)')
+def trailing_space():
+    """Leading space."""
+
+    pass
+
+
+@expect('D201: No blank lines allowed before function docstring (found 1)')
+@expect('D202: No blank lines allowed after function docstring (found 1)')
+def trailing_and_leading_space():
+
+    """Trailing and leading space."""
+
+    pass
+
+
+expect('LeadingSpaceMissing',
+       'D203: 1 blank line required before class docstring (found 0)')
+
+
+class LeadingSpaceMissing:
+    """Leading space missing."""
+
+
+expect('WithLeadingSpace',
+       'D211: No blank lines allowed before class docstring (found 1)')
+
+
+class WithLeadingSpace:
+
+    """With leading space."""
+
+
+expect('TrailingSpace',
+       'D204: 1 blank line required after class docstring (found 0)')
+expect('TrailingSpace',
+       'D211: No blank lines allowed before class docstring (found 1)')
+
+
+class TrailingSpace:
+
+    """TrailingSpace."""
+    pass
+
+
+expect('LeadingAndTrailingSpaceMissing',
+       'D203: 1 blank line required before class docstring (found 0)')
+expect('LeadingAndTrailingSpaceMissing',
+       'D204: 1 blank line required after class docstring (found 0)')
+
+
+class LeadingAndTrailingSpaceMissing:
+    """Leading and trailing space missing."""
+    pass
+
+
+@expect('D205: 1 blank line required between summary line and description '
+        '(found 0)')
+@expect('D213: Multi-line docstring summary should start at the second line')
+def multi_line_zero_separating_blanks():
+    """Summary.
+    Description.
+
+    """
+
+
+@expect('D205: 1 blank line required between summary line and description '
+        '(found 2)')
+@expect('D213: Multi-line docstring summary should start at the second line')
+def multi_line_two_separating_blanks():
+    """Summary.
+
+
+    Description.
+
+    """
+
+
+@expect('D213: Multi-line docstring summary should start at the second line')
+def multi_line_one_separating_blanks():
+    """Summary.
+
+    Description.
+
+    """
+
+
+@expect('D207: Docstring is under-indented')
+@expect('D213: Multi-line docstring summary should start at the second line')
+def asdfsdf():
+    """Summary.
+
+Description.
+
+    """
+
+
+@expect('D207: Docstring is under-indented')
+@expect('D213: Multi-line docstring summary should start at the second line')
+def asdsdfsdffsdf():
+    """Summary.
+
+    Description.
+
+"""
+
+
+@expect('D208: Docstring is over-indented')
+@expect('D213: Multi-line docstring summary should start at the second line')
+def asdfsdsdf24():
+    """Summary.
+
+       Description.
+
+    """
+
+
+@expect('D208: Docstring is over-indented')
+@expect('D213: Multi-line docstring summary should start at the second line')
+def asdfsdsdfsdf24():
+    """Summary.
+
+    Description.
+
+        """
+
+
+@expect('D208: Docstring is over-indented')
+@expect('D213: Multi-line docstring summary should start at the second line')
+def asdfsdfsdsdsdfsdf24():
+    """Summary.
+
+        Description.
+
+    """
+
+
+@expect('D209: Multi-line docstring closing quotes should be on a separate '
+        'line')
+@expect('D213: Multi-line docstring summary should start at the second line')
+def asdfljdf24():
+    """Summary.
+
+    Description."""
+
+
+@expect('D210: No whitespaces allowed surrounding docstring text')
+def endswith():
+    """Whitespace at the end. """
+
+
+@expect('D210: No whitespaces allowed surrounding docstring text')
+def around():
+    """ Whitespace at everywhere. """
+
+
+@expect('D210: No whitespaces allowed surrounding docstring text')
+@expect('D213: Multi-line docstring summary should start at the second line')
+def multiline():
+    """ Whitespace at the beginning.
+
+    This is the end.
+    """
+
+
+@expect('D300: Use """triple double quotes""" (found \'\'\'-quotes)')
+def triple_single_quotes_raw():
+    r'''Summary.'''
+
+
+@expect('D300: Use """triple double quotes""" (found \'\'\'-quotes)')
+def triple_single_quotes_raw_uppercase():
+    R'''Summary.'''
+
+
+@expect('D300: Use """triple double quotes""" (found \'-quotes)')
+def single_quotes_raw():
+    r'Summary.'
+
+
+@expect('D300: Use """triple double quotes""" (found \'-quotes)')
+def single_quotes_raw_uppercase():
+    R'Summary.'
+
+
+@expect('D300: Use """triple double quotes""" (found \'-quotes)')
+@expect('D301: Use r""" if any backslashes in a docstring')
+def single_quotes_raw_uppercase_backslash():
+    R'Sum\mary.'
+
+
+@expect('D301: Use r""" if any backslashes in a docstring')
+def double_quotes_backslash():
+    """Sum\\mary."""
+
+
+@expect('D301: Use r""" if any backslashes in a docstring')
+def double_quotes_backslash_uppercase():
+    R"""Sum\\mary."""
+
+
+@expect('D213: Multi-line docstring summary should start at the second line')
+def exceptions_of_D301():
+    """Exclude some backslashes from D301.
+
+    In particular, line continuations \
+    and unicode literals \u0394 and \N{GREEK CAPITAL LETTER DELTA}.
+    They are considered to be intentionally unescaped.
+    """
+
+
+@expect("D400: First line should end with a period (not 'y')")
+@expect("D415: First line should end with a period, question mark, "
+        "or exclamation point (not 'y')")
+def lwnlkjl():
+    """Summary"""
+
+
+@expect("D401: First line should be in imperative mood "
+        "(perhaps 'Return', not 'Returns')")
+def liouiwnlkjl():
+    """Returns foo."""
+
+
+@expect("D401: First line should be in imperative mood; try rephrasing "
+        "(found 'Constructor')")
+def sdgfsdg23245():
+    """Constructor for a foo."""
+
+
+@expect("D401: First line should be in imperative mood; try rephrasing "
+        "(found 'Constructor')")
+def sdgfsdg23245777():
+    """Constructor."""
+
+
+@expect('D402: First line should not be the function\'s "signature"')
+def foobar():
+    """Signature: foobar()."""
+
+
+@expect('D213: Multi-line docstring summary should start at the second line')
+def new_209():
+    """First line.
+
+    More lines.
+    """
+    pass
+
+
+@expect('D213: Multi-line docstring summary should start at the second line')
+def old_209():
+    """One liner.
+
+    Multi-line comments. OK to have extra blank line
+
+    """
+
+
+@expect("D103: Missing docstring in public function")
+def oneliner_d102(): return
+
+
+@expect("D400: First line should end with a period (not 'r')")
+@expect("D415: First line should end with a period, question mark,"
+        " or exclamation point (not 'r')")
+def oneliner_withdoc(): """One liner"""
+
+
+def ignored_decorator(func):   # noqa: D400,D401,D415
+    """Runs something"""
+    func()
+    pass
+
+
+def decorator_for_test(func):   # noqa: D400,D401,D415
+    """Runs something"""
+    func()
+    pass
+
+
+@ignored_decorator
+def oneliner_ignored_decorator(): """One liner"""
+
+
+@decorator_for_test
+@expect("D400: First line should end with a period (not 'r')")
+@expect("D415: First line should end with a period, question mark,"
+        " or exclamation point (not 'r')")
+def oneliner_with_decorator_expecting_errors(): """One liner"""
+
+
+@decorator_for_test
+def valid_oneliner_with_decorator(): """One liner."""
+
+
+@expect("D207: Docstring is under-indented")
+@expect('D213: Multi-line docstring summary should start at the second line')
+def docstring_start_in_same_line(): """First Line.
+
+    Second Line
+    """
+
+
+def function_with_lambda_arg(x=lambda y: y):
+    """Wrap the given lambda."""
+
+
+@expect('D213: Multi-line docstring summary should start at the second line')
+def a_following_valid_function(x=None):
+    """Check for a bug where the previous function caused an assertion.
+
+    The assertion was caused in the next function, so this one is necessary.
+
+    """
+
+
+def outer_function():
+    """Do something."""
+    def inner_function():
+        """Do inner something."""
+        return 0
+
+
+@expect("D400: First line should end with a period (not 'g')")
+@expect("D401: First line should be in imperative mood "
+        "(perhaps 'Run', not 'Runs')")
+@expect("D415: First line should end with a period, question mark, "
+        "or exclamation point (not 'g')")
+def docstring_bad():
+    """Runs something"""
+    pass
+
+
+def docstring_bad_ignore_all():  # noqa
+    """Runs something"""
+    pass
+
+
+def docstring_bad_ignore_one():  # noqa: D400,D401,D415
+    """Runs something"""
+    pass
+
+
+@expect("D401: First line should be in imperative mood "
+        "(perhaps 'Run', not 'Runs')")
+def docstring_ignore_some_violations_but_catch_D401():  # noqa: E501,D400,D415
+    """Runs something"""
+    pass
+
+
+@expect(
+    "D401: First line should be in imperative mood "
+    "(perhaps 'Initiate', not 'Initiates')"
+)
+def docstring_initiates():
+    """Initiates the process."""
+
+
+@expect(
+    "D401: First line should be in imperative mood "
+    "(perhaps 'Initialize', not 'Initializes')"
+)
+def docstring_initializes():
+    """Initializes the process."""
+
+
+@wraps(docstring_bad_ignore_one)
+def bad_decorated_function():
+    """Bad (E501) but decorated"""
+    pass
+
+
+def valid_google_string():  # noqa: D400
+    """Test a valid something!"""
+
+
+@expect("D415: First line should end with a period, question mark, "
+        "or exclamation point (not 'g')")
+def bad_google_string():  # noqa: D400
+    """Test a valid something"""
+
+
+# This is reproducing a bug where AttributeError is raised when parsing class
+# parameters as functions for Google / Numpy conventions.
+class Blah:  # noqa: D203,D213
+    """A Blah.
+
+    Parameters
+    ----------
+    x : int
+
+    """
+
+    def __init__(self, x):
+        pass
+
+
+expect(os.path.normcase(__file__ if __file__[-1] != 'c' else __file__[:-1]),
+       'D100: Missing docstring in public module')
--- a/resources/test/fixtures/F401_0.py
+++ b/resources/test/fixtures/F401_0.py
@@ -65,3 +65,24 @@ b = Union["Nut", None]
 c = cast("Vegetable", b)

 Field = lambda default=MISSING: field(default=default)
+
+
+# Test: access a sub-importation via an alias.
+import pyarrow as pa
+import pyarrow.csv
+
+print(pa.csv.read_csv("test.csv"))
+
+
+# Test: referencing an import via TypeAlias.
+import sys
+
+import numpy as np
+
+if sys.version_info >= (3, 10):
+    from typing import TypeAlias
+else:
+    from typing_extensions import TypeAlias
+
+
+CustomInt: TypeAlias = "np.int8 | np.int16"
--- a/resources/test/fixtures/F401_1.py
+++ b/resources/test/fixtures/F401_1.py
@@ -0,0 +1,5 @@
+"""Access a sub-importation via an alias."""
+import pyarrow as pa
+import pyarrow.csv
+
+print(pa.csv.read_csv("test.csv"))
--- a/resources/test/fixtures/F401_2.py
+++ b/resources/test/fixtures/F401_2.py
@@ -0,0 +1,12 @@
+"""Test: referencing an import via TypeAlias."""
+import sys
+
+import numpy as np
+
+if sys.version_info >= (3, 10):
+    from typing import TypeAlias
+else:
+    from typing_extensions import TypeAlias
+
+
+CustomInt: TypeAlias = "np.int8 | np.int16"
--- a/resources/test/fixtures/F401_3.py
+++ b/resources/test/fixtures/F401_3.py
@@ -0,0 +1,14 @@
+"""Test: referencing an import via TypeAlias (with future annotations)."""
+from __future__ import annotations
+
+import sys
+
+import numpy as np
+
+if sys.version_info >= (3, 10):
+    from typing import TypeAlias
+else:
+    from typing_extensions import TypeAlias
+
+
+CustomInt: TypeAlias = np.int8 | np.int16
--- a/resources/test/fixtures/F401_4.py
+++ b/resources/test/fixtures/F401_4.py
@@ -0,0 +1,14 @@
+"""Test: referencing an import via TypeAlias (with future annotations and quotes)."""
+from __future__ import annotations
+
+import sys
+
+import numpy as np
+
+if sys.version_info >= (3, 10):
+    from typing import TypeAlias
+else:
+    from typing_extensions import TypeAlias
+
+
+CustomInt: TypeAlias = "np.int8 | np.int16"
--- a/resources/test/fixtures/F404.py
+++ b/resources/test/fixtures/F404.py
@@ -1,4 +1,3 @@
-from __future__ import print_function
 """Docstring"""
 from __future__ import absolute_import

--- a/resources/test/fixtures/F821.py
+++ b/resources/test/fixtures/F821.py
@@ -89,3 +89,45 @@ A = (
    f'B'
    f'{B}'
 )
+
+
+from typing import Annotated, Literal
+
+
+def arbitrary_callable() -> None:
+    ...
+
+
+class PEP593Test:
+    field: Annotated[
+        int,
+        "base64",
+        arbitrary_callable(),
+        123,
+        (1, 2, 3),
+    ]
+    field_with_stringified_type: Annotated[
+        "PEP593Test",
+        123,
+    ]
+    field_with_undefined_stringified_type: Annotated[
+        "PEP593Test123",
+        123,
+    ]
+    field_with_nested_subscript: Annotated[
+        dict[Literal["foo"], str],
+        123,
+    ]
+    field_with_undefined_nested_subscript: Annotated[
+        dict["foo", "bar"],  # Expected to fail as undefined.
+        123,
+    ]
+
+
+def in_ipython_notebook() -> bool:
+    try:
+        # autoimported by notebooks
+        get_ipython()  # type: ignore[name-defined]
+    except NameError:
+        return False  # not in notebook
+    return True
--- a/resources/test/fixtures/M001.py
+++ b/resources/test/fixtures/M001.py
@@ -15,6 +15,9 @@ def f() -> None:
    # Invalid
    d = 1  # noqa: F841, E501

+    # Invalid (and unimplemented)
+    d = 1  # noqa: F841, W191
+

 # Valid
 _ = """Lorem ipsum dolor sit amet.
--- a/resources/test/fixtures/R002.py
+++ b/resources/test/fixtures/R002.py
@@ -1,3 +0,0 @@
-self.assertEquals (1, 2)
-self.assertEquals(1, 2)
-self.assertEqual(3, 4)
--- a/resources/test/fixtures/SPR001.py
+++ b/resources/test/fixtures/SPR001.py
@@ -1,22 +0,0 @@
-class Parent:
-    def method(self):
-        pass
-
-    def wrong(self):
-        pass
-
-
-class Child(Parent):
-    def method(self):
-        parent = super()  # ok
-        super().method()  # ok
-        Parent.method(self)  # ok
-        Parent.super(1, 2)  # ok
-
-    def wrong(self):
-        parent = super(Child, self)  # wrong
-        super(Child, self).method  # wrong
-        super(
-            Child,
-            self,
-        ).method()  # wrong
--- a/resources/test/fixtures/U001.py
+++ b/resources/test/fixtures/U001.py
@@ -0,0 +1,13 @@
+class A:
+    __metaclass__ = type
+
+
+class B:
+    __metaclass__ = type
+
+    def __init__(self) -> None:
+        pass
+
+
+class C(metaclass=type):
+    pass
--- a/resources/test/fixtures/U002.py
+++ b/resources/test/fixtures/U002.py
@@ -0,0 +1,15 @@
+from os.path import abspath
+
+x = abspath(__file__)
+
+
+import os
+
+
+y = os.path.abspath(__file__)
+
+
+from os import path
+
+
+z = path.abspath(__file__)
--- a/resources/test/fixtures/U003.py
+++ b/resources/test/fixtures/U003.py
@@ -0,0 +1,5 @@
+type('')
+type(b'')
+type(0)
+type(0.)
+type(0j)
--- a/resources/test/fixtures/U004.py
+++ b/resources/test/fixtures/U004.py
--- a/resources/test/fixtures/U005.py
+++ b/resources/test/fixtures/U005.py
@@ -0,0 +1,10 @@
+import unittest
+
+
+class Suite(unittest.TestCase):
+    def test(self) -> None:
+        self.assertEquals (1, 2)
+        self.assertEquals(1, 2)
+        self.assertEqual(3, 4)
+        self.failUnlessAlmostEqual(1, 1.1)
+        self.assertNotRegexpMatches("a", "b")
--- a/resources/test/fixtures/U006.py
+++ b/resources/test/fixtures/U006.py
@@ -0,0 +1,12 @@
+from typing import List
+
+
+def f(x: List[str]) -> None:
+    ...
+
+
+import typing
+
+
+def f(x: typing.List[str]) -> None:
+    ...
--- a/resources/test/fixtures/U007.py
+++ b/resources/test/fixtures/U007.py
@@ -0,0 +1,40 @@
+from typing import Optional
+
+
+def f(x: Optional[str]) -> None:
+    ...
+
+
+import typing
+
+
+def f(x: typing.Optional[str]) -> None:
+    ...
+
+
+from typing import Union
+
+
+def f(x: Union[str, int, Union[float, bytes]]) -> None:
+    ...
+
+
+import typing
+
+
+def f(x: typing.Union[str, int]) -> None:
+    ...
+
+
+from typing import Union
+
+
+def f(x: "Union[str, int, Union[float, bytes]]") -> None:
+    ...
+
+
+import typing
+
+
+def f(x: "typing.Union[str, int]") -> None:
+    ...
--- a/resources/test/fixtures/U008.py
+++ b/resources/test/fixtures/U008.py
@@ -0,0 +1,65 @@
+class Parent:
+    def method(self):
+        pass
+
+    def wrong(self):
+        pass
+
+
+class Child(Parent):
+    def method(self):
+        parent = super()  # ok
+        super().method()  # ok
+        Parent.method(self)  # ok
+        Parent.super(1, 2)  # ok
+
+    def wrong(self):
+        parent = super(Child, self)  # wrong
+        super(Child, self).method  # wrong
+        super(
+            Child,
+            self,
+        ).method()  # wrong
+
+
+class BaseClass:
+    def f(self):
+        print("f")
+
+
+def defined_outside(self):
+    super(MyClass, self).f()  # CANNOT use super()
+
+
+class MyClass(BaseClass):
+    def normal(self):
+        super(MyClass, self).f()  # can use super()
+        super().f()
+
+    def different_argument(self, other):
+        super(MyClass, other).f()  # CANNOT use super()
+
+    def comprehension_scope(self):
+        [super(MyClass, self).f() for x in [1]]  # CANNOT use super()
+
+    def inner_functions(self):
+        def outer_argument():
+            super(MyClass, self).f()  # CANNOT use super()
+
+        def inner_argument(self):
+            super(MyClass, self).f()  # can use super()
+            super().f()
+
+        outer_argument()
+        inner_argument(self)
+
+    def inner_class(self):
+        class InnerClass:
+            super(MyClass, self).f()  # CANNOT use super()
+
+            def method(inner_self):
+                super(MyClass, self).f()  # CANNOT use super()
+
+        InnerClass().method()
+
+    defined_outside = defined_outside
--- a/resources/test/fixtures/W292_0.py
+++ b/resources/test/fixtures/W292_0.py
@@ -0,0 +1,2 @@
+def fn() -> None:
+    pass
--- a/resources/test/fixtures/W292_1.py
+++ b/resources/test/fixtures/W292_1.py
@@ -0,0 +1,2 @@
+def fn() -> None:
+    pass  # noqa: W292
--- a/resources/test/fixtures/W292_2.py
+++ b/resources/test/fixtures/W292_2.py
@@ -0,0 +1,2 @@
+def fn() -> None:
+    pass
--- a/src/ast.rs
+++ b/src/ast.rs
@@ -1,4 +1,5 @@
-pub mod checks;
+pub mod checkers;
+pub mod helpers;
 pub mod operations;
 pub mod relocate;
 pub mod types;
--- a/src/ast/checkers.rs
+++ b/src/ast/checkers.rs
@@ -1,22 +1,23 @@
 use std::collections::BTreeSet;

 use itertools::izip;
+use num_bigint::BigInt;
 use regex::Regex;
 use rustpython_parser::ast::{
-    Arg, Arguments, Cmpop, Constant, Excepthandler, ExcepthandlerKind, Expr, ExprKind, Keyword,
-    Location, Stmt, StmtKind, Unaryop,
+    Arg, ArgData, Arguments, Cmpop, Constant, Excepthandler, ExcepthandlerKind, Expr, ExprKind,
+    KeywordData, Located, Stmt, StmtKind, Unaryop,
 };
+use serde::{Deserialize, Serialize};

-use crate::ast::operations::SourceCodeLocator;
+use crate::ast::helpers;
 use crate::ast::types::{
    Binding, BindingKind, CheckLocator, FunctionScope, Range, Scope, ScopeKind,
 };
-use crate::autofix::{fixer, fixes};
-use crate::checks::{Check, CheckKind, Fix, RejectedCmpop};
+use crate::checks::{Check, CheckKind, RejectedCmpop};
 use crate::python::builtins::BUILTINS;

 /// Check IfTuple compliance.
-pub fn check_if_tuple(test: &Expr, location: Range) -> Option<Check> {
+pub fn if_tuple(test: &Expr, location: Range) -> Option<Check> {
    if let ExprKind::Tuple { elts, .. } = &test.node {
        if !elts.is_empty() {
            return Some(Check::new(CheckKind::IfTuple, location));
@@ -26,7 +27,7 @@ pub fn check_if_tuple(test: &Expr, location: Range) -> Option<Check> {
 }

 /// Check AssertTuple compliance.
-pub fn check_assert_tuple(test: &Expr, location: Range) -> Option<Check> {
+pub fn assert_tuple(test: &Expr, location: Range) -> Option<Check> {
    if let ExprKind::Tuple { elts, .. } = &test.node {
        if !elts.is_empty() {
            return Some(Check::new(CheckKind::AssertTuple, location));
@@ -36,7 +37,7 @@ pub fn check_assert_tuple(test: &Expr, location: Range) -> Option<Check> {
 }

 /// Check NotInTest and NotIsTest compliance.
-pub fn check_not_tests(
+pub fn not_tests(
    op: &Unaryop,
    operand: &Expr,
    check_not_in: bool,
@@ -75,7 +76,7 @@ pub fn check_not_tests(
 }

 /// Check UnusedVariable compliance.
-pub fn check_unused_variables(
+pub fn unused_variables(
    scope: &Scope,
    locator: &dyn CheckLocator,
    dummy_variable_rgx: &Regex,
@@ -108,7 +109,7 @@ pub fn check_unused_variables(
 }

 /// Check DoNotAssignLambda compliance.
-pub fn check_do_not_assign_lambda(value: &Expr, location: Range) -> Option<Check> {
+pub fn do_not_assign_lambda(value: &Expr, location: Range) -> Option<Check> {
    if let ExprKind::Lambda { .. } = &value.node {
        Some(Check::new(CheckKind::DoNotAssignLambda, location))
    } else {
@@ -116,12 +117,108 @@ pub fn check_do_not_assign_lambda(value: &Expr, location: Range) -> Option<Check
    }
 }

+/// Check UselessMetaclassType compliance.
+pub fn useless_metaclass_type(targets: &Vec<Expr>, value: &Expr, location: Range) -> Option<Check> {
+    if targets.len() == 1 {
+        if let ExprKind::Name { id, .. } = targets.first().map(|expr| &expr.node).unwrap() {
+            if id == "__metaclass__" {
+                if let ExprKind::Name { id, .. } = &value.node {
+                    if id == "type" {
+                        return Some(Check::new(CheckKind::UselessMetaclassType, location));
+                    }
+                }
+            }
+        }
+    }
+    None
+}
+
+/// Check UnnecessaryAbspath compliance.
+pub fn unnecessary_abspath(func: &Expr, args: &Vec<Expr>, location: Range) -> Option<Check> {
+    // Validate the arguments.
+    if args.len() == 1 {
+        if let ExprKind::Name { id, .. } = &args[0].node {
+            if id == "__file__" {
+                match &func.node {
+                    ExprKind::Attribute { attr: id, .. } | ExprKind::Name { id, .. } => {
+                        if id == "abspath" {
+                            return Some(Check::new(CheckKind::UnnecessaryAbspath, location));
+                        }
+                    }
+                    _ => {}
+                }
+            }
+        }
+    }
+
+    None
+}
+
+#[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
+pub enum Primitive {
+    Bool,
+    Str,
+    Bytes,
+    Int,
+    Float,
+    Complex,
+}
+
+impl Primitive {
+    fn from_constant(constant: &Constant) -> Option<Self> {
+        match constant {
+            Constant::Bool(_) => Some(Primitive::Bool),
+            Constant::Str(_) => Some(Primitive::Str),
+            Constant::Bytes(_) => Some(Primitive::Bytes),
+            Constant::Int(_) => Some(Primitive::Int),
+            Constant::Float(_) => Some(Primitive::Float),
+            Constant::Complex { .. } => Some(Primitive::Complex),
+            _ => None,
+        }
+    }
+
+    pub fn builtin(&self) -> String {
+        match self {
+            Primitive::Bool => "bool".to_string(),
+            Primitive::Str => "str".to_string(),
+            Primitive::Bytes => "bytes".to_string(),
+            Primitive::Int => "int".to_string(),
+            Primitive::Float => "float".to_string(),
+            Primitive::Complex => "complex".to_string(),
+        }
+    }
+}
+
+/// Check TypeOfPrimitive compliance.
+pub fn type_of_primitive(func: &Expr, args: &Vec<Expr>, location: Range) -> Option<Check> {
+    // Validate the arguments.
+    if args.len() == 1 {
+        match &func.node {
+            ExprKind::Attribute { attr: id, .. } | ExprKind::Name { id, .. } => {
+                if id == "type" {
+                    if let ExprKind::Constant { value, .. } = &args[0].node {
+                        if let Some(primitive) = Primitive::from_constant(value) {
+                            return Some(Check::new(
+                                CheckKind::TypeOfPrimitive(primitive),
+                                location,
+                            ));
+                        }
+                    }
+                }
+            }
+            _ => {}
+        }
+    }
+
+    None
+}
+
 fn is_ambiguous_name(name: &str) -> bool {
    name == "l" || name == "I" || name == "O"
 }

 /// Check AmbiguousVariableName compliance.
-pub fn check_ambiguous_variable_name(name: &str, location: Range) -> Option<Check> {
+pub fn ambiguous_variable_name(name: &str, location: Range) -> Option<Check> {
    if is_ambiguous_name(name) {
        Some(Check::new(
            CheckKind::AmbiguousVariableName(name.to_string()),
@@ -133,7 +230,7 @@ pub fn check_ambiguous_variable_name(name: &str, location: Range) -> Option<Chec
 }

 /// Check AmbiguousClassName compliance.
-pub fn check_ambiguous_class_name(name: &str, location: Range) -> Option<Check> {
+pub fn ambiguous_class_name(name: &str, location: Range) -> Option<Check> {
    if is_ambiguous_name(name) {
        Some(Check::new(
            CheckKind::AmbiguousClassName(name.to_string()),
@@ -145,7 +242,7 @@ pub fn check_ambiguous_class_name(name: &str, location: Range) -> Option<Check>
 }

 /// Check AmbiguousFunctionName compliance.
-pub fn check_ambiguous_function_name(name: &str, location: Range) -> Option<Check> {
+pub fn ambiguous_function_name(name: &str, location: Range) -> Option<Check> {
    if is_ambiguous_name(name) {
        Some(Check::new(
            CheckKind::AmbiguousFunctionName(name.to_string()),
@@ -157,15 +254,7 @@ pub fn check_ambiguous_function_name(name: &str, location: Range) -> Option<Chec
 }

 /// Check UselessObjectInheritance compliance.
-pub fn check_useless_object_inheritance(
-    stmt: &Stmt,
-    name: &str,
-    bases: &[Expr],
-    keywords: &[Keyword],
-    scope: &Scope,
-    locator: &mut SourceCodeLocator,
-    autofix: &fixer::Mode,
-) -> Option<Check> {
+pub fn useless_object_inheritance(name: &str, bases: &[Expr], scope: &Scope) -> Option<Check> {
    for expr in bases {
        if let ExprKind::Name { id, .. } = &expr.node {
            if id == "object" {
@@ -175,22 +264,10 @@ pub fn check_useless_object_inheritance(
                        kind: BindingKind::Builtin,
                        ..
                    }) => {
-                        let mut check = Check::new(
+                        return Some(Check::new(
                            CheckKind::UselessObjectInheritance(name.to_string()),
                            Range::from_located(expr),
-                        );
-                        if matches!(autofix, fixer::Mode::Generate | fixer::Mode::Apply) {
-                            if let Some(fix) = fixes::remove_class_def_base(
-                                locator,
-                                &stmt.location,
-                                expr.location,
-                                bases,
-                                keywords,
-                            ) {
-                                check.amend(fix);
-                            }
-                        }
-                        return Some(check);
+                        ));
                    }
                    _ => {}
                }
@@ -202,7 +279,7 @@ pub fn check_useless_object_inheritance(
 }

 /// Check DefaultExceptNotLast compliance.
-pub fn check_default_except_not_last(handlers: &Vec<Excepthandler>) -> Option<Check> {
+pub fn default_except_not_last(handlers: &Vec<Excepthandler>) -> Option<Check> {
    for (idx, handler) in handlers.iter().enumerate() {
        let ExcepthandlerKind::ExceptHandler { type_, .. } = &handler.node;
        if type_.is_none() && idx < handlers.len() - 1 {
@@ -217,7 +294,7 @@ pub fn check_default_except_not_last(handlers: &Vec<Excepthandler>) -> Option<Ch
 }

 /// Check RaiseNotImplemented compliance.
-pub fn check_raise_not_implemented(expr: &Expr) -> Option<Check> {
+pub fn raise_not_implemented(expr: &Expr) -> Option<Check> {
    match &expr.node {
        ExprKind::Call { func, .. } => {
            if let ExprKind::Name { id, .. } = &func.node {
@@ -244,7 +321,7 @@ pub fn check_raise_not_implemented(expr: &Expr) -> Option<Check> {
 }

 /// Check DuplicateArgumentName compliance.
-pub fn check_duplicate_arguments(arguments: &Arguments) -> Vec<Check> {
+pub fn duplicate_arguments(arguments: &Arguments) -> Vec<Check> {
    let mut checks: Vec<Check> = vec![];

    // Collect all the arguments into a single vector.
@@ -277,36 +354,6 @@ pub fn check_duplicate_arguments(arguments: &Arguments) -> Vec<Check> {
    checks
 }

-/// Check AssertEquals compliance.
-pub fn check_assert_equals(expr: &Expr, autofix: &fixer::Mode) -> Option<Check> {
-    if let ExprKind::Attribute { value, attr, .. } = &expr.node {
-        if attr == "assertEquals" {
-            if let ExprKind::Name { id, .. } = &value.node {
-                if id == "self" {
-                    let mut check =
-                        Check::new(CheckKind::NoAssertEquals, Range::from_located(expr));
-                    if matches!(autofix, fixer::Mode::Generate | fixer::Mode::Apply) {
-                        check.amend(Fix {
-                            content: "assertEqual".to_string(),
-                            location: Location::new(
-                                expr.location.row(),
-                                expr.location.column() + 1,
-                            ),
-                            end_location: Location::new(
-                                expr.location.row(),
-                                expr.location.column() + 1 + "assertEquals".len(),
-                            ),
-                            applied: false,
-                        });
-                    }
-                    return Some(check);
-                }
-            }
-        }
-    }
-    None
-}
-
 #[derive(Debug, PartialEq)]
 enum DictionaryKey<'a> {
    Constant(&'a Constant),
@@ -322,7 +369,7 @@ fn convert_to_value(expr: &Expr) -> Option<DictionaryKey> {
 }

 /// Check MultiValueRepeatedKeyLiteral and MultiValueRepeatedKeyVariable compliance.
-pub fn check_repeated_keys(
+pub fn repeated_keys(
    keys: &Vec<Expr>,
    check_repeated_literals: bool,
    check_repeated_variables: bool,
@@ -362,7 +409,7 @@ pub fn check_repeated_keys(
 }

 /// Check TrueFalseComparison and NoneComparison compliance.
-pub fn check_literal_comparisons(
+pub fn literal_comparisons(
    left: &Expr,
    ops: &Vec<Cmpop>,
    comparators: &Vec<Expr>,
@@ -493,7 +540,7 @@ fn is_constant_non_singleton(expr: &Expr) -> bool {
 }

 /// Check IsLiteral compliance.
-pub fn check_is_literal(
+pub fn is_literal(
    left: &Expr,
    ops: &Vec<Cmpop>,
    comparators: &Vec<Expr>,
@@ -515,11 +562,7 @@ pub fn check_is_literal(
 }

 /// Check TypeComparison compliance.
-pub fn check_type_comparison(
-    ops: &Vec<Cmpop>,
-    comparators: &Vec<Expr>,
-    location: Range,
-) -> Vec<Check> {
+pub fn type_comparison(ops: &Vec<Cmpop>, comparators: &Vec<Expr>, location: Range) -> Vec<Check> {
    let mut checks: Vec<Check> = vec![];

    for (op, right) in izip!(ops, comparators) {
@@ -555,7 +598,7 @@ pub fn check_type_comparison(
 }

 /// Check TwoStarredExpressions and TooManyExpressionsInStarredAssignment compliance.
-pub fn check_starred_expressions(
+pub fn starred_expressions(
    elts: &[Expr],
    check_too_many_expressions: bool,
    check_two_starred_expressions: bool,
@@ -576,10 +619,7 @@ pub fn check_starred_expressions(
    if check_too_many_expressions {
        if let Some(starred_index) = starred_index {
            if starred_index >= 1 << 8 || elts.len() - starred_index > 1 << 24 {
-                return Some(Check::new(
-                    CheckKind::TooManyExpressionsInStarredAssignment,
-                    location,
-                ));
+                return Some(Check::new(CheckKind::ExpressionsInStarAssignment, location));
            }
        }
    }
@@ -588,7 +628,7 @@ pub fn check_starred_expressions(
 }

 /// Check BreakOutsideLoop compliance.
-pub fn check_break_outside_loop(
+pub fn break_outside_loop(
    stmt: &Stmt,
    parents: &[&Stmt],
    parent_stack: &[usize],
@@ -629,7 +669,7 @@ pub fn check_break_outside_loop(
 }

 /// Check ContinueOutsideLoop compliance.
-pub fn check_continue_outside_loop(
+pub fn continue_outside_loop(
    stmt: &Stmt,
    parents: &[&Stmt],
    parent_stack: &[usize],
@@ -677,11 +717,7 @@ pub enum ShadowingType {
 }

 /// Check builtin name shadowing
-pub fn check_builtin_shadowing(
-    name: &str,
-    location: Range,
-    node_type: ShadowingType,
-) -> Option<Check> {
+pub fn builtin_shadowing(name: &str, location: Range, node_type: ShadowingType) -> Option<Check> {
    if BUILTINS.contains(&name) {
        Some(Check::new(
            match node_type {
@@ -696,39 +732,394 @@ pub fn check_builtin_shadowing(
    }
 }

-// flake8-super
-/// Check that `super()` has no args
-pub fn check_super_args(
-    expr: &Expr,
-    func: &Expr,
-    args: &Vec<Expr>,
-    locator: &mut SourceCodeLocator,
-    autofix: &fixer::Mode,
-) -> Option<Check> {
-    if let ExprKind::Name { id, .. } = &func.node {
-        if id == "super" && !args.is_empty() {
-            let mut check = Check::new(
-                CheckKind::SuperCallWithParameters,
-                Range::from_located(expr),
-            );
-            if matches!(autofix, fixer::Mode::Generate | fixer::Mode::Apply) {
-                if let Some(fix) = fixes::remove_super_arguments(locator, expr) {
-                    check.amend(fix);
+// flake8-comprehensions
+/// Check `list(generator)` compliance.
+pub fn unnecessary_generator_list(expr: &Expr, func: &Expr, args: &Vec<Expr>) -> Option<Check> {
+    if args.len() == 1 {
+        if let ExprKind::Name { id, .. } = &func.node {
+            if id == "list" {
+                if let ExprKind::GeneratorExp { .. } = &args[0].node {
+                    return Some(Check::new(
+                        CheckKind::UnnecessaryGeneratorList,
+                        Range::from_located(expr),
+                    ));
                }
            }
-            return Some(check);
        }
    }
    None
 }

+/// Check `set(generator)` compliance.
+pub fn unnecessary_generator_set(expr: &Expr, func: &Expr, args: &Vec<Expr>) -> Option<Check> {
+    if args.len() == 1 {
+        if let ExprKind::Name { id, .. } = &func.node {
+            if id == "set" {
+                if let ExprKind::GeneratorExp { .. } = &args[0].node {
+                    return Some(Check::new(
+                        CheckKind::UnnecessaryGeneratorList,
+                        Range::from_located(expr),
+                    ));
+                }
+            }
+        }
+    }
+    None
+}
+
+/// Check `dict((x, y) for x, y in iterable)` compliance.
+pub fn unnecessary_generator_dict(expr: &Expr, func: &Expr, args: &Vec<Expr>) -> Option<Check> {
+    if args.len() == 1 {
+        if let ExprKind::Name { id, .. } = &func.node {
+            if id == "dict" {
+                if let ExprKind::GeneratorExp { elt, .. } = &args[0].node {
+                    match &elt.node {
+                        ExprKind::Tuple { elts, .. } if elts.len() == 2 => {
+                            return Some(Check::new(
+                                CheckKind::UnnecessaryListComprehensionDict,
+                                Range::from_located(expr),
+                            ));
+                        }
+                        _ => {}
+                    }
+                }
+            }
+        }
+    }
+    None
+}
+
+/// Check `set([...])` compliance.
+pub fn unnecessary_list_comprehension_set(
+    expr: &Expr,
+    func: &Expr,
+    args: &Vec<Expr>,
+) -> Option<Check> {
+    if args.len() == 1 {
+        if let ExprKind::Name { id, .. } = &func.node {
+            if id == "set" {
+                if let ExprKind::ListComp { .. } = &args[0].node {
+                    return Some(Check::new(
+                        CheckKind::UnnecessaryListComprehensionSet,
+                        Range::from_located(expr),
+                    ));
+                }
+            }
+        }
+    }
+    None
+}
+
+/// Check `dict([...])` compliance.
+pub fn unnecessary_list_comprehension_dict(
+    expr: &Expr,
+    func: &Expr,
+    args: &Vec<Expr>,
+) -> Option<Check> {
+    if args.len() == 1 {
+        if let ExprKind::Name { id, .. } = &func.node {
+            if id == "dict" {
+                if let ExprKind::ListComp { elt, .. } = &args[0].node {
+                    match &elt.node {
+                        ExprKind::Tuple { elts, .. } if elts.len() == 2 => {
+                            return Some(Check::new(
+                                CheckKind::UnnecessaryListComprehensionDict,
+                                Range::from_located(expr),
+                            ));
+                        }
+                        _ => {}
+                    }
+                }
+            }
+        }
+    }
+    None
+}
+
+/// Check `set([1, 2])` compliance.
+pub fn unnecessary_literal_set(expr: &Expr, func: &Expr, args: &Vec<Expr>) -> Option<Check> {
+    if args.len() == 1 {
+        if let ExprKind::Name { id, .. } = &func.node {
+            if id == "set" {
+                match &args[0].node {
+                    ExprKind::List { .. } => {
+                        return Some(Check::new(
+                            CheckKind::UnnecessaryLiteralSet("list".to_string()),
+                            Range::from_located(expr),
+                        ));
+                    }
+                    ExprKind::Tuple { .. } => {
+                        return Some(Check::new(
+                            CheckKind::UnnecessaryLiteralSet("tuple".to_string()),
+                            Range::from_located(expr),
+                        ));
+                    }
+                    _ => {}
+                }
+            }
+        }
+    }
+    None
+}
+
+/// Check `dict([(1, 2)])` compliance.
+pub fn unnecessary_literal_dict(expr: &Expr, func: &Expr, args: &Vec<Expr>) -> Option<Check> {
+    if args.len() == 1 {
+        if let ExprKind::Name { id, .. } = &func.node {
+            if id == "dict" {
+                match &args[0].node {
+                    ExprKind::Tuple { elts, .. } => {
+                        if let Some(elt) = elts.first() {
+                            match &elt.node {
+                                // dict((1, 2), ...))
+                                ExprKind::Tuple { elts, .. } if elts.len() == 2 => {
+                                    return Some(Check::new(
+                                        CheckKind::UnnecessaryLiteralDict("tuple".to_string()),
+                                        Range::from_located(expr),
+                                    ));
+                                }
+                                _ => {}
+                            }
+                        } else {
+                            // dict(())
+                            return Some(Check::new(
+                                CheckKind::UnnecessaryLiteralDict("tuple".to_string()),
+                                Range::from_located(expr),
+                            ));
+                        }
+                    }
+                    ExprKind::List { elts, .. } => {
+                        if let Some(elt) = elts.first() {
+                            match &elt.node {
+                                // dict([(1, 2), ...])
+                                ExprKind::Tuple { elts, .. } if elts.len() == 2 => {
+                                    return Some(Check::new(
+                                        CheckKind::UnnecessaryLiteralDict("list".to_string()),
+                                        Range::from_located(expr),
+                                    ));
+                                }
+                                _ => {}
+                            }
+                        } else {
+                            // dict([])
+                            return Some(Check::new(
+                                CheckKind::UnnecessaryLiteralDict("list".to_string()),
+                                Range::from_located(expr),
+                            ));
+                        }
+                    }
+                    _ => {}
+                }
+            }
+        }
+    }
+    None
+}
+
+pub fn unnecessary_collection_call(
+    expr: &Expr,
+    func: &Expr,
+    args: &Vec<Expr>,
+    keywords: &Vec<Located<KeywordData>>,
+) -> Option<Check> {
+    if args.is_empty() {
+        if let ExprKind::Name { id, .. } = &func.node {
+            if id == "list" || id == "tuple" {
+                // list() or tuple()
+                return Some(Check::new(
+                    CheckKind::UnnecessaryCollectionCall(id.to_string()),
+                    Range::from_located(expr),
+                ));
+            } else if id == "dict" {
+                // dict() or dict(a=1)
+                if keywords.is_empty() || keywords.iter().all(|kw| kw.node.arg.is_some()) {
+                    return Some(Check::new(
+                        CheckKind::UnnecessaryCollectionCall(id.to_string()),
+                        Range::from_located(expr),
+                    ));
+                }
+            }
+        }
+    }
+    None
+}
+
+pub fn unnecessary_literal_within_tuple_call(
+    expr: &Expr,
+    func: &Expr,
+    args: &[Expr],
+) -> Option<Check> {
+    if let ExprKind::Name { id, .. } = &func.node {
+        if id == "tuple" {
+            if let Some(arg) = args.first() {
+                match &arg.node {
+                    ExprKind::Tuple { .. } => {
+                        return Some(Check::new(
+                            CheckKind::UnnecessaryLiteralWithinTupleCall("tuple".to_string()),
+                            Range::from_located(expr),
+                        ));
+                    }
+                    ExprKind::List { .. } => {
+                        return Some(Check::new(
+                            CheckKind::UnnecessaryLiteralWithinTupleCall("list".to_string()),
+                            Range::from_located(expr),
+                        ));
+                    }
+                    _ => {}
+                }
+            }
+        }
+    }
+
+    None
+}
+
+pub fn unnecessary_literal_within_list_call(
+    expr: &Expr,
+    func: &Expr,
+    args: &[Expr],
+) -> Option<Check> {
+    if let ExprKind::Name { id, .. } = &func.node {
+        if id == "list" {
+            if let Some(arg) = args.first() {
+                match &arg.node {
+                    ExprKind::Tuple { .. } => {
+                        return Some(Check::new(
+                            CheckKind::UnnecessaryLiteralWithinListCall("tuple".to_string()),
+                            Range::from_located(expr),
+                        ));
+                    }
+                    ExprKind::List { .. } => {
+                        return Some(Check::new(
+                            CheckKind::UnnecessaryLiteralWithinListCall("list".to_string()),
+                            Range::from_located(expr),
+                        ));
+                    }
+                    _ => {}
+                }
+            }
+        }
+    }
+
+    None
+}
+
+pub fn unnecessary_subscript_reversal(expr: &Expr, func: &Expr, args: &[Expr]) -> Option<Check> {
+    if let Some(first_arg) = args.first() {
+        if let ExprKind::Name { id, .. } = &func.node {
+            if id == "set" || id == "sorted" || id == "reversed" {
+                if let ExprKind::Subscript { slice, .. } = &first_arg.node {
+                    if let ExprKind::Slice { lower, upper, step } = &slice.node {
+                        if lower.is_none() && upper.is_none() {
+                            if let Some(step) = step {
+                                if let ExprKind::UnaryOp {
+                                    op: Unaryop::USub,
+                                    operand,
+                                } = &step.node
+                                {
+                                    if let ExprKind::Constant {
+                                        value: Constant::Int(val),
+                                        ..
+                                    } = &operand.node
+                                    {
+                                        if *val == BigInt::from(1) {
+                                            return Some(Check::new(
+                                                CheckKind::UnnecessarySubscriptReversal(
+                                                    id.to_string(),
+                                                ),
+                                                Range::from_located(expr),
+                                            ));
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+    None
+}
+
+// flake8-super
+/// Check that `super()` has no args
+pub fn super_args(
+    scope: &Scope,
+    parents: &[&Stmt],
+    expr: &Expr,
+    func: &Expr,
+    args: &Vec<Expr>,
+) -> Option<Check> {
+    if !helpers::is_super_call_with_arguments(func, args) {
+        return None;
+    }
+
+    // Check: are we in a Function scope?
+    if !matches!(scope.kind, ScopeKind::Function { .. }) {
+        return None;
+    }
+
+    let mut parents = parents.iter().rev();
+
+    // For a `super` invocation to be unnecessary, the first argument needs to match the enclosing
+    // class, and the second argument needs to match the first argument to the enclosing function.
+    if let [first_arg, second_arg] = args.as_slice() {
+        // Find the enclosing function definition (if any).
+        if let Some(StmtKind::FunctionDef {
+            args: parent_args, ..
+        }) = parents
+            .find(|stmt| matches!(stmt.node, StmtKind::FunctionDef { .. }))
+            .map(|stmt| &stmt.node)
+        {
+            // Extract the name of the first argument to the enclosing function.
+            if let Some(ArgData {
+                arg: parent_arg, ..
+            }) = parent_args.args.first().map(|expr| &expr.node)
+            {
+                // Find the enclosing class definition (if any).
+                if let Some(StmtKind::ClassDef {
+                    name: parent_name, ..
+                }) = parents
+                    .find(|stmt| matches!(stmt.node, StmtKind::ClassDef { .. }))
+                    .map(|stmt| &stmt.node)
+                {
+                    if let (
+                        ExprKind::Name {
+                            id: first_arg_id, ..
+                        },
+                        ExprKind::Name {
+                            id: second_arg_id, ..
+                        },
+                    ) = (&first_arg.node, &second_arg.node)
+                    {
+                        if first_arg_id == parent_name && second_arg_id == parent_arg {
+                            return Some(Check::new(
+                                CheckKind::SuperCallWithParameters,
+                                Range::from_located(expr),
+                            ));
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    None
+}
+
 // flake8-print
 /// Check whether a function call is a `print` or `pprint` invocation
-pub fn check_print_call(expr: &Expr, func: &Expr) -> Option<Check> {
+pub fn print_call(
+    expr: &Expr,
+    func: &Expr,
+    check_print: bool,
+    check_pprint: bool,
+) -> Option<Check> {
    if let ExprKind::Name { id, .. } = &func.node {
-        if id == "print" {
+        if check_print && id == "print" {
            return Some(Check::new(CheckKind::PrintFound, Range::from_located(expr)));
-        } else if id == "pprint" {
+        } else if check_pprint && id == "pprint" {
            return Some(Check::new(
                CheckKind::PPrintFound,
                Range::from_located(expr),
@@ -738,7 +1129,7 @@ pub fn check_print_call(expr: &Expr, func: &Expr) -> Option<Check> {

    if let ExprKind::Attribute { value, attr, .. } = &func.node {
        if let ExprKind::Name { id, .. } = &value.node {
-            if id == "pprint" && attr == "pprint" {
+            if check_pprint && id == "pprint" && attr == "pprint" {
                return Some(Check::new(
                    CheckKind::PPrintFound,
                    Range::from_located(expr),
--- a/src/ast/helpers.rs
+++ b/src/ast/helpers.rs
@@ -0,0 +1,133 @@
+use once_cell::sync::Lazy;
+use regex::Regex;
+use rustpython_ast::{Excepthandler, ExcepthandlerKind, Expr, ExprKind, StmtKind};
+
+use crate::python::typing;
+
+fn compose_call_path_inner<'a>(expr: &'a Expr, parts: &mut Vec<&'a str>) {
+    match &expr.node {
+        ExprKind::Call { func, .. } => {
+            compose_call_path_inner(func, parts);
+        }
+        ExprKind::Attribute { value, attr, .. } => {
+            compose_call_path_inner(value, parts);
+            parts.push(attr);
+        }
+        ExprKind::Name { id, .. } => {
+            parts.push(id);
+        }
+        _ => {}
+    }
+}
+
+pub fn compose_call_path(expr: &Expr) -> Option<String> {
+    let mut segments = vec![];
+    compose_call_path_inner(expr, &mut segments);
+    if segments.is_empty() {
+        None
+    } else {
+        Some(segments.join("."))
+    }
+}
+
+pub fn match_name_or_attr(expr: &Expr, target: &str) -> bool {
+    match &expr.node {
+        ExprKind::Attribute { attr, .. } => target == attr,
+        ExprKind::Name { id, .. } => target == id,
+        _ => false,
+    }
+}
+
+pub enum SubscriptKind {
+    AnnotatedSubscript,
+    PEP593AnnotatedSubscript,
+}
+
+pub fn match_annotated_subscript(expr: &Expr) -> Option<SubscriptKind> {
+    match &expr.node {
+        ExprKind::Attribute { attr, .. } => {
+            if typing::is_annotated_subscript(attr) {
+                Some(SubscriptKind::AnnotatedSubscript)
+            } else if typing::is_pep593_annotated_subscript(attr) {
+                Some(SubscriptKind::PEP593AnnotatedSubscript)
+            } else {
+                None
+            }
+        }
+        ExprKind::Name { id, .. } => {
+            if typing::is_annotated_subscript(id) {
+                Some(SubscriptKind::AnnotatedSubscript)
+            } else if typing::is_pep593_annotated_subscript(id) {
+                Some(SubscriptKind::PEP593AnnotatedSubscript)
+            } else {
+                None
+            }
+        }
+        _ => None,
+    }
+}
+
+static DUNDER_REGEX: Lazy<Regex> = Lazy::new(|| Regex::new(r"__[^\s]+__").unwrap());
+
+pub fn is_assignment_to_a_dunder(node: &StmtKind) -> bool {
+    // Check whether it's an assignment to a dunder, with or without a type annotation.
+    // This is what pycodestyle (as of 2.9.1) does.
+    match node {
+        StmtKind::Assign {
+            targets,
+            value: _,
+            type_comment: _,
+        } => {
+            if targets.len() != 1 {
+                return false;
+            }
+            match &targets[0].node {
+                ExprKind::Name { id, ctx: _ } => DUNDER_REGEX.is_match(id),
+                _ => false,
+            }
+        }
+        StmtKind::AnnAssign {
+            target,
+            annotation: _,
+            value: _,
+            simple: _,
+        } => match &target.node {
+            ExprKind::Name { id, ctx: _ } => DUNDER_REGEX.is_match(id),
+            _ => false,
+        },
+        _ => false,
+    }
+}
+
+/// Extract the names of all handled exceptions.
+pub fn extract_handler_names(handlers: &[Excepthandler]) -> Vec<String> {
+    let mut handler_names = vec![];
+    for handler in handlers {
+        match &handler.node {
+            ExcepthandlerKind::ExceptHandler { type_, .. } => {
+                if let Some(type_) = type_ {
+                    if let ExprKind::Tuple { elts, .. } = &type_.node {
+                        for type_ in elts {
+                            if let Some(name) = compose_call_path(type_) {
+                                handler_names.push(name);
+                            }
+                        }
+                    } else if let Some(name) = compose_call_path(type_) {
+                        handler_names.push(name);
+                    }
+                }
+            }
+        }
+    }
+    handler_names
+}
+
+/// Returns `true` if a call is an argumented `super` invocation.
+pub fn is_super_call_with_arguments(func: &Expr, args: &Vec<Expr>) -> bool {
+    // Check: is this a `super` call?
+    if let ExprKind::Name { id, .. } = &func.node {
+        id == "super" && !args.is_empty()
+    } else {
+        false
+    }
+}
--- a/src/ast/types.rs
+++ b/src/ast/types.rs
@@ -74,9 +74,9 @@ pub enum BindingKind {
    Export(Vec<String>),
    FutureImportation,
    StarImportation,
-    Importation(String, BindingContext),
-    FromImportation(String, BindingContext),
-    SubmoduleImportation(String, BindingContext),
+    Importation(String, String, BindingContext),
+    FromImportation(String, String, BindingContext),
+    SubmoduleImportation(String, String, BindingContext),
 }

 #[derive(Clone, Debug)]
--- a/src/ast/visitor.rs
+++ b/src/ast/visitor.rs
@@ -4,6 +4,8 @@ use rustpython_parser::ast::{
    PatternKind, Stmt, StmtKind, Unaryop, Withitem,
 };

+use crate::ast::helpers::match_name_or_attr;
+
 pub trait Visitor<'a> {
    fn visit_stmt(&mut self, stmt: &'a Stmt) {
        walk_stmt(self, stmt);
@@ -148,7 +150,11 @@ pub fn walk_stmt<'a, V: Visitor<'a> + ?Sized>(visitor: &mut V, stmt: &'a Stmt) {
        } => {
            visitor.visit_annotation(annotation);
            if let Some(expr) = value {
-                visitor.visit_expr(expr);
+                if match_name_or_attr(annotation, "TypeAlias") {
+                    visitor.visit_annotation(expr);
+                } else {
+                    visitor.visit_expr(expr);
+                }
            }
            visitor.visit_expr(target);
        }
--- a/src/check_ast.rs
+++ b/src/check_ast.rs
--- a/src/check_lines.rs
+++ b/src/check_lines.rs
@@ -1,8 +1,8 @@
 use std::collections::BTreeMap;

-use crate::ast::types::Range;
 use rustpython_parser::ast::Location;

+use crate::ast::types::Range;
 use crate::autofix::fixer;
 use crate::checks::{Check, CheckCode, CheckKind, Fix};
 use crate::noqa;
@@ -32,8 +32,8 @@ pub fn check_lines(
    settings: &Settings,
    autofix: &fixer::Mode,
 ) {
-    let enforce_line_too_long = settings.select.contains(&CheckCode::E501);
-    let enforce_noqa = settings.select.contains(&CheckCode::M001);
+    let enforce_line_too_long = settings.enabled.contains(&CheckCode::E501);
+    let enforce_noqa = settings.enabled.contains(&CheckCode::M001);

    let mut noqa_directives: BTreeMap<usize, (Directive, Vec<&str>)> = BTreeMap::new();

@@ -66,12 +66,12 @@ pub fn check_lines(

                match noqa {
                    (Directive::All(_, _), matches) => {
-                        matches.push(check.kind.code().as_str());
+                        matches.push(check.kind.code().as_ref());
                        ignored.push(index)
                    }
                    (Directive::Codes(_, _, codes), matches) => {
-                        if codes.contains(&check.kind.code().as_str()) {
-                            matches.push(check.kind.code().as_str());
+                        if codes.contains(&check.kind.code().as_ref()) {
+                            matches.push(check.kind.code().as_ref());
                            ignored.push(index);
                        }
                    }
@@ -98,11 +98,11 @@ pub fn check_lines(

                match noqa {
                    (Directive::All(_, _), matches) => {
-                        matches.push(check.kind.code().as_str());
+                        matches.push(check.kind.code().as_ref());
                    }
                    (Directive::Codes(_, _, codes), matches) => {
-                        if codes.contains(&check.kind.code().as_str()) {
-                            matches.push(check.kind.code().as_str());
+                        if codes.contains(&check.kind.code().as_ref()) {
+                            matches.push(check.kind.code().as_ref());
                        } else {
                            line_checks.push(check);
                        }
@@ -113,6 +113,45 @@ pub fn check_lines(
        }
    }

+    // Enforce newlines at end of files.
+    if settings.enabled.contains(&CheckCode::W292) && !contents.ends_with('\n') {
+        // Note: if `lines.last()` is `None`, then `contents` is empty (and so we don't want to
+        // raise W292 anyway).
+        if let Some(line) = lines.last() {
+            let lineno = lines.len() - 1;
+            let noqa_lineno = noqa_line_for
+                .get(lineno)
+                .map(|lineno| lineno - 1)
+                .unwrap_or(lineno);
+
+            let noqa = noqa_directives
+                .entry(noqa_lineno)
+                .or_insert_with(|| (noqa::extract_noqa_directive(lines[noqa_lineno]), vec![]));
+
+            let check = Check::new(
+                CheckKind::NoNewLineAtEndOfFile,
+                Range {
+                    location: Location::new(lines.len(), line.len() + 1),
+                    end_location: Location::new(lines.len(), line.len() + 1),
+                },
+            );
+
+            match noqa {
+                (Directive::All(_, _), matches) => {
+                    matches.push(check.kind.code().as_ref());
+                }
+                (Directive::Codes(_, _, codes), matches) => {
+                    if codes.contains(&check.kind.code().as_ref()) {
+                        matches.push(check.kind.code().as_ref());
+                    } else {
+                        line_checks.push(check);
+                    }
+                }
+                (Directive::None, _) => line_checks.push(check),
+            }
+        }
+    }
+
    // Enforce that the noqa directive was actually used.
    if enforce_noqa {
        for (row, (directive, matches)) in noqa_directives {
@@ -145,15 +184,15 @@ pub fn check_lines(
                    let mut valid_codes = vec![];
                    for code in codes {
                        if !matches.contains(&code) {
-                            invalid_codes.push(code);
+                            invalid_codes.push(code.to_string());
                        } else {
-                            valid_codes.push(code);
+                            valid_codes.push(code.to_string());
                        }
                    }

                    if !invalid_codes.is_empty() {
                        let mut check = Check::new(
-                            CheckKind::UnusedNOQA(Some(invalid_codes.join(", "))),
+                            CheckKind::UnusedNOQA(Some(invalid_codes)),
                            Range {
                                location: Location::new(row + 1, start + 1),
                                end_location: Location::new(row + 1, end + 1),
--- a/src/checks.rs
+++ b/src/checks.rs
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -0,0 +1,136 @@
+use std::fmt;
+use std::path::PathBuf;
+
+use clap::{command, Parser};
+use log::warn;
+use regex::Regex;
+
+use crate::checks::CheckCode;
+use crate::printer::SerializationFormat;
+use crate::pyproject::StrCheckCodePair;
+use crate::settings::PythonVersion;
+use crate::RawSettings;
+
+#[derive(Debug, Parser)]
+#[command(author, about = "ruff: An extremely fast Python linter.")]
+#[command(version)]
+pub struct Cli {
+    #[arg(required = true)]
+    pub files: Vec<PathBuf>,
+    /// Enable verbose logging.
+    #[arg(short, long)]
+    pub verbose: bool,
+    /// Disable all logging (but still exit with status code "1" upon detecting errors).
+    #[arg(short, long)]
+    pub quiet: bool,
+    /// Exit with status code "0", even upon detecting errors.
+    #[arg(short, long)]
+    pub exit_zero: bool,
+    /// Run in watch mode by re-running whenever files change.
+    #[arg(short, long)]
+    pub watch: bool,
+    /// Attempt to automatically fix lint errors.
+    #[arg(short, long)]
+    pub fix: bool,
+    /// Disable cache reads.
+    #[arg(short, long)]
+    pub no_cache: bool,
+    /// List of error codes to enable.
+    #[arg(long, value_delimiter = ',')]
+    pub select: Vec<CheckCode>,
+    /// Like --select, but adds additional error codes on top of the selected ones.
+    #[arg(long, value_delimiter = ',')]
+    pub extend_select: Vec<CheckCode>,
+    /// List of error codes to ignore.
+    #[arg(long, value_delimiter = ',')]
+    pub ignore: Vec<CheckCode>,
+    /// Like --ignore, but adds additional error codes on top of the ignored ones.
+    #[arg(long, value_delimiter = ',')]
+    pub extend_ignore: Vec<CheckCode>,
+    /// List of paths, used to exclude files and/or directories from checks.
+    #[arg(long, value_delimiter = ',')]
+    pub exclude: Vec<String>,
+    /// Like --exclude, but adds additional files and directories on top of the excluded ones.
+    #[arg(long, value_delimiter = ',')]
+    pub extend_exclude: Vec<String>,
+    /// List of mappings from file pattern to code to exclude
+    #[arg(long, value_delimiter = ',')]
+    pub per_file_ignores: Vec<StrCheckCodePair>,
+    /// Output serialization format for error messages.
+    #[arg(long, value_enum, default_value_t=SerializationFormat::Text)]
+    pub format: SerializationFormat,
+    /// See the files ruff will be run against with the current settings.
+    #[arg(long)]
+    pub show_files: bool,
+    /// See ruff's settings.
+    #[arg(long)]
+    pub show_settings: bool,
+    /// Enable automatic additions of noqa directives to failing lines.
+    #[arg(long)]
+    pub add_noqa: bool,
+    /// Regular expression matching the name of dummy variables.
+    #[arg(long)]
+    pub dummy_variable_rgx: Option<Regex>,
+    /// The minimum Python version that should be supported.
+    #[arg(long)]
+    pub target_version: Option<PythonVersion>,
+    /// Round-trip auto-formatting.
+    // TODO(charlie): This should be a sub-command.
+    #[arg(long, hide = true)]
+    pub autoformat: bool,
+}
+
+pub enum Warnable {
+    Select,
+    ExtendSelect,
+}
+
+impl fmt::Display for Warnable {
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
+        match self {
+            Warnable::Select => fmt.write_str("--select"),
+            Warnable::ExtendSelect => fmt.write_str("--extend-select"),
+        }
+    }
+}
+
+/// Warn the user if they attempt to enable a code that won't be respected.
+pub fn warn_on(
+    flag: Warnable,
+    codes: &Vec<CheckCode>,
+    cli_ignore: &Vec<CheckCode>,
+    cli_extend_ignore: &Vec<CheckCode>,
+    pyproject_settings: &RawSettings,
+    pyproject_path: &Option<PathBuf>,
+) {
+    for code in codes {
+        if !cli_ignore.is_empty() {
+            if cli_ignore.contains(code) {
+                warn!("{code:?} was passed to {flag}, but ignored via --ignore")
+            }
+        } else if pyproject_settings.ignore.contains(code) {
+            if let Some(path) = pyproject_path {
+                warn!(
+                    "{code:?} was passed to {flag}, but ignored by the `ignore` field in {}",
+                    path.to_string_lossy()
+                )
+            } else {
+                warn!("{code:?} was passed to {flag}, but ignored by the default `ignore` field",)
+            }
+        }
+        if !cli_extend_ignore.is_empty() {
+            if cli_extend_ignore.contains(code) {
+                warn!("{code:?} was passed to {flag}, but ignored via --extend-ignore")
+            }
+        } else if pyproject_settings.extend_ignore.contains(code) {
+            if let Some(path) = pyproject_path {
+                warn!(
+                    "{code:?} was passed to {flag}, but ignored by the `extend_ignore` field in {}",
+                    path.to_string_lossy()
+                )
+            } else {
+                warn!("{code:?} was passed to {flag}, but ignored by the default `extend_ignore` field")
+            }
+        }
+    }
+}
--- a/src/code_gen.rs
+++ b/src/code_gen.rs
--- a/src/docstrings.rs
+++ b/src/docstrings.rs
@@ -0,0 +1,198 @@
+use crate::ast::types::Range;
+use crate::check_ast::Checker;
+use crate::checks::{Check, CheckKind};
+use rustpython_ast::{Constant, Expr, ExprKind, Stmt, StmtKind};
+
+#[derive(Debug)]
+pub enum DocstringKind {
+    Module,
+    Function,
+    Class,
+}
+
+#[derive(Debug)]
+pub struct Docstring<'a> {
+    pub kind: DocstringKind,
+    pub parent: Option<&'a Stmt>,
+    pub expr: &'a Expr,
+}
+
+/// Extract a docstring from an expression.
+pub fn extract<'a, 'b>(
+    checker: &'a Checker,
+    stmt: &'b Stmt,
+    expr: &'b Expr,
+) -> Option<Docstring<'b>> {
+    let defined_in = checker
+        .binding_context()
+        .defined_in
+        .map(|index| checker.parents[index]);
+
+    match defined_in {
+        None => {
+            if checker.initial {
+                return Some(Docstring {
+                    kind: DocstringKind::Module,
+                    parent: None,
+                    expr,
+                });
+            }
+        }
+        Some(parent) => {
+            if let StmtKind::FunctionDef { body, .. }
+            | StmtKind::AsyncFunctionDef { body, .. }
+            | StmtKind::ClassDef { body, .. } = &parent.node
+            {
+                if body.first().map(|node| node == stmt).unwrap_or_default() {
+                    return Some(Docstring {
+                        kind: if matches!(&parent.node, StmtKind::ClassDef { .. }) {
+                            DocstringKind::Class
+                        } else {
+                            DocstringKind::Function
+                        },
+                        parent: None,
+                        expr,
+                    });
+                }
+            }
+        }
+    }
+
+    None
+}
+
+pub fn one_liner(checker: &mut Checker, docstring: &Docstring) {
+    if let ExprKind::Constant {
+        value: Constant::Str(string),
+        ..
+    } = &docstring.expr.node
+    {
+        let mut line_count = 0;
+        let mut non_empty_line_count = 0;
+        for line in string.lines() {
+            line_count += 1;
+            if !line.trim().is_empty() {
+                non_empty_line_count += 1;
+            }
+            if non_empty_line_count > 1 {
+                return;
+            }
+        }
+
+        if non_empty_line_count == 1 && line_count > 1 {
+            checker.add_check(Check::new(
+                CheckKind::OneLinerDocstring,
+                Range::from_located(docstring.expr),
+            ));
+        }
+    }
+}
+
+pub fn blank_after_summary(checker: &mut Checker, docstring: &Docstring) {
+    if let ExprKind::Constant {
+        value: Constant::Str(string),
+        ..
+    } = &docstring.expr.node
+    {
+        let mut lines_count = 1;
+        let mut blanks_count = 0;
+        for line in string.trim().lines().skip(1) {
+            lines_count += 1;
+            if line.trim().is_empty() {
+                blanks_count += 1;
+            } else {
+                break;
+            }
+        }
+        if lines_count > 1 && blanks_count != 1 {
+            checker.add_check(Check::new(
+                CheckKind::BlankLineAfterSummary,
+                Range::from_located(docstring.expr),
+            ));
+        }
+    }
+}
+
+pub fn newline_after_last_paragraph(checker: &mut Checker, docstring: &Docstring) {
+    if let ExprKind::Constant {
+        value: Constant::Str(string),
+        ..
+    } = &docstring.expr.node
+    {
+        let mut line_count = 0;
+        for line in string.lines() {
+            if !line.trim().is_empty() {
+                line_count += 1;
+            }
+            if line_count > 1 {
+                let content = checker
+                    .locator
+                    .slice_source_code_range(&Range::from_located(docstring.expr));
+                if let Some(line) = content.lines().last() {
+                    let line = line.trim();
+                    if line != "\"\"\"" && line != "'''" {
+                        checker.add_check(Check::new(
+                            CheckKind::NewLineAfterLastParagraph,
+                            Range::from_located(docstring.expr),
+                        ));
+                    }
+                }
+                return;
+            }
+        }
+    }
+}
+
+pub fn no_surrounding_whitespace(checker: &mut Checker, docstring: &Docstring) {
+    if let ExprKind::Constant {
+        value: Constant::Str(string),
+        ..
+    } = &docstring.expr.node
+    {
+        let mut lines = string.lines();
+        if let Some(line) = lines.next() {
+            if line.trim().is_empty() {
+                return;
+            }
+
+            if line.starts_with(' ') || (matches!(lines.next(), None) && line.ends_with(' ')) {
+                checker.add_check(Check::new(
+                    CheckKind::NoSurroundingWhitespace,
+                    Range::from_located(docstring.expr),
+                ));
+            }
+        }
+    }
+}
+
+pub fn not_empty(checker: &mut Checker, docstring: &Docstring) {
+    if let ExprKind::Constant {
+        value: Constant::Str(string),
+        ..
+    } = &docstring.expr.node
+    {
+        if string.trim().is_empty() {
+            checker.add_check(Check::new(
+                CheckKind::EmptyDocstring,
+                Range::from_located(docstring.expr),
+            ));
+        }
+    }
+}
+
+pub fn ends_with_period(checker: &mut Checker, docstring: &Docstring) {
+    if let ExprKind::Constant {
+        value: Constant::Str(string),
+        ..
+    } = &docstring.expr.node
+    {
+        if let Some(string) = string.lines().next() {
+            if !string.ends_with('.') {
+                checker.add_check(Check::new(
+                    CheckKind::DocstringEndsInNonPeriod,
+                    Range::from_located(docstring.expr),
+                ));
+            }
+        }
+    }
+}
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -7,7 +7,7 @@ use rustpython_parser::lexer::LexResult;
 use crate::autofix::fixer::Mode;
 use crate::linter::{check_path, tokenize};
 use crate::message::Message;
-use crate::settings::Settings;
+use crate::settings::{RawSettings, Settings};

 mod ast;
 mod autofix;
@@ -15,11 +15,15 @@ pub mod cache;
 pub mod check_ast;
 mod check_lines;
 pub mod checks;
+pub mod cli;
+pub mod code_gen;
+pub mod docstrings;
 pub mod fs;
 pub mod linter;
 pub mod logging;
 pub mod message;
 mod noqa;
+mod plugins;
 pub mod printer;
 pub mod pyproject;
 mod python;
@@ -39,7 +43,7 @@ pub fn check(path: &Path, contents: &str) -> Result<Vec<Message>> {
        None => debug!("Unable to find pyproject.toml; using default settings..."),
    };

-    let settings = Settings::from_pyproject(pyproject, project_root)?;
+    let settings = Settings::from_raw(RawSettings::from_pyproject(&pyproject, &project_root)?);

    // Tokenize once.
    let tokens: Vec<LexResult> = tokenize(contents);
--- a/src/linter.rs
+++ b/src/linter.rs
@@ -1,3 +1,4 @@
+use std::fs::write;
 use std::path::Path;

 use anyhow::Result;
@@ -11,6 +12,7 @@ use crate::autofix::fixer::fix_file;
 use crate::check_ast::check_ast;
 use crate::check_lines::check_lines;
 use crate::checks::{Check, CheckCode, CheckKind, LintSource};
+use crate::code_gen::SourceGenerator;
 use crate::message::Message;
 use crate::noqa::add_noqa;
 use crate::settings::Settings;
@@ -42,7 +44,7 @@ pub(crate) fn check_path(

    // Run the AST-based checks.
    if settings
-        .select
+        .enabled
        .iter()
        .any(|check_code| matches!(check_code.lint_source(), LintSource::AST))
    {
@@ -51,7 +53,7 @@ pub(crate) fn check_path(
                checks.extend(check_ast(&python_ast, contents, settings, autofix, path))
            }
            Err(parse_error) => {
-                if settings.select.contains(&CheckCode::E999) {
+                if settings.enabled.contains(&CheckCode::E999) {
                    checks.push(Check::new(
                        CheckKind::SyntaxError(parse_error.error.to_string()),
                        Range {
@@ -151,6 +153,22 @@ pub fn add_noqa_to_path(path: &Path, settings: &Settings) -> Result<usize> {
    add_noqa(&checks, &contents, &noqa_line_for, path)
 }

+pub fn autoformat_path(path: &Path) -> Result<()> {
+    // Read the file from disk.
+    let contents = fs::read_file(path)?;
+
+    // Tokenize once.
+    let tokens: Vec<LexResult> = tokenize(&contents);
+
+    // Generate the AST.
+    let python_ast = parser::parse_program_tokens(tokens, "<filename>")?;
+    let mut generator: SourceGenerator = Default::default();
+    generator.unparse_suite(&python_ast)?;
+    write(path, generator.generate()?)?;
+
+    Ok(())
+}
+
 #[cfg(test)]
 mod tests {
    use std::path::Path;
@@ -322,9 +340,93 @@ mod tests {
    }

    #[test]
-    fn f401() -> Result<()> {
+    fn w292_0() -> Result<()> {
        let mut checks = check_path(
-            Path::new("./resources/test/fixtures/F401.py"),
+            Path::new("./resources/test/fixtures/W292_0.py"),
+            &settings::Settings::for_rule(CheckCode::W292),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn w292_1() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/W292_1.py"),
+            &settings::Settings::for_rule(CheckCode::W292),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn w292_2() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/W292_2.py"),
+            &settings::Settings::for_rule(CheckCode::W292),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn f401_0() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/F401_0.py"),
+            &settings::Settings::for_rule(CheckCode::F401),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn f401_1() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/F401_1.py"),
+            &settings::Settings::for_rule(CheckCode::F401),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn f401_2() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/F401_2.py"),
+            &settings::Settings::for_rule(CheckCode::F401),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn f401_3() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/F401_3.py"),
+            &settings::Settings::for_rule(CheckCode::F401),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn f401_4() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/F401_4.py"),
            &settings::Settings::for_rule(CheckCode::F401),
            &fixer::Mode::Generate,
        )?;
@@ -660,66 +762,6 @@ mod tests {
        Ok(())
    }

-    #[test]
-    fn m001() -> Result<()> {
-        let mut checks = check_path(
-            Path::new("./resources/test/fixtures/M001.py"),
-            &settings::Settings::for_rules(vec![CheckCode::M001, CheckCode::E501, CheckCode::F841]),
-            &fixer::Mode::Generate,
-        )?;
-        checks.sort_by_key(|check| check.location);
-        insta::assert_yaml_snapshot!(checks);
-        Ok(())
-    }
-
-    #[test]
-    fn r001() -> Result<()> {
-        let mut checks = check_path(
-            Path::new("./resources/test/fixtures/R001.py"),
-            &settings::Settings::for_rule(CheckCode::R001),
-            &fixer::Mode::Generate,
-        )?;
-        checks.sort_by_key(|check| check.location);
-        insta::assert_yaml_snapshot!(checks);
-        Ok(())
-    }
-
-    #[test]
-    fn r002() -> Result<()> {
-        let mut checks = check_path(
-            Path::new("./resources/test/fixtures/R002.py"),
-            &settings::Settings::for_rule(CheckCode::R002),
-            &fixer::Mode::Generate,
-        )?;
-        checks.sort_by_key(|check| check.location);
-        insta::assert_yaml_snapshot!(checks);
-        Ok(())
-    }
-
-    #[test]
-    fn init() -> Result<()> {
-        let mut checks = check_path(
-            Path::new("./resources/test/fixtures/__init__.py"),
-            &settings::Settings::for_rules(vec![CheckCode::F821, CheckCode::F822]),
-            &fixer::Mode::Generate,
-        )?;
-        checks.sort_by_key(|check| check.location);
-        insta::assert_yaml_snapshot!(checks);
-        Ok(())
-    }
-
-    #[test]
-    fn future_annotations() -> Result<()> {
-        let mut checks = check_path(
-            Path::new("./resources/test/fixtures/future_annotations.py"),
-            &settings::Settings::for_rules(vec![CheckCode::F401, CheckCode::F821]),
-            &fixer::Mode::Generate,
-        )?;
-        checks.sort_by_key(|check| check.location);
-        insta::assert_yaml_snapshot!(checks);
-        Ok(())
-    }
-
    #[test]
    fn e999() -> Result<()> {
        let mut checks = check_path(
@@ -769,10 +811,238 @@ mod tests {
    }

    #[test]
-    fn spr001() -> Result<()> {
+    fn b011() -> Result<()> {
        let mut checks = check_path(
-            Path::new("./resources/test/fixtures/SPR001.py"),
-            &settings::Settings::for_rule(CheckCode::SPR001),
+            Path::new("./resources/test/fixtures/B011.py"),
+            &settings::Settings::for_rule(CheckCode::B011),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn b014() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/B014.py"),
+            &settings::Settings::for_rule(CheckCode::B014),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn b025() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/B025.py"),
+            &settings::Settings::for_rule(CheckCode::B025),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn c400() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/C400.py"),
+            &settings::Settings::for_rule(CheckCode::C400),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn c401() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/C401.py"),
+            &settings::Settings::for_rule(CheckCode::C401),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn c402() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/C402.py"),
+            &settings::Settings::for_rule(CheckCode::C402),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn c403() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/C403.py"),
+            &settings::Settings::for_rule(CheckCode::C403),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn c404() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/C404.py"),
+            &settings::Settings::for_rule(CheckCode::C404),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn c405() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/C405.py"),
+            &settings::Settings::for_rule(CheckCode::C405),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn c406() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/C406.py"),
+            &settings::Settings::for_rule(CheckCode::C406),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn c408() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/C408.py"),
+            &settings::Settings::for_rule(CheckCode::C408),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn c409() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/C409.py"),
+            &settings::Settings::for_rule(CheckCode::C409),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn c410() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/C410.py"),
+            &settings::Settings::for_rule(CheckCode::C410),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn c415() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/C415.py"),
+            &settings::Settings::for_rule(CheckCode::C415),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn d200() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/D.py"),
+            &settings::Settings::for_rule(CheckCode::D200),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn d205() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/D.py"),
+            &settings::Settings::for_rule(CheckCode::D205),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn d209() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/D.py"),
+            &settings::Settings::for_rule(CheckCode::D209),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn d210() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/D.py"),
+            &settings::Settings::for_rule(CheckCode::D210),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn d400() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/D.py"),
+            &settings::Settings::for_rule(CheckCode::D400),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn d419() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/D.py"),
+            &settings::Settings::for_rule(CheckCode::D419),
            &fixer::Mode::Generate,
        )?;
        checks.sort_by_key(|check| check.location);
@@ -803,4 +1073,136 @@ mod tests {
        insta::assert_yaml_snapshot!(checks);
        Ok(())
    }
+
+    #[test]
+    fn u001() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/U001.py"),
+            &settings::Settings::for_rule(CheckCode::U001),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn u002() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/U002.py"),
+            &settings::Settings::for_rule(CheckCode::U002),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn u003() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/U003.py"),
+            &settings::Settings::for_rule(CheckCode::U003),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn u004() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/U004.py"),
+            &settings::Settings::for_rule(CheckCode::U004),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn u005() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/U005.py"),
+            &settings::Settings::for_rule(CheckCode::U005),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn u006() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/U006.py"),
+            &settings::Settings::for_rule(CheckCode::U006),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn u007() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/U007.py"),
+            &settings::Settings::for_rule(CheckCode::U007),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn u008() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/U008.py"),
+            &settings::Settings::for_rule(CheckCode::U008),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn m001() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/M001.py"),
+            &settings::Settings::for_rules(vec![CheckCode::M001, CheckCode::E501, CheckCode::F841]),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn init() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/__init__.py"),
+            &settings::Settings::for_rules(vec![CheckCode::F821, CheckCode::F822]),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn future_annotations() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/future_annotations.py"),
+            &settings::Settings::for_rules(vec![CheckCode::F401, CheckCode::F821]),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
 }
--- a/src/main.rs
+++ b/src/main.rs
@@ -5,93 +5,33 @@ use std::sync::mpsc::channel;
 use std::time::Instant;

 use anyhow::Result;
-use clap::{command, Parser};
+use clap::Parser;
 use colored::Colorize;
 use log::{debug, error};
 use notify::{raw_watcher, RecursiveMode, Watcher};
 use rayon::prelude::*;
-use regex::Regex;
 use walkdir::DirEntry;

-use ::ruff::cache;
-use ::ruff::checks::CheckCode;
-use ::ruff::checks::CheckKind;
-use ::ruff::fs::iter_python_files;
-use ::ruff::linter::add_noqa_to_path;
-use ::ruff::linter::lint_path;
-use ::ruff::logging::set_up_logging;
-use ::ruff::message::Message;
-use ::ruff::printer::{Printer, SerializationFormat};
-use ::ruff::pyproject::{self, StrCheckCodePair};
-use ::ruff::settings::CurrentSettings;
-use ::ruff::settings::{FilePattern, PerFileIgnore, Settings};
-use ::ruff::tell_user;
+use ruff::cache;
+use ruff::checks::CheckCode;
+use ruff::checks::CheckKind;
+use ruff::cli::{warn_on, Cli, Warnable};
+use ruff::fs::iter_python_files;
+use ruff::linter::add_noqa_to_path;
+use ruff::linter::autoformat_path;
+use ruff::linter::lint_path;
+use ruff::logging::set_up_logging;
+use ruff::message::Message;
+use ruff::printer::{Printer, SerializationFormat};
+use ruff::pyproject::{self};
+use ruff::settings::CurrentSettings;
+use ruff::settings::RawSettings;
+use ruff::settings::{FilePattern, PerFileIgnore, Settings};
+use ruff::tell_user;

 const CARGO_PKG_NAME: &str = env!("CARGO_PKG_NAME");
 const CARGO_PKG_VERSION: &str = env!("CARGO_PKG_VERSION");

-#[derive(Debug, Parser)]
-#[command(author, about = "ruff: An extremely fast Python linter.")]
-#[command(version)]
-struct Cli {
-    #[arg(required = true)]
-    files: Vec<PathBuf>,
-    /// Enable verbose logging.
-    #[arg(short, long)]
-    verbose: bool,
-    /// Disable all logging (but still exit with status code "1" upon detecting errors).
-    #[arg(short, long)]
-    quiet: bool,
-    /// Exit with status code "0", even upon detecting errors.
-    #[arg(short, long)]
-    exit_zero: bool,
-    /// Run in watch mode by re-running whenever files change.
-    #[arg(short, long)]
-    watch: bool,
-    /// Attempt to automatically fix lint errors.
-    #[arg(short, long)]
-    fix: bool,
-    /// Disable cache reads.
-    #[arg(short, long)]
-    no_cache: bool,
-    /// List of error codes to enable.
-    #[arg(long, value_delimiter = ',')]
-    select: Vec<CheckCode>,
-    /// Like --select, but adds additional error codes on top of the selected ones.
-    #[arg(long, value_delimiter = ',')]
-    extend_select: Vec<CheckCode>,
-    /// List of error codes to ignore.
-    #[arg(long, value_delimiter = ',')]
-    ignore: Vec<CheckCode>,
-    /// Like --ignore, but adds additional error codes on top of the ignored ones.
-    #[arg(long, value_delimiter = ',')]
-    extend_ignore: Vec<CheckCode>,
-    /// List of paths, used to exclude files and/or directories from checks.
-    #[arg(long, value_delimiter = ',')]
-    exclude: Vec<String>,
-    /// Like --exclude, but adds additional files and directories on top of the excluded ones.
-    #[arg(long, value_delimiter = ',')]
-    extend_exclude: Vec<String>,
-    /// List of mappings from file pattern to code to exclude
-    #[arg(long, value_delimiter = ',')]
-    per_file_ignores: Vec<StrCheckCodePair>,
-    /// Output serialization format for error messages.
-    #[arg(long, value_enum, default_value_t=SerializationFormat::Text)]
-    format: SerializationFormat,
-    /// See the files ruff will be run against with the current settings.
-    #[arg(long)]
-    show_files: bool,
-    /// See ruff's settings.
-    #[arg(long)]
-    show_settings: bool,
-    /// Enable automatic additions of noqa directives to failing lines.
-    #[arg(long)]
-    add_noqa: bool,
-    /// Regular expression matching the name of dummy variables.
-    #[arg(long)]
-    dummy_variable_rgx: Option<Regex>,
-}
-
 #[cfg(feature = "update-informer")]
 fn check_for_updates() {
    use update_informer::{registry, Check};
@@ -116,8 +56,11 @@ fn check_for_updates() {
    }
 }

-fn show_settings(settings: Settings) {
-    println!("{:#?}", CurrentSettings::from_settings(settings));
+fn show_settings(settings: RawSettings, project_root: Option<PathBuf>, pyproject: Option<PathBuf>) {
+    println!(
+        "{:#?}",
+        CurrentSettings::from_settings(settings, project_root, pyproject)
+    );
 }

 fn show_files(files: &[PathBuf], settings: &Settings) {
@@ -165,7 +108,7 @@ fn run_once(
            }
            .unwrap_or_else(|(path, message)| {
                if let Some(path) = path {
-                    if settings.select.contains(&CheckCode::E902) {
+                    if settings.enabled.contains(&CheckCode::E902) {
                        vec![Message {
                            kind: CheckKind::IOError(message),
                            fixed: false,
@@ -222,6 +165,33 @@ fn add_noqa(files: &[PathBuf], settings: &Settings) -> Result<usize> {
    Ok(modifications)
 }

+fn autoformat(files: &[PathBuf], settings: &Settings) -> Result<usize> {
+    // Collect all the files to format.
+    let start = Instant::now();
+    let paths: Vec<DirEntry> = files
+        .iter()
+        .flat_map(|path| iter_python_files(path, &settings.exclude, &settings.extend_exclude))
+        .flatten()
+        .collect();
+    let duration = start.elapsed();
+    debug!("Identified files to lint in: {:?}", duration);
+
+    let start = Instant::now();
+    let modifications = paths
+        .par_iter()
+        .map(|entry| {
+            let path = entry.path();
+            autoformat_path(path)
+        })
+        .flatten()
+        .count();
+
+    let duration = start.elapsed();
+    debug!("Auto-formatted files in: {:?}", duration);
+
+    Ok(modifications)
+}
+
 fn inner_main() -> Result<ExitCode> {
    let cli = Cli::parse();

@@ -256,7 +226,7 @@ fn inner_main() -> Result<ExitCode> {
        .map(|pair| PerFileIgnore::new(pair, &project_root))
        .collect();

-    let mut settings = Settings::from_pyproject(pyproject, project_root)?;
+    let mut settings = RawSettings::from_pyproject(&pyproject, &project_root)?;
    if !exclude.is_empty() {
        settings.exclude = exclude;
    }
@@ -267,17 +237,35 @@ fn inner_main() -> Result<ExitCode> {
        settings.per_file_ignores = per_file_ignores;
    }
    if !cli.select.is_empty() {
-        settings.clear();
-        settings.select(cli.select);
+        warn_on(
+            Warnable::Select,
+            &cli.select,
+            &cli.ignore,
+            &cli.extend_ignore,
+            &settings,
+            &pyproject,
+        );
+        settings.select = cli.select;
    }
    if !cli.extend_select.is_empty() {
-        settings.select(cli.extend_select);
+        warn_on(
+            Warnable::ExtendSelect,
+            &cli.extend_select,
+            &cli.ignore,
+            &cli.extend_ignore,
+            &settings,
+            &pyproject,
+        );
+        settings.extend_select = cli.extend_select;
    }
    if !cli.ignore.is_empty() {
-        settings.ignore(&cli.ignore);
+        settings.ignore = cli.ignore;
    }
    if !cli.extend_ignore.is_empty() {
-        settings.ignore(&cli.extend_ignore);
+        settings.extend_ignore = cli.extend_ignore;
+    }
+    if let Some(target_version) = cli.target_version {
+        settings.target_version = target_version;
    }
    if let Some(dummy_variable_rgx) = cli.dummy_variable_rgx {
        settings.dummy_variable_rgx = dummy_variable_rgx;
@@ -287,12 +275,15 @@ fn inner_main() -> Result<ExitCode> {
        eprintln!("Error: specify --show-settings or show-files (not both).");
        return Ok(ExitCode::FAILURE);
    }
-    if cli.show_files {
-        show_files(&cli.files, &settings);
+    if cli.show_settings {
+        show_settings(settings, project_root, pyproject);
        return Ok(ExitCode::SUCCESS);
    }
-    if cli.show_settings {
-        show_settings(settings);
+
+    let settings = Settings::from_raw(settings);
+
+    if cli.show_files {
+        show_files(&cli.files, &settings);
        return Ok(ExitCode::SUCCESS);
    }

@@ -308,6 +299,10 @@ fn inner_main() -> Result<ExitCode> {
            eprintln!("Warning: --no-qa is not enabled in watch mode.");
        }

+        if cli.autoformat {
+            eprintln!("Warning: --autoformat is not enabled in watch mode.");
+        }
+
        if cli.format != SerializationFormat::Text {
            eprintln!("Warning: --format 'text' is used in watch mode.");
        }
@@ -351,6 +346,11 @@ fn inner_main() -> Result<ExitCode> {
        if modifications > 0 {
            println!("Added {modifications} noqa directives.");
        }
+    } else if cli.autoformat {
+        let modifications = autoformat(&cli.files, &settings)?;
+        if modifications > 0 {
+            println!("Formatted {modifications} files.");
+        }
    } else {
        let messages = run_once(&cli.files, &settings, !cli.no_cache, cli.fix)?;
        if !cli.quiet {
@@ -360,7 +360,7 @@ fn inner_main() -> Result<ExitCode> {
        #[cfg(feature = "update-informer")]
        check_for_updates();

-        if !messages.is_empty() && !cli.exit_zero {
+        if messages.iter().any(|message| !message.fixed) && !cli.exit_zero {
            return Ok(ExitCode::FAILURE);
        }
    }
--- a/src/message.rs
+++ b/src/message.rs
@@ -45,7 +45,7 @@ impl fmt::Display for Message {
            ":".cyan(),
            self.location.column(),
            ":".cyan(),
-            self.kind.code().as_str().red().bold(),
+            self.kind.code().as_ref().red().bold(),
            self.kind.body()
        )
    }
--- a/src/noqa.rs
+++ b/src/noqa.rs
@@ -104,9 +104,7 @@ fn add_noqa_inner(
            .unwrap_or(lineno);

        if !codes.is_empty() {
-            let matches = matches_by_line
-                .entry(noqa_lineno)
-                .or_insert_with(BTreeSet::new);
+            let matches = matches_by_line.entry(noqa_lineno).or_default();
            matches.append(&mut codes);
        }
    }
@@ -127,7 +125,7 @@ fn add_noqa_inner(
                    Directive::All(start, _) => output.push_str(&line[..start]),
                    Directive::Codes(start, _, _) => output.push_str(&line[..start]),
                };
-                let codes: Vec<&str> = codes.iter().map(|code| code.as_str()).collect();
+                let codes: Vec<&str> = codes.iter().map(|code| code.as_ref()).collect();
                output.push_str("  # noqa: ");
                output.push_str(&codes.join(", "));
                output.push('\n');
@@ -152,12 +150,12 @@ pub fn add_noqa(

 #[cfg(test)]
 mod tests {
-    use crate::ast::types::Range;
    use anyhow::Result;
    use rustpython_parser::ast::Location;
    use rustpython_parser::lexer;
    use rustpython_parser::lexer::LexResult;

+    use crate::ast::types::Range;
    use crate::checks::{Check, CheckKind};
    use crate::noqa::{add_noqa_inner, extract_noqa_line_for};

--- a/src/plugins.rs
+++ b/src/plugins.rs
@@ -0,0 +1,29 @@
+pub use assert_false::assert_false;
+pub use assert_tuple::assert_tuple;
+pub use deprecated_unittest_alias::deprecated_unittest_alias;
+pub use duplicate_exceptions::duplicate_exceptions;
+pub use if_tuple::if_tuple;
+pub use invalid_print_syntax::invalid_print_syntax;
+pub use print_call::print_call;
+pub use super_call_with_parameters::super_call_with_parameters;
+pub use type_of_primitive::type_of_primitive;
+pub use unnecessary_abspath::unnecessary_abspath;
+pub use use_pep585_annotation::use_pep585_annotation;
+pub use use_pep604_annotation::use_pep604_annotation;
+pub use useless_metaclass_type::useless_metaclass_type;
+pub use useless_object_inheritance::useless_object_inheritance;
+
+mod assert_false;
+mod assert_tuple;
+mod deprecated_unittest_alias;
+mod duplicate_exceptions;
+mod if_tuple;
+mod invalid_print_syntax;
+mod print_call;
+mod super_call_with_parameters;
+mod type_of_primitive;
+mod unnecessary_abspath;
+mod use_pep585_annotation;
+mod use_pep604_annotation;
+mod useless_metaclass_type;
+mod useless_object_inheritance;
--- a/src/plugins/assert_false.rs
+++ b/src/plugins/assert_false.rs
@@ -0,0 +1,61 @@
+use rustpython_ast::{Constant, Expr, ExprContext, ExprKind, Stmt, StmtKind};
+
+use crate::ast::types::Range;
+use crate::autofix::fixer;
+use crate::check_ast::Checker;
+use crate::checks::{Check, CheckKind, Fix};
+use crate::code_gen::SourceGenerator;
+
+fn assertion_error(msg: &Option<Box<Expr>>) -> Stmt {
+    Stmt::new(
+        Default::default(),
+        Default::default(),
+        StmtKind::Raise {
+            exc: Some(Box::new(Expr::new(
+                Default::default(),
+                Default::default(),
+                ExprKind::Call {
+                    func: Box::new(Expr::new(
+                        Default::default(),
+                        Default::default(),
+                        ExprKind::Name {
+                            id: "AssertionError".to_string(),
+                            ctx: ExprContext::Load,
+                        },
+                    )),
+                    args: if let Some(msg) = msg {
+                        vec![*msg.clone()]
+                    } else {
+                        vec![]
+                    },
+                    keywords: vec![],
+                },
+            ))),
+            cause: None,
+        },
+    )
+}
+
+pub fn assert_false(checker: &mut Checker, stmt: &Stmt, test: &Expr, msg: &Option<Box<Expr>>) {
+    if let ExprKind::Constant {
+        value: Constant::Bool(false),
+        ..
+    } = &test.node
+    {
+        let mut check = Check::new(CheckKind::DoNotAssertFalse, Range::from_located(test));
+        if matches!(checker.autofix, fixer::Mode::Generate | fixer::Mode::Apply) {
+            let mut generator = SourceGenerator::new();
+            if let Ok(()) = generator.unparse_stmt(&assertion_error(msg)) {
+                if let Ok(content) = generator.generate() {
+                    check.amend(Fix {
+                        content,
+                        location: stmt.location,
+                        end_location: stmt.end_location,
+                        applied: false,
+                    })
+                }
+            }
+        }
+        checker.add_check(check);
+    }
+}
--- a/src/plugins/assert_tuple.rs
+++ b/src/plugins/assert_tuple.rs
@@ -0,0 +1,13 @@
+use rustpython_ast::{Expr, Stmt};
+
+use crate::ast::checkers;
+use crate::ast::types::{CheckLocator, Range};
+use crate::check_ast::Checker;
+
+pub fn assert_tuple(checker: &mut Checker, stmt: &Stmt, test: &Expr) {
+    if let Some(check) =
+        checkers::assert_tuple(test, checker.locate_check(Range::from_located(stmt)))
+    {
+        checker.add_check(check);
+    }
+}
--- a/src/plugins/deprecated_unittest_alias.rs
+++ b/src/plugins/deprecated_unittest_alias.rs
@@ -0,0 +1,56 @@
+use std::collections::BTreeMap;
+
+use once_cell::sync::Lazy;
+use rustpython_ast::{Expr, ExprKind, Location};
+
+use crate::ast::types::Range;
+use crate::autofix::fixer;
+use crate::check_ast::Checker;
+use crate::checks::{Check, CheckKind, Fix};
+
+static DEPRECATED_ALIASES: Lazy<BTreeMap<&'static str, &'static str>> = Lazy::new(|| {
+    BTreeMap::from([
+        ("failUnlessEqual", "assertEqual"),
+        ("assertEquals", "assertEqual"),
+        ("failIfEqual", "assertNotEqual"),
+        ("assertNotEquals", "assertNotEqual"),
+        ("failUnless", "assertTrue"),
+        ("assert_", "assertTrue"),
+        ("failIf", "assertFalse"),
+        ("failUnlessRaises", "assertRaises"),
+        ("failUnlessAlmostEqual", "assertAlmostEqual"),
+        ("assertAlmostEquals", "assertAlmostEqual"),
+        ("failIfAlmostEqual", "assertNotAlmostEqual"),
+        ("assertNotAlmostEquals", "assertNotAlmostEqual"),
+        ("assertRegexpMatches", "assertRegex"),
+        ("assertNotRegexpMatches", "assertNotRegex"),
+        ("assertRaisesRegexp", "assertRaisesRegex"),
+    ])
+});
+
+pub fn deprecated_unittest_alias(checker: &mut Checker, expr: &Expr) {
+    if let ExprKind::Attribute { value, attr, .. } = &expr.node {
+        if let Some(target) = DEPRECATED_ALIASES.get(attr.as_str()) {
+            if let ExprKind::Name { id, .. } = &value.node {
+                if id == "self" {
+                    let mut check = Check::new(
+                        CheckKind::DeprecatedUnittestAlias(attr.to_string(), target.to_string()),
+                        Range::from_located(expr),
+                    );
+                    if matches!(checker.autofix, fixer::Mode::Generate | fixer::Mode::Apply) {
+                        check.amend(Fix {
+                            content: format!("self.{}", target),
+                            location: Location::new(expr.location.row(), expr.location.column()),
+                            end_location: Location::new(
+                                expr.end_location.row(),
+                                expr.end_location.column(),
+                            ),
+                            applied: false,
+                        });
+                    }
+                    checker.add_check(check);
+                }
+            }
+        }
+    }
+}
--- a/src/plugins/duplicate_exceptions.rs
+++ b/src/plugins/duplicate_exceptions.rs
@@ -0,0 +1,114 @@
+use std::collections::BTreeSet;
+
+use itertools::Itertools;
+use rustpython_ast::{Excepthandler, ExcepthandlerKind, Expr, ExprContext, ExprKind, Stmt};
+
+use crate::ast::helpers;
+use crate::ast::types::{CheckLocator, Range};
+use crate::autofix::fixer;
+use crate::check_ast::Checker;
+use crate::checks::{Check, CheckCode, CheckKind, Fix};
+use crate::code_gen::SourceGenerator;
+
+fn type_pattern(elts: Vec<&Expr>) -> Expr {
+    Expr::new(
+        Default::default(),
+        Default::default(),
+        ExprKind::Tuple {
+            elts: elts.into_iter().cloned().collect(),
+            ctx: ExprContext::Load,
+        },
+    )
+}
+
+pub fn duplicate_handler_exceptions(
+    checker: &mut Checker,
+    expr: &Expr,
+    elts: &Vec<Expr>,
+) -> BTreeSet<String> {
+    let mut seen: BTreeSet<String> = Default::default();
+    let mut duplicates: BTreeSet<String> = Default::default();
+    let mut unique_elts: Vec<&Expr> = Default::default();
+    for type_ in elts {
+        if let Some(name) = helpers::compose_call_path(type_) {
+            if seen.contains(&name) {
+                duplicates.insert(name);
+            } else {
+                seen.insert(name);
+                unique_elts.push(type_);
+            }
+        }
+    }
+
+    if checker.settings.enabled.contains(&CheckCode::B014) {
+        // TODO(charlie): Handle "BaseException" and redundant exception aliases.
+        if !duplicates.is_empty() {
+            let mut check = Check::new(
+                CheckKind::DuplicateHandlerException(
+                    duplicates.into_iter().sorted().collect::<Vec<String>>(),
+                ),
+                checker.locate_check(Range::from_located(expr)),
+            );
+            if matches!(checker.autofix, fixer::Mode::Generate | fixer::Mode::Apply) {
+                // TODO(charlie): If we have a single element, remove the tuple.
+                let mut generator = SourceGenerator::new();
+                if let Ok(()) = generator.unparse_expr(&type_pattern(unique_elts), 0) {
+                    if let Ok(content) = generator.generate() {
+                        check.amend(Fix {
+                            content,
+                            location: expr.location,
+                            end_location: expr.end_location,
+                            applied: false,
+                        })
+                    }
+                }
+            }
+            checker.add_check(check);
+        }
+    }
+
+    seen
+}
+
+pub fn duplicate_exceptions(checker: &mut Checker, stmt: &Stmt, handlers: &[Excepthandler]) {
+    let mut seen: BTreeSet<String> = Default::default();
+    let mut duplicates: BTreeSet<String> = Default::default();
+    for handler in handlers {
+        match &handler.node {
+            ExcepthandlerKind::ExceptHandler { type_, .. } => {
+                if let Some(type_) = type_ {
+                    match &type_.node {
+                        ExprKind::Attribute { .. } | ExprKind::Name { .. } => {
+                            if let Some(name) = helpers::compose_call_path(type_) {
+                                if seen.contains(&name) {
+                                    duplicates.insert(name);
+                                } else {
+                                    seen.insert(name);
+                                }
+                            }
+                        }
+                        ExprKind::Tuple { elts, .. } => {
+                            for name in duplicate_handler_exceptions(checker, type_, elts) {
+                                if seen.contains(&name) {
+                                    duplicates.insert(name);
+                                } else {
+                                    seen.insert(name);
+                                }
+                            }
+                        }
+                        _ => {}
+                    }
+                }
+            }
+        }
+    }
+
+    if checker.settings.enabled.contains(&CheckCode::B025) {
+        for duplicate in duplicates.into_iter().sorted() {
+            checker.add_check(Check::new(
+                CheckKind::DuplicateTryBlockException(duplicate),
+                checker.locate_check(Range::from_located(stmt)),
+            ));
+        }
+    }
+}
--- a/src/plugins/if_tuple.rs
+++ b/src/plugins/if_tuple.rs
@@ -0,0 +1,11 @@
+use rustpython_ast::{Expr, Stmt};
+
+use crate::ast::checkers;
+use crate::ast::types::{CheckLocator, Range};
+use crate::check_ast::Checker;
+
+pub fn if_tuple(checker: &mut Checker, stmt: &Stmt, test: &Expr) {
+    if let Some(check) = checkers::if_tuple(test, checker.locate_check(Range::from_located(stmt))) {
+        checker.add_check(check);
+    }
+}
--- a/src/plugins/invalid_print_syntax.rs
+++ b/src/plugins/invalid_print_syntax.rs
@@ -0,0 +1,23 @@
+use rustpython_ast::{Expr, ExprKind};
+
+use crate::ast::types::{Binding, BindingKind, Range};
+use crate::check_ast::Checker;
+use crate::checks::{Check, CheckKind};
+
+pub fn invalid_print_syntax(checker: &mut Checker, left: &Expr) {
+    if let ExprKind::Name { id, .. } = &left.node {
+        if id == "print" {
+            let scope = checker.current_scope();
+            if let Some(Binding {
+                kind: BindingKind::Builtin,
+                ..
+            }) = scope.values.get("print")
+            {
+                checker.add_check(Check::new(
+                    CheckKind::InvalidPrintSyntax,
+                    Range::from_located(left),
+                ));
+            }
+        }
+    }
+}
--- a/src/plugins/print_call.rs
+++ b/src/plugins/print_call.rs
@@ -0,0 +1,46 @@
+use log::error;
+use rustpython_ast::{Expr, Stmt, StmtKind};
+
+use crate::ast::checkers;
+use crate::autofix::{fixer, fixes};
+use crate::check_ast::Checker;
+use crate::checks::CheckCode;
+
+pub fn print_call(checker: &mut Checker, expr: &Expr, func: &Expr) {
+    if let Some(mut check) = checkers::print_call(
+        expr,
+        func,
+        checker.settings.enabled.contains(&CheckCode::T201),
+        checker.settings.enabled.contains(&CheckCode::T203),
+    ) {
+        if matches!(checker.autofix, fixer::Mode::Generate | fixer::Mode::Apply) {
+            let context = checker.binding_context();
+            if matches!(
+                checker.parents[context.defined_by].node,
+                StmtKind::Expr { .. }
+            ) {
+                let deleted: Vec<&Stmt> = checker
+                    .deletions
+                    .iter()
+                    .map(|index| checker.parents[*index])
+                    .collect();
+
+                match fixes::remove_stmt(
+                    checker.parents[context.defined_by],
+                    context.defined_in.map(|index| checker.parents[index]),
+                    &deleted,
+                ) {
+                    Ok(fix) => {
+                        if fix.content.is_empty() || fix.content == "pass" {
+                            checker.deletions.insert(context.defined_by);
+                        }
+                        check.amend(fix)
+                    }
+                    Err(e) => error!("Failed to fix unused imports: {}", e),
+                }
+            }
+        }
+
+        checker.add_check(check);
+    }
+}
--- a/src/plugins/super_call_with_parameters.rs
+++ b/src/plugins/super_call_with_parameters.rs
@@ -0,0 +1,31 @@
+use rustpython_ast::{Expr, Stmt};
+
+use crate::ast::{checkers, helpers};
+use crate::autofix::{fixer, fixes};
+use crate::check_ast::Checker;
+
+pub fn super_call_with_parameters(
+    checker: &mut Checker,
+    expr: &Expr,
+    func: &Expr,
+    args: &Vec<Expr>,
+) {
+    // Only bother going through the super check at all if we're in a `super` call.
+    // (We check this in `check_super_args` too, so this is just an optimization.)
+    if helpers::is_super_call_with_arguments(func, args) {
+        let scope = checker.current_scope();
+        let parents: Vec<&Stmt> = checker
+            .parent_stack
+            .iter()
+            .map(|index| checker.parents[*index])
+            .collect();
+        if let Some(mut check) = checkers::super_args(scope, &parents, expr, func, args) {
+            if matches!(checker.autofix, fixer::Mode::Generate | fixer::Mode::Apply) {
+                if let Some(fix) = fixes::remove_super_arguments(&mut checker.locator, expr) {
+                    check.amend(fix);
+                }
+            }
+            checker.add_check(check)
+        }
+    }
+}
--- a/src/plugins/type_of_primitive.rs
+++ b/src/plugins/type_of_primitive.rs
@@ -0,0 +1,25 @@
+use rustpython_ast::Expr;
+
+use crate::ast::checkers;
+use crate::ast::types::{CheckLocator, Range};
+use crate::autofix::fixer;
+use crate::check_ast::Checker;
+use crate::checks::{CheckKind, Fix};
+
+pub fn type_of_primitive(checker: &mut Checker, expr: &Expr, func: &Expr, args: &Vec<Expr>) {
+    if let Some(mut check) =
+        checkers::type_of_primitive(func, args, checker.locate_check(Range::from_located(expr)))
+    {
+        if matches!(checker.autofix, fixer::Mode::Generate | fixer::Mode::Apply) {
+            if let CheckKind::TypeOfPrimitive(primitive) = &check.kind {
+                check.amend(Fix {
+                    content: primitive.builtin(),
+                    location: expr.location,
+                    end_location: expr.end_location,
+                    applied: false,
+                });
+            }
+        }
+        checker.add_check(check);
+    }
+}
--- a/src/plugins/unnecessary_abspath.rs
+++ b/src/plugins/unnecessary_abspath.rs
@@ -0,0 +1,23 @@
+use rustpython_ast::Expr;
+
+use crate::ast::checkers;
+use crate::ast::types::{CheckLocator, Range};
+use crate::autofix::fixer;
+use crate::check_ast::Checker;
+use crate::checks::Fix;
+
+pub fn unnecessary_abspath(checker: &mut Checker, expr: &Expr, func: &Expr, args: &Vec<Expr>) {
+    if let Some(mut check) =
+        checkers::unnecessary_abspath(func, args, checker.locate_check(Range::from_located(expr)))
+    {
+        if matches!(checker.autofix, fixer::Mode::Generate | fixer::Mode::Apply) {
+            check.amend(Fix {
+                content: "__file__".to_string(),
+                location: expr.location,
+                end_location: expr.end_location,
+                applied: false,
+            });
+        }
+        checker.add_check(check);
+    }
+}
--- a/src/plugins/use_pep585_annotation.rs
+++ b/src/plugins/use_pep585_annotation.rs
@@ -0,0 +1,26 @@
+use rustpython_ast::Expr;
+
+use crate::ast::types::Range;
+use crate::autofix::fixer;
+use crate::check_ast::Checker;
+use crate::checks::{Check, CheckKind, Fix};
+use crate::python::typing;
+
+pub fn use_pep585_annotation(checker: &mut Checker, expr: &Expr, id: &str) {
+    // TODO(charlie): Verify that the builtin is imported from the `typing` module.
+    if typing::is_pep585_builtin(id) {
+        let mut check = Check::new(
+            CheckKind::UsePEP585Annotation(id.to_string()),
+            Range::from_located(expr),
+        );
+        if matches!(checker.autofix, fixer::Mode::Generate | fixer::Mode::Apply) {
+            check.amend(Fix {
+                content: id.to_lowercase(),
+                location: expr.location,
+                end_location: expr.end_location,
+                applied: false,
+            })
+        }
+        checker.add_check(check);
+    }
+}
--- a/src/plugins/use_pep604_annotation.rs
+++ b/src/plugins/use_pep604_annotation.rs
@@ -0,0 +1,100 @@
+use rustpython_ast::{Constant, Expr, ExprKind, Operator};
+
+use crate::ast::helpers::match_name_or_attr;
+use crate::ast::types::Range;
+use crate::autofix::fixer;
+use crate::check_ast::Checker;
+use crate::checks::{Check, CheckKind, Fix};
+use crate::code_gen::SourceGenerator;
+
+fn optional(expr: &Expr) -> Expr {
+    Expr::new(
+        Default::default(),
+        Default::default(),
+        ExprKind::BinOp {
+            left: Box::new(expr.clone()),
+            op: Operator::BitOr,
+            right: Box::new(Expr::new(
+                Default::default(),
+                Default::default(),
+                ExprKind::Constant {
+                    value: Constant::None,
+                    kind: None,
+                },
+            )),
+        },
+    )
+}
+
+fn union(elts: &[Expr]) -> Expr {
+    if elts.len() == 1 {
+        elts[0].clone()
+    } else {
+        Expr::new(
+            Default::default(),
+            Default::default(),
+            ExprKind::BinOp {
+                left: Box::new(union(&elts[..elts.len() - 1])),
+                op: Operator::BitOr,
+                right: Box::new(elts[elts.len() - 1].clone()),
+            },
+        )
+    }
+}
+
+pub fn use_pep604_annotation(checker: &mut Checker, expr: &Expr, value: &Expr, slice: &Expr) {
+    if match_name_or_attr(value, "Optional") {
+        let mut check = Check::new(CheckKind::UsePEP604Annotation, Range::from_located(expr));
+        if matches!(checker.autofix, fixer::Mode::Generate | fixer::Mode::Apply) {
+            let mut generator = SourceGenerator::new();
+            if let Ok(()) = generator.unparse_expr(&optional(slice), 0) {
+                if let Ok(content) = generator.generate() {
+                    check.amend(Fix {
+                        content,
+                        location: expr.location,
+                        end_location: expr.end_location,
+                        applied: false,
+                    })
+                }
+            }
+        }
+        checker.add_check(check);
+    } else if match_name_or_attr(value, "Union") {
+        let mut check = Check::new(CheckKind::UsePEP604Annotation, Range::from_located(expr));
+        if matches!(checker.autofix, fixer::Mode::Generate | fixer::Mode::Apply) {
+            match &slice.node {
+                ExprKind::Slice { .. } => {
+                    // Invalid type annotation.
+                }
+                ExprKind::Tuple { elts, .. } => {
+                    let mut generator = SourceGenerator::new();
+                    if let Ok(()) = generator.unparse_expr(&union(elts), 0) {
+                        if let Ok(content) = generator.generate() {
+                            check.amend(Fix {
+                                content,
+                                location: expr.location,
+                                end_location: expr.end_location,
+                                applied: false,
+                            })
+                        }
+                    }
+                }
+                _ => {
+                    // Single argument.
+                    let mut generator = SourceGenerator::new();
+                    if let Ok(()) = generator.unparse_expr(slice, 0) {
+                        if let Ok(content) = generator.generate() {
+                            check.amend(Fix {
+                                content,
+                                location: expr.location,
+                                end_location: expr.end_location,
+                                applied: false,
+                            });
+                        }
+                    }
+                }
+            }
+        }
+        checker.add_check(check);
+    }
+}
--- a/src/plugins/useless_metaclass_type.rs
+++ b/src/plugins/useless_metaclass_type.rs
@@ -0,0 +1,44 @@
+use log::error;
+use rustpython_ast::{Expr, Stmt};
+
+use crate::ast::checkers;
+use crate::ast::types::{CheckLocator, Range};
+use crate::autofix::{fixer, fixes};
+use crate::check_ast::Checker;
+
+pub fn useless_metaclass_type(
+    checker: &mut Checker,
+    stmt: &Stmt,
+    value: &Expr,
+    targets: &Vec<Expr>,
+) {
+    if let Some(mut check) = checkers::useless_metaclass_type(
+        targets,
+        value,
+        checker.locate_check(Range::from_located(stmt)),
+    ) {
+        if matches!(checker.autofix, fixer::Mode::Generate | fixer::Mode::Apply) {
+            let context = checker.binding_context();
+            let deleted: Vec<&Stmt> = checker
+                .deletions
+                .iter()
+                .map(|index| checker.parents[*index])
+                .collect();
+
+            match fixes::remove_stmt(
+                checker.parents[context.defined_by],
+                context.defined_in.map(|index| checker.parents[index]),
+                &deleted,
+            ) {
+                Ok(fix) => {
+                    if fix.content.is_empty() || fix.content == "pass" {
+                        checker.deletions.insert(context.defined_by);
+                    }
+                    check.amend(fix)
+                }
+                Err(e) => error!("Failed to fix unused imports: {}", e),
+            }
+        }
+        checker.add_check(check);
+    }
+}
--- a/src/plugins/useless_object_inheritance.rs
+++ b/src/plugins/useless_object_inheritance.rs
@@ -0,0 +1,29 @@
+use rustpython_ast::{Expr, Keyword, Stmt};
+
+use crate::ast::checkers;
+use crate::autofix::{fixer, fixes};
+use crate::check_ast::Checker;
+
+pub fn useless_object_inheritance(
+    checker: &mut Checker,
+    stmt: &Stmt,
+    name: &str,
+    bases: &[Expr],
+    keywords: &[Keyword],
+) {
+    let scope = checker.current_scope();
+    if let Some(mut check) = checkers::useless_object_inheritance(name, bases, scope) {
+        if matches!(checker.autofix, fixer::Mode::Generate | fixer::Mode::Apply) {
+            if let Some(fix) = fixes::remove_class_def_base(
+                &mut checker.locator,
+                &stmt.location,
+                check.location,
+                bases,
+                keywords,
+            ) {
+                check.amend(fix);
+            }
+        }
+        checker.add_check(check);
+    }
+}
--- a/src/pyproject.rs
+++ b/src/pyproject.rs
@@ -9,6 +9,7 @@ use serde::{Deserialize, Deserializer};

 use crate::checks::CheckCode;
 use crate::fs;
+use crate::settings::PythonVersion;

 pub fn load_config(pyproject: &Option<PathBuf>) -> Result<Config> {
    match pyproject {
@@ -29,11 +30,19 @@ pub fn load_config(pyproject: &Option<PathBuf>) -> Result<Config> {
 pub struct Config {
    pub line_length: Option<usize>,
    pub exclude: Option<Vec<String>>,
-    pub extend_exclude: Option<Vec<String>>,
+    #[serde(default)]
+    pub extend_exclude: Vec<String>,
    pub select: Option<Vec<CheckCode>>,
-    pub ignore: Option<Vec<CheckCode>>,
-    pub per_file_ignores: Option<Vec<StrCheckCodePair>>,
+    #[serde(default)]
+    pub extend_select: Vec<CheckCode>,
+    #[serde(default)]
+    pub ignore: Vec<CheckCode>,
+    #[serde(default)]
+    pub extend_ignore: Vec<CheckCode>,
+    #[serde(default)]
+    pub per_file_ignores: Vec<StrCheckCodePair>,
    pub dummy_variable_rgx: Option<String>,
+    pub target_version: Option<PythonVersion>,
 }

 #[derive(Clone, Debug, PartialEq, Eq)]
@@ -145,12 +154,13 @@ mod tests {

    use anyhow::Result;

-    use super::StrCheckCodePair;
    use crate::checks::CheckCode;
    use crate::pyproject::{
        find_project_root, find_pyproject_toml, parse_pyproject_toml, Config, PyProject, Tools,
    };

+    use super::StrCheckCodePair;
+
    #[test]
    fn deserialize() -> Result<()> {
        let pyproject: PyProject = toml::from_str(r#""#)?;
@@ -175,11 +185,14 @@ mod tests {
                ruff: Some(Config {
                    line_length: None,
                    exclude: None,
-                    extend_exclude: None,
+                    extend_exclude: vec![],
                    select: None,
-                    ignore: None,
-                    per_file_ignores: None,
+                    extend_select: vec![],
+                    ignore: vec![],
+                    extend_ignore: vec![],
+                    per_file_ignores: vec![],
                    dummy_variable_rgx: None,
+                    target_version: None,
                })
            })
        );
@@ -197,11 +210,14 @@ line-length = 79
                ruff: Some(Config {
                    line_length: Some(79),
                    exclude: None,
-                    extend_exclude: None,
+                    extend_exclude: vec![],
                    select: None,
-                    ignore: None,
-                    per_file_ignores: None,
+                    extend_select: vec![],
+                    ignore: vec![],
+                    extend_ignore: vec![],
+                    per_file_ignores: vec![],
                    dummy_variable_rgx: None,
+                    target_version: None,
                })
            })
        );
@@ -219,11 +235,14 @@ exclude = ["foo.py"]
                ruff: Some(Config {
                    line_length: None,
                    exclude: Some(vec!["foo.py".to_string()]),
-                    extend_exclude: None,
+                    extend_exclude: vec![],
                    select: None,
-                    ignore: None,
-                    per_file_ignores: None,
+                    extend_select: vec![],
+                    ignore: vec![],
+                    extend_ignore: vec![],
+                    per_file_ignores: vec![],
                    dummy_variable_rgx: None,
+                    target_version: None,
                })
            })
        );
@@ -241,11 +260,14 @@ select = ["E501"]
                ruff: Some(Config {
                    line_length: None,
                    exclude: None,
-                    extend_exclude: None,
+                    extend_exclude: vec![],
                    select: Some(vec![CheckCode::E501]),
-                    ignore: None,
-                    per_file_ignores: None,
+                    extend_select: vec![],
+                    ignore: vec![],
+                    extend_ignore: vec![],
+                    per_file_ignores: vec![],
                    dummy_variable_rgx: None,
+                    target_version: None,
                })
            })
        );
@@ -254,6 +276,7 @@ select = ["E501"]
            r#"
 [tool.black]
 [tool.ruff]
+extend-select = ["M001"]
 ignore = ["E501"]
 "#,
        )?;
@@ -263,11 +286,14 @@ ignore = ["E501"]
                ruff: Some(Config {
                    line_length: None,
                    exclude: None,
-                    extend_exclude: None,
+                    extend_exclude: vec![],
                    select: None,
-                    ignore: Some(vec![CheckCode::E501]),
-                    per_file_ignores: None,
+                    extend_select: vec![CheckCode::M001],
+                    ignore: vec![CheckCode::E501],
+                    extend_ignore: vec![],
+                    per_file_ignores: vec![],
                    dummy_variable_rgx: None,
+                    target_version: None,
                })
            })
        );
@@ -325,15 +351,18 @@ other-attribute = 1
            Config {
                line_length: Some(88),
                exclude: None,
-                extend_exclude: Some(vec![
+                extend_exclude: vec![
                    "excluded.py".to_string(),
                    "migrations".to_string(),
                    "directory/also_excluded.py".to_string(),
-                ]),
+                ],
                select: None,
-                ignore: None,
-                per_file_ignores: None,
+                extend_select: vec![],
+                ignore: vec![],
+                extend_ignore: vec![],
+                per_file_ignores: vec![],
                dummy_variable_rgx: None,
+                target_version: None,
            }
        );

--- a/src/python/typing.rs
+++ b/src/python/typing.rs
@@ -7,6 +7,7 @@ static ANNOTATED_SUBSCRIPTS: Lazy<BTreeSet<&'static str>> = Lazy::new(|| {
        "AbstractAsyncContextManager",
        "AbstractContextManager",
        "AbstractSet",
+        // "Annotated",
        "AsyncContextManager",
        "AsyncGenerator",
        "AsyncIterable",
@@ -87,3 +88,14 @@ static ANNOTATED_SUBSCRIPTS: Lazy<BTreeSet<&'static str>> = Lazy::new(|| {
 pub fn is_annotated_subscript(name: &str) -> bool {
    ANNOTATED_SUBSCRIPTS.contains(name)
 }
+
+pub fn is_pep593_annotated_subscript(name: &str) -> bool {
+    name == "Annotated"
+}
+
+static PEP_585_BUILTINS: Lazy<BTreeSet<&'static str>> =
+    Lazy::new(|| BTreeSet::from(["Dict", "FrozenSet", "List", "Set", "Tuple", "Type"]));
+
+pub fn is_pep585_builtin(name: &str) -> bool {
+    PEP_585_BUILTINS.contains(name)
+}
--- a/src/settings.rs
+++ b/src/settings.rs
@@ -1,16 +1,50 @@
 use std::collections::BTreeSet;
 use std::hash::{Hash, Hasher};
 use std::path::{Path, PathBuf};
+use std::str::FromStr;

 use anyhow::{anyhow, Result};
 use glob::Pattern;
 use once_cell::sync::Lazy;
 use regex::Regex;
+use serde::{Deserialize, Serialize};

 use crate::checks::{CheckCode, DEFAULT_CHECK_CODES};
 use crate::fs;
 use crate::pyproject::{load_config, StrCheckCodePair};

+#[derive(Clone, Debug, PartialOrd, PartialEq, Eq, Serialize, Deserialize)]
+pub enum PythonVersion {
+    Py33,
+    Py34,
+    Py35,
+    Py36,
+    Py37,
+    Py38,
+    Py39,
+    Py310,
+    Py311,
+}
+
+impl FromStr for PythonVersion {
+    type Err = anyhow::Error;
+
+    fn from_str(string: &str) -> Result<Self, Self::Err> {
+        match string {
+            "py33" => Ok(PythonVersion::Py33),
+            "py34" => Ok(PythonVersion::Py34),
+            "py35" => Ok(PythonVersion::Py35),
+            "py36" => Ok(PythonVersion::Py36),
+            "py37" => Ok(PythonVersion::Py37),
+            "py38" => Ok(PythonVersion::Py38),
+            "py39" => Ok(PythonVersion::Py39),
+            "py310" => Ok(PythonVersion::Py310),
+            "py311" => Ok(PythonVersion::Py311),
+            _ => Err(anyhow!("Unknown version: {}", string)),
+        }
+    }
+}
+
 #[derive(Debug, Clone, Hash)]
 pub enum FilePattern {
    Simple(&'static str),
@@ -51,56 +85,17 @@ impl PerFileIgnore {
 }

 #[derive(Debug)]
-pub struct Settings {
-    pub pyproject: Option<PathBuf>,
-    pub project_root: Option<PathBuf>,
-    pub line_length: usize,
+pub struct RawSettings {
+    pub dummy_variable_rgx: Regex,
    pub exclude: Vec<FilePattern>,
    pub extend_exclude: Vec<FilePattern>,
-    pub select: BTreeSet<CheckCode>,
+    pub extend_ignore: Vec<CheckCode>,
+    pub extend_select: Vec<CheckCode>,
+    pub ignore: Vec<CheckCode>,
+    pub line_length: usize,
    pub per_file_ignores: Vec<PerFileIgnore>,
-    pub dummy_variable_rgx: Regex,
-}
-
-impl Settings {
-    pub fn for_rule(check_code: CheckCode) -> Self {
-        Self {
-            pyproject: None,
-            project_root: None,
-            line_length: 88,
-            exclude: vec![],
-            extend_exclude: vec![],
-            select: BTreeSet::from([check_code]),
-            per_file_ignores: vec![],
-            dummy_variable_rgx: DEFAULT_DUMMY_VARIABLE_RGX.clone(),
-        }
-    }
-
-    pub fn for_rules(check_codes: Vec<CheckCode>) -> Self {
-        Self {
-            pyproject: None,
-            project_root: None,
-            line_length: 88,
-            exclude: vec![],
-            extend_exclude: vec![],
-            select: BTreeSet::from_iter(check_codes),
-            per_file_ignores: vec![],
-            dummy_variable_rgx: DEFAULT_DUMMY_VARIABLE_RGX.clone(),
-        }
-    }
-}
-
-impl Hash for Settings {
-    fn hash<H: Hasher>(&self, state: &mut H) {
-        self.line_length.hash(state);
-        self.dummy_variable_rgx.as_str().hash(state);
-        for value in self.select.iter() {
-            value.hash(state);
-        }
-        for value in self.per_file_ignores.iter() {
-            value.hash(state);
-        }
-    }
+    pub select: Vec<CheckCode>,
+    pub target_version: PythonVersion,
 }

 static DEFAULT_EXCLUDE: Lazy<Vec<FilePattern>> = Lazy::new(|| {
@@ -130,73 +125,117 @@ static DEFAULT_EXCLUDE: Lazy<Vec<FilePattern>> = Lazy::new(|| {
 static DEFAULT_DUMMY_VARIABLE_RGX: Lazy<Regex> =
    Lazy::new(|| Regex::new("^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$").unwrap());

-impl Settings {
+impl RawSettings {
    pub fn from_pyproject(
-        pyproject: Option<PathBuf>,
-        project_root: Option<PathBuf>,
+        pyproject: &Option<PathBuf>,
+        project_root: &Option<PathBuf>,
    ) -> Result<Self> {
-        let config = load_config(&pyproject)?;
-        let mut settings = Settings {
-            line_length: config.line_length.unwrap_or(88),
-            exclude: config
-                .exclude
-                .map(|paths| {
-                    paths
-                        .iter()
-                        .map(|path| FilePattern::from_user(path, &project_root))
-                        .collect()
-                })
-                .unwrap_or_else(|| DEFAULT_EXCLUDE.clone()),
-            extend_exclude: config
-                .extend_exclude
-                .map(|paths| {
-                    paths
-                        .iter()
-                        .map(|path| FilePattern::from_user(path, &project_root))
-                        .collect()
-                })
-                .unwrap_or_default(),
-            select: if let Some(select) = config.select {
-                BTreeSet::from_iter(select)
-            } else {
-                BTreeSet::from_iter(DEFAULT_CHECK_CODES)
-            },
-            per_file_ignores: config
-                .per_file_ignores
-                .map(|ignore_strings| {
-                    ignore_strings
-                        .into_iter()
-                        .map(|pair| PerFileIgnore::new(pair, &project_root))
-                        .collect()
-                })
-                .unwrap_or_default(),
+        let config = load_config(pyproject)?;
+        Ok(RawSettings {
            dummy_variable_rgx: match config.dummy_variable_rgx {
                Some(pattern) => Regex::new(&pattern)
                    .map_err(|e| anyhow!("Invalid dummy-variable-rgx value: {e}"))?,
                None => DEFAULT_DUMMY_VARIABLE_RGX.clone(),
            },
-            pyproject,
-            project_root,
-        };
-        if let Some(ignore) = &config.ignore {
-            settings.ignore(ignore);
+            target_version: config.target_version.unwrap_or(PythonVersion::Py310),
+            exclude: config
+                .exclude
+                .map(|paths| {
+                    paths
+                        .iter()
+                        .map(|path| FilePattern::from_user(path, project_root))
+                        .collect()
+                })
+                .unwrap_or_else(|| DEFAULT_EXCLUDE.clone()),
+            extend_exclude: config
+                .extend_exclude
+                .iter()
+                .map(|path| FilePattern::from_user(path, project_root))
+                .collect(),
+            extend_ignore: config.extend_ignore,
+            select: config
+                .select
+                .unwrap_or_else(|| DEFAULT_CHECK_CODES.to_vec()),
+            extend_select: config.extend_select,
+            ignore: config.ignore,
+            line_length: config.line_length.unwrap_or(88),
+            per_file_ignores: config
+                .per_file_ignores
+                .into_iter()
+                .map(|pair| PerFileIgnore::new(pair, project_root))
+                .collect(),
+        })
+    }
+}
+
+#[derive(Debug)]
+pub struct Settings {
+    pub dummy_variable_rgx: Regex,
+    pub enabled: BTreeSet<CheckCode>,
+    pub exclude: Vec<FilePattern>,
+    pub extend_exclude: Vec<FilePattern>,
+    pub line_length: usize,
+    pub per_file_ignores: Vec<PerFileIgnore>,
+    pub target_version: PythonVersion,
+}
+
+impl Settings {
+    pub fn from_raw(settings: RawSettings) -> Self {
+        // Materialize the set of enabled CheckCodes.
+        let mut enabled: BTreeSet<CheckCode> = BTreeSet::new();
+        enabled.extend(settings.select);
+        enabled.extend(settings.extend_select);
+        for code in &settings.ignore {
+            enabled.remove(code);
        }
-        Ok(settings)
-    }
-
-    pub fn clear(&mut self) {
-        self.select.clear();
-    }
-
-    pub fn select(&mut self, codes: Vec<CheckCode>) {
-        for code in codes {
-            self.select.insert(code);
+        for code in &settings.extend_ignore {
+            enabled.remove(code);
+        }
+        Self {
+            dummy_variable_rgx: settings.dummy_variable_rgx,
+            enabled,
+            exclude: settings.exclude,
+            extend_exclude: settings.extend_exclude,
+            line_length: settings.line_length,
+            per_file_ignores: settings.per_file_ignores,
+            target_version: PythonVersion::Py310,
        }
    }

-    pub fn ignore(&mut self, codes: &[CheckCode]) {
-        for code in codes {
-            self.select.remove(code);
+    pub fn for_rule(check_code: CheckCode) -> Self {
+        Self {
+            dummy_variable_rgx: DEFAULT_DUMMY_VARIABLE_RGX.clone(),
+            enabled: BTreeSet::from([check_code]),
+            exclude: vec![],
+            extend_exclude: vec![],
+            line_length: 88,
+            per_file_ignores: vec![],
+            target_version: PythonVersion::Py310,
+        }
+    }
+
+    pub fn for_rules(check_codes: Vec<CheckCode>) -> Self {
+        Self {
+            dummy_variable_rgx: DEFAULT_DUMMY_VARIABLE_RGX.clone(),
+            enabled: BTreeSet::from_iter(check_codes),
+            exclude: vec![],
+            extend_exclude: vec![],
+            line_length: 88,
+            per_file_ignores: vec![],
+            target_version: PythonVersion::Py310,
+        }
+    }
+}
+
+impl Hash for Settings {
+    fn hash<H: Hasher>(&self, state: &mut H) {
+        self.line_length.hash(state);
+        self.dummy_variable_rgx.as_str().hash(state);
+        for value in self.enabled.iter() {
+            value.hash(state);
+        }
+        for value in self.per_file_ignores.iter() {
+            value.hash(state);
        }
    }
 }
@@ -227,22 +266,28 @@ impl Exclusion {
 /// Struct to render user-facing Settings.
 #[derive(Debug)]
 pub struct CurrentSettings {
-    pub pyproject: Option<PathBuf>,
-    pub project_root: Option<PathBuf>,
-    pub line_length: usize,
+    pub dummy_variable_rgx: Regex,
    pub exclude: Vec<Exclusion>,
    pub extend_exclude: Vec<Exclusion>,
-    pub select: BTreeSet<CheckCode>,
+    pub extend_ignore: Vec<CheckCode>,
+    pub extend_select: Vec<CheckCode>,
+    pub ignore: Vec<CheckCode>,
+    pub line_length: usize,
    pub per_file_ignores: Vec<PerFileIgnore>,
-    pub dummy_variable_rgx: Regex,
+    pub select: Vec<CheckCode>,
+    pub target_version: PythonVersion,
+    pub project_root: Option<PathBuf>,
+    pub pyproject: Option<PathBuf>,
 }

 impl CurrentSettings {
-    pub fn from_settings(settings: Settings) -> Self {
+    pub fn from_settings(
+        settings: RawSettings,
+        project_root: Option<PathBuf>,
+        pyproject: Option<PathBuf>,
+    ) -> Self {
        Self {
-            pyproject: settings.pyproject,
-            project_root: settings.project_root,
-            line_length: settings.line_length,
+            dummy_variable_rgx: settings.dummy_variable_rgx,
            exclude: settings
                .exclude
                .into_iter()
@@ -253,9 +298,15 @@ impl CurrentSettings {
                .into_iter()
                .map(Exclusion::from_file_pattern)
                .collect(),
-            select: settings.select,
+            extend_ignore: settings.extend_ignore,
+            extend_select: settings.extend_select,
+            ignore: settings.ignore,
+            line_length: settings.line_length,
            per_file_ignores: settings.per_file_ignores,
-            dummy_variable_rgx: settings.dummy_variable_rgx,
+            select: settings.select,
+            target_version: settings.target_version,
+            project_root,
+            pyproject,
        }
    }
 }
--- a/src/snapshots/rufflintertests__b011.snap
+++ b/src/snapshots/rufflintertests__b011.snap
@@ -0,0 +1,37 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: DoNotAssertFalse
+  location:
+    row: 8
+    column: 8
+  end_location:
+    row: 8
+    column: 13
+  fix:
+    content: raise AssertionError()
+    location:
+      row: 8
+      column: 1
+    end_location:
+      row: 8
+      column: 13
+    applied: false
+- kind: DoNotAssertFalse
+  location:
+    row: 10
+    column: 8
+  end_location:
+    row: 10
+    column: 13
+  fix:
+    content: "raise AssertionError(\"message\")"
+    location:
+      row: 10
+      column: 1
+    end_location:
+      row: 10
+      column: 24
+    applied: false
+
--- a/src/snapshots/rufflintertests__b014.snap
+++ b/src/snapshots/rufflintertests__b014.snap
@@ -0,0 +1,59 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    DuplicateHandlerException:
+      - OSError
+  location:
+    row: 17
+    column: 9
+  end_location:
+    row: 17
+    column: 25
+  fix:
+    content: "OSError,"
+    location:
+      row: 17
+      column: 9
+    end_location:
+      row: 17
+      column: 25
+    applied: false
+- kind:
+    DuplicateHandlerException:
+      - MyError
+  location:
+    row: 28
+    column: 9
+  end_location:
+    row: 28
+    column: 25
+  fix:
+    content: "MyError,"
+    location:
+      row: 28
+      column: 9
+    end_location:
+      row: 28
+      column: 25
+    applied: false
+- kind:
+    DuplicateHandlerException:
+      - re.error
+  location:
+    row: 49
+    column: 9
+  end_location:
+    row: 49
+    column: 27
+  fix:
+    content: "re.error,"
+    location:
+      row: 49
+      column: 9
+    end_location:
+      row: 49
+      column: 27
+    applied: false
+
--- a/src/snapshots/rufflintertests__b025.snap
+++ b/src/snapshots/rufflintertests__b025.snap
@@ -0,0 +1,41 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    DuplicateTryBlockException: ValueError
+  location:
+    row: 15
+    column: 1
+  end_location:
+    row: 22
+    column: 1
+  fix: ~
+- kind:
+    DuplicateTryBlockException: pickle.PickleError
+  location:
+    row: 22
+    column: 1
+  end_location:
+    row: 31
+    column: 1
+  fix: ~
+- kind:
+    DuplicateTryBlockException: TypeError
+  location:
+    row: 31
+    column: 1
+  end_location:
+    row: 39
+    column: 1
+  fix: ~
+- kind:
+    DuplicateTryBlockException: ValueError
+  location:
+    row: 31
+    column: 1
+  end_location:
+    row: 39
+    column: 1
+  fix: ~
+
--- a/src/snapshots/rufflintertests__c400.snap
+++ b/src/snapshots/rufflintertests__c400.snap
@@ -0,0 +1,13 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: UnnecessaryGeneratorList
+  location:
+    row: 1
+    column: 5
+  end_location:
+    row: 1
+    column: 30
+  fix: ~
+
--- a/src/snapshots/rufflintertests__c401.snap
+++ b/src/snapshots/rufflintertests__c401.snap
@@ -0,0 +1,13 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: UnnecessaryGeneratorList
+  location:
+    row: 1
+    column: 5
+  end_location:
+    row: 1
+    column: 29
+  fix: ~
+
--- a/src/snapshots/rufflintertests__c402.snap
+++ b/src/snapshots/rufflintertests__c402.snap
@@ -0,0 +1,13 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: UnnecessaryListComprehensionDict
+  location:
+    row: 1
+    column: 5
+  end_location:
+    row: 1
+    column: 35
+  fix: ~
+
--- a/src/snapshots/rufflintertests__c403.snap
+++ b/src/snapshots/rufflintertests__c403.snap
@@ -0,0 +1,13 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: UnnecessaryListComprehensionSet
+  location:
+    row: 1
+    column: 5
+  end_location:
+    row: 1
+    column: 31
+  fix: ~
+
--- a/src/snapshots/rufflintertests__c404.snap
+++ b/src/snapshots/rufflintertests__c404.snap
@@ -0,0 +1,13 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: UnnecessaryListComprehensionDict
+  location:
+    row: 1
+    column: 5
+  end_location:
+    row: 1
+    column: 37
+  fix: ~
+
--- a/src/snapshots/rufflintertests__c405.snap
+++ b/src/snapshots/rufflintertests__c405.snap
@@ -0,0 +1,41 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    UnnecessaryLiteralSet: list
+  location:
+    row: 1
+    column: 6
+  end_location:
+    row: 1
+    column: 17
+  fix: ~
+- kind:
+    UnnecessaryLiteralSet: tuple
+  location:
+    row: 2
+    column: 6
+  end_location:
+    row: 2
+    column: 17
+  fix: ~
+- kind:
+    UnnecessaryLiteralSet: list
+  location:
+    row: 3
+    column: 6
+  end_location:
+    row: 3
+    column: 13
+  fix: ~
+- kind:
+    UnnecessaryLiteralSet: tuple
+  location:
+    row: 4
+    column: 6
+  end_location:
+    row: 4
+    column: 13
+  fix: ~
+
--- a/src/snapshots/rufflintertests__c406.snap
+++ b/src/snapshots/rufflintertests__c406.snap
@@ -0,0 +1,41 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    UnnecessaryLiteralDict: list
+  location:
+    row: 1
+    column: 6
+  end_location:
+    row: 1
+    column: 20
+  fix: ~
+- kind:
+    UnnecessaryLiteralDict: tuple
+  location:
+    row: 2
+    column: 6
+  end_location:
+    row: 2
+    column: 21
+  fix: ~
+- kind:
+    UnnecessaryLiteralDict: list
+  location:
+    row: 3
+    column: 6
+  end_location:
+    row: 3
+    column: 14
+  fix: ~
+- kind:
+    UnnecessaryLiteralDict: tuple
+  location:
+    row: 4
+    column: 6
+  end_location:
+    row: 4
+    column: 14
+  fix: ~
+
--- a/src/snapshots/rufflintertests__c408.snap
+++ b/src/snapshots/rufflintertests__c408.snap
@@ -0,0 +1,41 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    UnnecessaryCollectionCall: tuple
+  location:
+    row: 1
+    column: 5
+  end_location:
+    row: 1
+    column: 12
+  fix: ~
+- kind:
+    UnnecessaryCollectionCall: list
+  location:
+    row: 2
+    column: 5
+  end_location:
+    row: 2
+    column: 11
+  fix: ~
+- kind:
+    UnnecessaryCollectionCall: dict
+  location:
+    row: 3
+    column: 6
+  end_location:
+    row: 3
+    column: 12
+  fix: ~
+- kind:
+    UnnecessaryCollectionCall: dict
+  location:
+    row: 4
+    column: 6
+  end_location:
+    row: 4
+    column: 15
+  fix: ~
+
--- a/src/snapshots/rufflintertests__c409.snap
+++ b/src/snapshots/rufflintertests__c409.snap
@@ -0,0 +1,32 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    UnnecessaryLiteralWithinTupleCall: list
+  location:
+    row: 1
+    column: 6
+  end_location:
+    row: 1
+    column: 19
+  fix: ~
+- kind:
+    UnnecessaryLiteralWithinTupleCall: tuple
+  location:
+    row: 2
+    column: 6
+  end_location:
+    row: 2
+    column: 19
+  fix: ~
+- kind:
+    UnnecessaryLiteralWithinTupleCall: list
+  location:
+    row: 3
+    column: 6
+  end_location:
+    row: 3
+    column: 15
+  fix: ~
+
--- a/src/snapshots/rufflintertests__c410.snap
+++ b/src/snapshots/rufflintertests__c410.snap
@@ -0,0 +1,41 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    UnnecessaryLiteralWithinListCall: list
+  location:
+    row: 1
+    column: 6
+  end_location:
+    row: 1
+    column: 18
+  fix: ~
+- kind:
+    UnnecessaryLiteralWithinListCall: tuple
+  location:
+    row: 2
+    column: 6
+  end_location:
+    row: 2
+    column: 18
+  fix: ~
+- kind:
+    UnnecessaryLiteralWithinListCall: list
+  location:
+    row: 3
+    column: 6
+  end_location:
+    row: 3
+    column: 14
+  fix: ~
+- kind:
+    UnnecessaryLiteralWithinListCall: tuple
+  location:
+    row: 4
+    column: 6
+  end_location:
+    row: 4
+    column: 14
+  fix: ~
+
--- a/src/snapshots/rufflintertests__c415.snap
+++ b/src/snapshots/rufflintertests__c415.snap
@@ -0,0 +1,41 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    UnnecessarySubscriptReversal: set
+  location:
+    row: 2
+    column: 5
+  end_location:
+    row: 2
+    column: 19
+  fix: ~
+- kind:
+    UnnecessarySubscriptReversal: reversed
+  location:
+    row: 3
+    column: 5
+  end_location:
+    row: 3
+    column: 24
+  fix: ~
+- kind:
+    UnnecessarySubscriptReversal: sorted
+  location:
+    row: 4
+    column: 5
+  end_location:
+    row: 4
+    column: 22
+  fix: ~
+- kind:
+    UnnecessarySubscriptReversal: sorted
+  location:
+    row: 5
+    column: 5
+  end_location:
+    row: 5
+    column: 36
+  fix: ~
+
--- a/src/snapshots/rufflintertests__d200.snap
+++ b/src/snapshots/rufflintertests__d200.snap
@@ -0,0 +1,13 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: OneLinerDocstring
+  location:
+    row: 124
+    column: 6
+  end_location:
+    row: 126
+    column: 8
+  fix: ~
+
--- a/src/snapshots/rufflintertests__d205.snap
+++ b/src/snapshots/rufflintertests__d205.snap
@@ -0,0 +1,21 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: BlankLineAfterSummary
+  location:
+    row: 195
+    column: 6
+  end_location:
+    row: 198
+    column: 8
+  fix: ~
+- kind: BlankLineAfterSummary
+  location:
+    row: 205
+    column: 6
+  end_location:
+    row: 210
+    column: 8
+  fix: ~
+
--- a/src/snapshots/rufflintertests__d209.snap
+++ b/src/snapshots/rufflintertests__d209.snap
@@ -0,0 +1,13 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: NewLineAfterLastParagraph
+  location:
+    row: 276
+    column: 6
+  end_location:
+    row: 278
+    column: 20
+  fix: ~
+
--- a/src/snapshots/rufflintertests__d210.snap
+++ b/src/snapshots/rufflintertests__d210.snap
@@ -0,0 +1,29 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: NoSurroundingWhitespace
+  location:
+    row: 283
+    column: 6
+  end_location:
+    row: 283
+    column: 34
+  fix: ~
+- kind: NoSurroundingWhitespace
+  location:
+    row: 288
+    column: 6
+  end_location:
+    row: 288
+    column: 38
+  fix: ~
+- kind: NoSurroundingWhitespace
+  location:
+    row: 294
+    column: 6
+  end_location:
+    row: 297
+    column: 8
+  fix: ~
+
--- a/src/snapshots/rufflintertests__d400.snap
+++ b/src/snapshots/rufflintertests__d400.snap
@@ -0,0 +1,141 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 69
+    column: 6
+  end_location:
+    row: 69
+    column: 12
+  fix: ~
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 124
+    column: 6
+  end_location:
+    row: 126
+    column: 8
+  fix: ~
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 283
+    column: 6
+  end_location:
+    row: 283
+    column: 34
+  fix: ~
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 288
+    column: 6
+  end_location:
+    row: 288
+    column: 38
+  fix: ~
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 350
+    column: 6
+  end_location:
+    row: 350
+    column: 18
+  fix: ~
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 401
+    column: 26
+  end_location:
+    row: 401
+    column: 40
+  fix: ~
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 405
+    column: 6
+  end_location:
+    row: 405
+    column: 25
+  fix: ~
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 411
+    column: 6
+  end_location:
+    row: 411
+    column: 25
+  fix: ~
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 417
+    column: 36
+  end_location:
+    row: 417
+    column: 50
+  fix: ~
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 424
+    column: 50
+  end_location:
+    row: 424
+    column: 64
+  fix: ~
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 465
+    column: 6
+  end_location:
+    row: 465
+    column: 25
+  fix: ~
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 470
+    column: 6
+  end_location:
+    row: 470
+    column: 25
+  fix: ~
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 475
+    column: 6
+  end_location:
+    row: 475
+    column: 25
+  fix: ~
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 482
+    column: 6
+  end_location:
+    row: 482
+    column: 25
+  fix: ~
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 504
+    column: 6
+  end_location:
+    row: 504
+    column: 35
+  fix: ~
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 509
+    column: 6
+  end_location:
+    row: 509
+    column: 34
+  fix: ~
+- kind: DocstringEndsInNonPeriod
+  location:
+    row: 515
+    column: 6
+  end_location:
+    row: 515
+    column: 33
+  fix: ~
+
--- a/src/snapshots/rufflintertests__d419.snap
+++ b/src/snapshots/rufflintertests__d419.snap
@@ -0,0 +1,29 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: EmptyDocstring
+  location:
+    row: 19
+    column: 10
+  end_location:
+    row: 19
+    column: 15
+  fix: ~
+- kind: EmptyDocstring
+  location:
+    row: 69
+    column: 6
+  end_location:
+    row: 69
+    column: 12
+  fix: ~
+- kind: EmptyDocstring
+  location:
+    row: 75
+    column: 10
+  end_location:
+    row: 75
+    column: 11
+  fix: ~
+
--- a/src/snapshots/rufflintertests__f401.snap
+++ b/src/snapshots/rufflintertests__f401.snap
@@ -3,7 +3,8 @@ source: src/linter.rs
 expression: checks
 ---
 - kind:
-    UnusedImport: functools
+    UnusedImport:
+      - functools
  location:
    row: 2
    column: 1
@@ -20,7 +21,8 @@ expression: checks
      column: 21
    applied: false
 - kind:
-    UnusedImport: collections.OrderedDict
+    UnusedImport:
+      - collections.OrderedDict
  location:
    row: 4
    column: 1
@@ -37,7 +39,8 @@ expression: checks
      column: 2
    applied: false
 - kind:
-    UnusedImport: logging.handlers
+    UnusedImport:
+      - logging.handlers
  location:
    row: 12
    column: 1
@@ -54,7 +57,8 @@ expression: checks
      column: 24
    applied: false
 - kind:
-    UnusedImport: shelve
+    UnusedImport:
+      - shelve
  location:
    row: 33
    column: 5
@@ -71,7 +75,8 @@ expression: checks
      column: 1
    applied: false
 - kind:
-    UnusedImport: importlib
+    UnusedImport:
+      - importlib
  location:
    row: 34
    column: 5
@@ -79,16 +84,17 @@ expression: checks
    row: 34
    column: 21
  fix:
-    content: pass
+    content: ""
    location:
      row: 34
-      column: 5
+      column: 1
    end_location:
-      row: 34
-      column: 21
+      row: 35
+      column: 1
    applied: false
 - kind:
-    UnusedImport: pathlib
+    UnusedImport:
+      - pathlib
  location:
    row: 38
    column: 5
@@ -105,7 +111,8 @@ expression: checks
      column: 1
    applied: false
 - kind:
-    UnusedImport: pickle
+    UnusedImport:
+      - pickle
  location:
    row: 53
    column: 9
--- a/src/snapshots/rufflintertests__f401_0.snap
+++ b/src/snapshots/rufflintertests__f401_0.snap
@@ -0,0 +1,131 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    UnusedImport:
+      - functools
+  location:
+    row: 2
+    column: 1
+  end_location:
+    row: 2
+    column: 21
+  fix:
+    content: import os
+    location:
+      row: 2
+      column: 1
+    end_location:
+      row: 2
+      column: 21
+    applied: false
+- kind:
+    UnusedImport:
+      - collections.OrderedDict
+  location:
+    row: 4
+    column: 1
+  end_location:
+    row: 8
+    column: 2
+  fix:
+    content: "from collections import (\n    Counter,\n    namedtuple,\n)"
+    location:
+      row: 4
+      column: 1
+    end_location:
+      row: 8
+      column: 2
+    applied: false
+- kind:
+    UnusedImport:
+      - logging.handlers
+  location:
+    row: 12
+    column: 1
+  end_location:
+    row: 12
+    column: 24
+  fix:
+    content: import logging.handlers
+    location:
+      row: 12
+      column: 1
+    end_location:
+      row: 12
+      column: 24
+    applied: false
+- kind:
+    UnusedImport:
+      - shelve
+  location:
+    row: 33
+    column: 5
+  end_location:
+    row: 33
+    column: 18
+  fix:
+    content: ""
+    location:
+      row: 33
+      column: 1
+    end_location:
+      row: 34
+      column: 1
+    applied: false
+- kind:
+    UnusedImport:
+      - importlib
+  location:
+    row: 34
+    column: 5
+  end_location:
+    row: 34
+    column: 21
+  fix:
+    content: ""
+    location:
+      row: 34
+      column: 1
+    end_location:
+      row: 35
+      column: 1
+    applied: false
+- kind:
+    UnusedImport:
+      - pathlib
+  location:
+    row: 38
+    column: 5
+  end_location:
+    row: 38
+    column: 19
+  fix:
+    content: ""
+    location:
+      row: 38
+      column: 1
+    end_location:
+      row: 39
+      column: 1
+    applied: false
+- kind:
+    UnusedImport:
+      - pickle
+  location:
+    row: 53
+    column: 9
+  end_location:
+    row: 53
+    column: 22
+  fix:
+    content: pass
+    location:
+      row: 53
+      column: 9
+    end_location:
+      row: 53
+      column: 22
+    applied: false
+
--- a/src/snapshots/rufflintertests__f401_1.snap
+++ b/src/snapshots/rufflintertests__f401_1.snap
@@ -0,0 +1,6 @@
+---
+source: src/linter.rs
+expression: checks
+---
+[]
+
--- a/src/snapshots/rufflintertests__f401_2.snap
+++ b/src/snapshots/rufflintertests__f401_2.snap
@@ -0,0 +1,6 @@
+---
+source: src/linter.rs
+expression: checks
+---
+[]
+
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Charlie Marsh	4730911b25	Bump version to 0.0.68	2022-10-10 16:50:09 -04:00
Charlie Marsh	4e9fb9907a	Implement D205, D209, and D210 (#398 )	2022-10-10 16:49:51 -04:00
Charlie Marsh	b8dce8922d	Implement D200 (OneLinerDocstring) (#397 )	2022-10-10 16:07:51 -04:00
Charlie Marsh	30877127bc	Implement D400 (DocstringEndsInNonPeriod) (#396 )	2022-10-10 15:35:23 -04:00
Charlie Marsh	8b66bbdc9b	Regenerate rules table	2022-10-10 15:18:18 -04:00
Charlie Marsh	71d3a84b14	Implement D410 (EmptyDocstring) (#395 )	2022-10-10 15:15:38 -04:00
Charlie Marsh	323a5c857c	Implement docstring tracking (#394 )	2022-10-10 15:15:09 -04:00
Charlie Marsh	42cec3f5a0	Regenerate rules table	2022-10-10 14:02:31 -04:00
Charlie Marsh	ee42413e10	Enable autofix for B014	2022-10-10 13:18:43 -04:00
Charlie Marsh	765db12b84	Remove check_ prefix from check utilities (#393 )	2022-10-10 12:58:40 -04:00
Charlie Marsh	e1b711d9c6	Bump version to 0.0.67	2022-10-10 12:55:04 -04:00
Charlie Marsh	35f593846e	Implement B014 from flake8-bugbear (#392 )	2022-10-10 12:53:42 -04:00
Charlie Marsh	c384fa513b	Implement B025 from flake8-bugbear (#391 )	2022-10-10 12:18:31 -04:00
Charlie Marsh	022ff64d29	Implement B011 from flake8-bugbear (#390 )	2022-10-10 10:55:55 -04:00
Charlie Marsh	5a06fb28fd	Bump version to 0.0.66	2022-10-10 10:03:59 -04:00
Charlie Marsh	46750a3e17	Flag unimplemented error codes in M001 (#388 )	2022-10-10 10:03:40 -04:00
Charlie Marsh	9cc902b802	Avoid F821 false-positives with NameError (#386 )	2022-10-10 09:39:59 -04:00
Harutaka Kawamura	c2a36ebd1e	Implement C410 (#382 )	2022-10-09 23:33:55 -04:00
Charlie Marsh	34ca225393	Rename flakes8 to flake8	2022-10-09 23:02:44 -04:00
Harutaka Kawamura	38c30905e6	Implement C409 (#381 )	2022-10-09 22:34:52 -04:00
Charlie Marsh	2774194b03	Bump version to 0.0.65	2022-10-09 22:14:04 -04:00
Charlie Marsh	71ebd39f35	Extend assertEquals check to all deprecated unittest aliases (#380 )	2022-10-09 22:13:51 -04:00
Charlie Marsh	a2f78ba2c7	Fix auto-fix for assertEquals rename	2022-10-09 22:11:32 -04:00
Charlie Marsh	b51a080a44	Rename SPR001 to U008 (#379 )	2022-10-09 21:58:22 -04:00
Charlie Marsh	6a1d7d8a1c	Defer string annotations even when futures annotations are enabled (#378 )	2022-10-09 18:28:29 -04:00
Charlie Marsh	10b250ee57	Bump version to 0.0.64	2022-10-09 17:38:09 -04:00
Charlie Marsh	30b1b1e15a	Treat TypeAlias values as annotations (#377 )	2022-10-09 17:37:19 -04:00
Charlie Marsh	aafe7c0c39	Mark aliased submodule imports as used (#374 )	2022-10-09 17:01:14 -04:00
Harutaka Kawamura	f060248656	Fix collapsed message (#372 )	2022-10-09 13:01:36 -04:00
Harutaka Kawamura	bbe0220c72	Implement C415 (#371 )	2022-10-09 10:12:58 -04:00
Charlie Marsh	129e2b6ad3	Bump version to 0.0.63	2022-10-08 22:51:49 -04:00
Charlie Marsh	73e744b1d0	Create unified Expr for PEP 604 rewrites (#370 )	2022-10-08 22:13:00 -04:00
Charlie Marsh	50a3fc5a67	Move some code into helpers.rs	2022-10-08 20:45:15 -04:00
Charlie Marsh	de499f0258	Optimize imports	2022-10-08 20:39:13 -04:00
Charlie Marsh	e1abe37c6a	Bump version to 0.0.62	2022-10-08 20:28:38 -04:00
Charlie Marsh	7fe5945541	Implement PEP 604 annotation rewrites (#369 )	2022-10-08 20:28:00 -04:00
Charlie Marsh	806f3fd4f6	Implement PEP 585 annotation rewrites (#368 )	2022-10-08 18:22:24 -04:00
Charlie Marsh	2bba643dd2	Use strum to facilitate simple enum serialization (#367 )	2022-10-08 17:47:25 -04:00
Charlie Marsh	54090bd7ac	Use strum to iterate over all check codes (#366 )	2022-10-08 17:41:47 -04:00
Charlie Marsh	c62727db42	Bump version to 0.0.61	2022-10-08 17:25:36 -04:00
Charlie Marsh	d0e1612507	Check newline ending on contents directly (#365 )	2022-10-08 17:25:22 -04:00
Harutaka Kawamura	5ccd907398	Implement C408 (#364 )	2022-10-08 17:17:34 -04:00
Harutaka Kawamura	346610c2e3	Implement C406 (#363 )	2022-10-08 11:15:41 -04:00
Harutaka Kawamura	307fa26515	Implement C405 (#362 )	2022-10-08 09:03:21 -04:00
Harutaka Kawamura	136d412edd	Add missing C400,C401, and C402 to `CheckCode.from_str` (#361 )	2022-10-08 09:02:03 -04:00
Harutaka Kawamura	d9edec0ac9	Implement C402 (#359 )	2022-10-07 22:57:04 -04:00
Chris Pryer	473675fffb	Add check for W292 (#339 )	2022-10-07 21:10:16 -04:00
Steven Maude	95dfc61315	Update GitHub Actions versions in README (#358 )	2022-10-07 20:24:00 -04:00
Charlie Marsh	dd496c7b52	Bump version to 0.0.60	2022-10-07 17:36:33 -04:00
Charlie Marsh	78aafb4b34	Warn the user if an explicitly selected check code is ignored (#356 )	2022-10-07 17:36:17 -04:00
Charlie Marsh	99c66d513a	Rename refactor checks to upgrade checks (#354 )	2022-10-07 16:54:55 -04:00
Charlie Marsh	04ade6a2f3	Update README.md	2022-10-07 16:50:17 -04:00
Charlie Marsh	4cf2682cda	Implement type(primitive) (#353 )	2022-10-07 16:47:06 -04:00
Charlie Marsh	e3a7357187	Wrap each import in its own backticks (#346 )	2022-10-07 15:58:30 -04:00
Charlie Marsh	b60768debb	Remove erroneous output.py file	2022-10-07 15:04:23 -04:00
Charlie Marsh	25e476639f	Use or_default in lieu of or_insert	2022-10-07 14:56:56 -04:00
Charlie Marsh	4645788205	Bump version to 0.0.59	2022-10-07 14:55:23 -04:00
Charlie Marsh	0b9eda8836	Add target Python version as a configurable setting (#344 )	2022-10-07 14:54:50 -04:00
Charlie Marsh	ad23d6acee	Remove :: prefix for ruff imports	2022-10-07 14:24:51 -04:00
Harutaka Kawamura	e3d1d01a1f	Implement C401 (#343 )	2022-10-07 13:00:22 -04:00
Harutaka Kawamura	6dfdd21a7c	Implement C400 (#340 )	2022-10-07 12:16:23 -04:00
Charlie Marsh	f17d3b3c44	Bump version to 0.0.58	2022-10-07 12:14:03 -04:00
Charlie Marsh	da6b913317	Exit 0 if all errors are fixed (#342 )	2022-10-07 12:13:15 -04:00
Harutaka Kawamura	bd34850f98	Implement C404 (#338 )	2022-10-07 08:53:18 -04:00
Charlie Marsh	d5b33cdb40	Add missing snapshot for U002	2022-10-07 08:48:59 -04:00
Charlie Marsh	3fb4cf7009	Hide autoformat argument	2022-10-06 22:56:01 -04:00
Charlie Marsh	6e19539e28	Enable abspath(__file__) removal (#336 )	2022-10-06 22:49:06 -04:00
Charlie Marsh	4eac7a07f5	Mention flake8-comprehensions in README	2022-10-06 16:26:21 -04:00
Harutaka Kawamura	5141285c8e	Implement C403 (#335 )	2022-10-06 16:24:23 -04:00
Charlie Marsh	82cc139d2d	Bump version to 0.0.57	2022-10-06 09:16:56 -04:00
Adrian Garcia Badaracco	df438ba051	Support PEP 593 annotations (#333 )	2022-10-06 09:16:07 -04:00
Adrian Garcia Badaracco	a70624cd47	add instructions for setting up cargo insta (#334 )	2022-10-06 08:01:11 -04:00
Charlie Marsh	b307afc00c	Move some accesses behind a shared function	2022-10-05 14:54:31 -04:00
Charlie Marsh	3d5bc1f51f	Migrate Checker logic to independent plugins (#331 )	2022-10-05 14:08:40 -04:00
Charlie Marsh	aba01745f5	Bump version to 0.0.56	2022-10-05 11:58:54 -04:00
Charlie Marsh	1eeeffab66	Add T201 and T203 to string conversion match (#332 )	2022-10-05 11:58:33 -04:00
Charlie Marsh	9b564c9cf4	Bump version to 0.0.55	2022-10-04 20:07:31 -04:00
Charlie Marsh	5bf8b13644	Properly combine CLI and pyproject.toml ignores and selects (#329 )	2022-10-04 20:07:17 -04:00
Anders Kaseorg	f80d5e70dd	Support extend-select in pyproject.toml (#327 )	2022-10-04 17:24:30 -04:00
Charlie Marsh	44897b2a5b	Enable AST-to-source code generation (#292 )	2022-10-04 16:27:57 -04:00
Anders Kaseorg	d1bcc919a2	Remove unnecessary Option wrapper from some pyproject::Config fields (#326 )	2022-10-04 16:27:40 -04:00
Charlie Marsh	03e1397427	Bump version to 0.0.54	2022-10-04 14:32:06 -04:00
Charlie Marsh	fdb32330a9	Implement __metaclass__ = type removal (#324 )	2022-10-04 14:31:52 -04:00
Charlie Marsh	4e6ae33a3a	Only flag super calls in class-function scopes (#323 )	2022-10-04 13:55:32 -04:00
Charlie Marsh	295ff8eb1a	Add autofix and default status to README (#322 )	2022-10-04 12:30:35 -04:00
Parth Shandilya	2449771d2f	Fix the broken link to contribution guidelines (#321 )	2022-10-04 11:10:10 -04:00