Bump version to 0.0.62

Implement PEP 604 annotation rewrites (#369 )
Implement PEP 585 annotation rewrites (#368 )
2022-10-08 20:28:38 -04:00 · 2022-10-08 20:28:00 -04:00 · 2022-10-08 18:22:24 -04:00 · 2022-10-08 17:47:25 -04:00 · 2022-10-08 17:41:47 -04:00 · 2022-10-08 17:25:36 -04:00
90 changed files with 5159 additions and 1180 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 = "0.0.50"
+version = "0.0.62"
 dependencies = [
 "anyhow",
 "bincode",
@@ -1894,9 +1930,13 @@ dependencies = [
 "path-absolutize",
 "rayon",
 "regex",
+ "rustpython-ast",
+ "rustpython-common",
 "rustpython-parser",
 "serde",
 "serde_json",
+ "strum",
+ "strum_macros",
 "toml",
 "update-informer",
 "walkdir",
@@ -1920,9 +1960,33 @@ version = "0.1.0"
 source = "git+https://github.com/charliermarsh/RustPython.git?rev=4f457893efc381ad5c432576b24bcc7e4a08c641#4f457893efc381ad5c432576b24bcc7e4a08c641"
 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=4f457893efc381ad5c432576b24bcc7e4a08c641#4f457893efc381ad5c432576b24bcc7e4a08c641"
+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"
@@ -2003,24 +2067,24 @@ 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 +2093,9 @@ 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 +2194,15 @@ 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 +2255,32 @@ 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 +2456,18 @@ 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 +2496,30 @@ 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 +2561,12 @@ 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 +2586,12 @@ 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 +2629,9 @@ 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 +2639,9 @@ 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 +2654,9 @@ 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 +2666,9 @@ 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 +2676,9 @@ 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 +2689,15 @@ 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 +2715,9 @@ 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 +2733,21 @@ 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 = "0.0.50"
+version = "0.0.62"
 edition = "2021"

 [lib]
@@ -27,12 +27,16 @@ 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-ast = { features = ["unparse"], git = "https://github.com/charliermarsh/RustPython.git", rev = "4f457893efc381ad5c432576b24bcc7e4a08c641" }
 rustpython-parser = { features = ["lalrpop"], git = "https://github.com/charliermarsh/RustPython.git", rev = "4f457893efc381ad5c432576b24bcc7e4a08c641" }
+rustpython-common = { git = "https://github.com/charliermarsh/RustPython.git", rev = "4f457893efc381ad5c432576b24bcc7e4a08c641" }
 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"

 [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
@@ -201,72 +203,100 @@ stylistic lint rules that are obviated by autoformatting.

 ### Parity with Flake8

-ruff's goal is to achieve feature-parity with Flake8 when used (1) without plugins, (2) alongside
+ruff's goal is to achieve feature parity with Flake8 when used (1) without plugins, (2) alongside
 Black, and (3) on Python 3 code.

 **Under those conditions, ruff implements 44 out of 60 rules.** (ruff is missing: 14 rules related
 to string `.format` calls, 1 rule related to docstring parsing, and 1 rule related to redefined
 variables.)

+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/) (partial)
+- [`pyupgrade`](https://pypi.org/project/pyupgrade/) (partial)
+
 Beyond rule-set parity, ruff suffers from the following limitations vis-à-vis Flake8:

-1. Flake8 has a plugin architecture and supports writing custom lint rules.
-2. ruff does not yet support a few Python 3.9 and 3.10 language features, including structural
+1. ruff does not yet support a few Python 3.9 and 3.10 language features, including structural
   pattern matching and parenthesized context managers.
+2. Flake8 has a plugin architecture and supports writing custom lint rules.

 ## 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)` |
-| 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 |  |  |
+| 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 |  |  |
+| SPR001 | SuperCallWithParameters | Use `super()` instead of `super(__class__, self)` |  | 🛠 |
+| 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 | NoAssertEquals | `assertEquals` is deprecated, use `assertEqual` instead |  | 🛠 |
+| U006 | UsePEP585Annotation | Use `list` instead of `List` for type annotations |  | 🛠 |
+| U007 | UsePEP604Annotation | Use `X | Y` for type annotations |  | 🛠 |
+| M001 | UnusedNOQA | Unused `noqa` directive |  | 🛠 |

 ## Integrations

@@ -293,9 +323,9 @@ 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
@@ -469,4 +499,4 @@ 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(),
+            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/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/F401.py
+++ b/resources/test/fixtures/F401.py
@@ -1,6 +1,5 @@
 from __future__ import all_feature_names
-import os
-import functools
+import functools, os
 from datetime import datetime
 from collections import (
    Counter,
@@ -11,14 +10,36 @@ import multiprocessing.pool
 import multiprocessing.process
 import logging.config
 import logging.handlers
-from typing import TYPING_CHECK, NamedTuple, Dict, Type, TypeVar, List, Set, Union, cast
+from typing import (
+    TYPE_CHECKING,
+    NamedTuple,
+    Dict,
+    Type,
+    TypeVar,
+    List,
+    Set,
+    Union,
+    cast,
+)
+from dataclasses import MISSING, field

 from blah import ClassA, ClassB, ClassC

-if TYPING_CHECK:
+if TYPE_CHECKING:
    from models import Fruit, Nut, Vegetable


+if TYPE_CHECKING:
+    import shelve
+    import importlib
+
+if TYPE_CHECKING:
+    """Hello, world!"""
+    import pathlib
+
+    z = 1
+
+
 class X:
    datetime: datetime
    foo: Type["NamedTuple"]
@@ -28,6 +49,9 @@ class X:
        y = Counter()
        z = multiprocessing.pool.ThreadPool()

+    def b(self) -> None:
+        import pickle
+

 __all__ = ["ClassA"] + ["ClassB"]
 __all__ += ["ClassC"]
@@ -39,3 +63,5 @@ Z = TypeVar("Z", "List", "Set")
 a = list["Fruit"]
 b = Union["Nut", None]
 c = cast("Vegetable", b)
+
+Field = lambda default=MISSING: field(default=default)
--- a/resources/test/fixtures/F821.py
+++ b/resources/test/fixtures/F821.py
@@ -89,3 +89,36 @@ 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,
+    ]
--- a/resources/test/fixtures/SPR001.py
+++ b/resources/test/fixtures/SPR001.py
@@ -20,3 +20,46 @@ class Child(Parent):
            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/T201.py
+++ b/resources/test/fixtures/T201.py
@@ -0,0 +1 @@
+print("Hello, world!")  # T201
--- a/resources/test/fixtures/T203.py
+++ b/resources/test/fixtures/T203.py
@@ -0,0 +1,10 @@
+from pprint import pprint
+
+pprint("Hello, world!")  # T203
+
+
+import pprint
+
+pprint.pprint("Hello, world!")  # T203
+
+pprint.pformat("Hello, world!")
--- 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
--- 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/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/resources/test/fixtures/future_annotations.py
+++ b/resources/test/fixtures/future_annotations.py
@@ -2,7 +2,10 @@ from __future__ import annotations

 from dataclasses import dataclass

-from models import Fruit, Nut
+from models import (
+    Fruit,
+    Nut,
+)


@dataclass
--- a/src/ast.rs
+++ b/src/ast.rs
@@ -1,4 +1,5 @@
 pub mod checks;
+pub mod helpers;
 pub mod operations;
 pub mod relocate;
 pub mod types;
--- a/src/ast/checks.rs
+++ b/src/ast/checks.rs
@@ -3,16 +3,15 @@ use std::collections::BTreeSet;
 use itertools::izip;
 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::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.
@@ -99,7 +98,7 @@ pub fn check_unused_variables(
        {
            checks.push(Check::new(
                CheckKind::UnusedVariable(name.to_string()),
-                locator.locate_check(binding.location),
+                locator.locate_check(binding.range),
            ));
        }
    }
@@ -116,6 +115,106 @@ pub fn check_do_not_assign_lambda(value: &Expr, location: Range) -> Option<Check
    }
 }

+/// Check UselessMetaclassType compliance.
+pub fn check_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 check_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 check_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"
 }
@@ -158,13 +257,9 @@ 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> {
    for expr in bases {
        if let ExprKind::Name { id, .. } = &expr.node {
@@ -175,22 +270,10 @@ 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);
+                        ));
                    }
                    _ => {}
                }
@@ -278,28 +361,15 @@ pub fn check_duplicate_arguments(arguments: &Arguments) -> Vec<Check> {
 }

 /// Check AssertEquals compliance.
-pub fn check_assert_equals(expr: &Expr, autofix: &fixer::Mode) -> Option<Check> {
+pub fn check_assert_equals(expr: &Expr) -> 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);
+                    return Some(Check::new(
+                        CheckKind::NoAssertEquals,
+                        Range::from_located(expr),
+                    ));
                }
            }
        }
@@ -576,10 +646,7 @@ 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));
            }
        }
    }
@@ -696,28 +763,323 @@ 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> {
+/// 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 {
-        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);
+        id == "super" && !args.is_empty()
+    } else {
+        false
+    }
+}
+
+// flakes8-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
+}
+
+// flake8-super
+/// Check that `super()` has no args
+pub fn check_super_args(
+    scope: &Scope,
+    parents: &[&Stmt],
+    expr: &Expr,
+    func: &Expr,
+    args: &Vec<Expr>,
+) -> Option<Check> {
+    if !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,
+    check_print: bool,
+    check_pprint: bool,
+) -> Option<Check> {
+    if let ExprKind::Name { id, .. } = &func.node {
+        if check_print && id == "print" {
+            return Some(Check::new(CheckKind::PrintFound, Range::from_located(expr)));
+        } else if check_pprint && id == "pprint" {
+            return Some(Check::new(
+                CheckKind::PPrintFound,
+                Range::from_located(expr),
+            ));
+        }
+    }
+
+    if let ExprKind::Attribute { value, attr, .. } = &func.node {
+        if let ExprKind::Name { id, .. } = &value.node {
+            if check_pprint && id == "pprint" && attr == "pprint" {
+                return Some(Check::new(
+                    CheckKind::PPrintFound,
+                    Range::from_located(expr),
+                ));
+            }
+        }
+    }
+
+    None
+}
--- a/src/ast/helpers.rs
+++ b/src/ast/helpers.rs
@@ -0,0 +1,9 @@
+use rustpython_ast::{Expr, ExprKind};
+
+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,
+    }
+}
--- a/src/ast/operations.rs
+++ b/src/ast/operations.rs
@@ -1,6 +1,6 @@
 use rustpython_parser::ast::{Constant, Expr, ExprKind, Location, Stmt, StmtKind};

-use crate::ast::types::{BindingKind, Scope};
+use crate::ast::types::{BindingKind, Range, Scope};

 /// Extract the names bound to a given __all__ assignment.
 pub fn extract_all_names(stmt: &Stmt, scope: &Scope) -> Vec<String> {
@@ -148,7 +148,7 @@ impl<'a> SourceCodeLocator<'a> {
        &self.content[offset..]
    }

-    pub fn slice_source_code_range(&mut self, start: &Location, end: &Location) -> &'a str {
+    pub fn slice_source_code_range(&mut self, range: &Range) -> &'a str {
        if !self.initialized {
            let mut offset = 0;
            for i in self.content.lines() {
@@ -158,8 +158,8 @@ impl<'a> SourceCodeLocator<'a> {
            }
            self.initialized = true;
        }
-        let start = self.offsets[start.row() - 1] + start.column() - 1;
-        let end = self.offsets[end.row() - 1] + end.column() - 1;
+        let start = self.offsets[range.location.row() - 1] + range.location.column() - 1;
+        let end = self.offsets[range.end_location.row() - 1] + range.end_location.column() - 1;
        &self.content[start..end]
    }
 }
--- a/src/ast/types.rs
+++ b/src/ast/types.rs
@@ -8,7 +8,7 @@ fn id() -> usize {
    COUNTER.fetch_add(1, Ordering::Relaxed)
 }

-#[derive(Clone, Copy, Debug, Default)]
+#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, PartialOrd, Ord)]
 pub struct Range {
    pub location: Location,
    pub end_location: Location,
@@ -55,6 +55,12 @@ impl Scope {
    }
 }

+#[derive(Clone, Debug)]
+pub struct BindingContext {
+    pub defined_by: usize,
+    pub defined_in: Option<usize>,
+}
+
 #[derive(Clone, Debug)]
 pub enum BindingKind {
    Annotation,
@@ -67,15 +73,16 @@ pub enum BindingKind {
    Definition,
    Export(Vec<String>),
    FutureImportation,
-    Importation(String),
    StarImportation,
-    SubmoduleImportation(String),
+    Importation(String, BindingContext),
+    FromImportation(String, BindingContext),
+    SubmoduleImportation(String, BindingContext),
 }

 #[derive(Clone, Debug)]
 pub struct Binding {
    pub kind: BindingKind,
-    pub location: Range,
+    pub range: Range,
    /// Tuple of (scope index, range) indicating the scope and range at which the binding was
    /// last used.
    pub used: Option<(usize, Range)>,
@@ -84,3 +91,9 @@ pub struct Binding {
 pub trait CheckLocator {
    fn locate_check(&self, default: Range) -> Range;
 }
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord)]
+pub enum ImportKind {
+    Import,
+    ImportFrom,
+}
--- a/src/autofix/fixer.rs
+++ b/src/autofix/fixer.rs
@@ -2,6 +2,7 @@ use std::fs;
 use std::path::Path;

 use anyhow::Result;
+use itertools::Itertools;
 use rustpython_parser::ast::Location;

 use crate::checks::{Check, Fix};
@@ -43,7 +44,7 @@ fn apply_fixes<'a>(fixes: impl Iterator<Item = &'a mut Fix>, contents: &str) ->
    let mut output = "".to_string();
    let mut last_pos: Location = Location::new(0, 0);

-    for fix in fixes {
+    for fix in fixes.sorted_by_key(|fix| fix.location) {
        // Best-effort approach: if this fix overlaps with a fix we've already applied, skip it.
        if last_pos > fix.location {
            continue;
@@ -71,13 +72,18 @@ fn apply_fixes<'a>(fixes: impl Iterator<Item = &'a mut Fix>, contents: &str) ->
        fix.applied = true;
    }

-    if last_pos.row() > 0 || last_pos.column() > 0 {
+    if last_pos.row() > 0
+        && (last_pos.row() - 1) < lines.len()
+        && (last_pos.row() > 0 || last_pos.column() > 0)
+    {
        output.push_str(&lines[last_pos.row() - 1][last_pos.column() - 1..]);
        output.push('\n');
    }
-    for line in &lines[last_pos.row()..] {
-        output.push_str(line);
-        output.push('\n');
+    if last_pos.row() < lines.len() {
+        for line in &lines[last_pos.row()..] {
+            output.push_str(line);
+            output.push('\n');
+        }
    }

    output
--- a/src/autofix/fixes.rs
+++ b/src/autofix/fixes.rs
@@ -1,9 +1,14 @@
+use anyhow::Result;
+use itertools::Itertools;
+use libcst_native::ImportNames::Aliases;
+use libcst_native::NameOrAttribute::N;
 use libcst_native::{Codegen, Expression, SmallStatement, Statement};
-use rustpython_parser::ast::{Expr, Keyword, Location};
+use rustpython_parser::ast::{ExcepthandlerKind, Expr, Keyword, Location, Stmt, StmtKind};
 use rustpython_parser::lexer;
 use rustpython_parser::token::Tok;

 use crate::ast::operations::SourceCodeLocator;
+use crate::ast::types::Range;
 use crate::checks::Fix;

 /// Convert a location within a file (relative to `base`) to an absolute position.
@@ -127,7 +132,8 @@ pub fn remove_class_def_base(
 }

 pub fn remove_super_arguments(locator: &mut SourceCodeLocator, expr: &Expr) -> Option<Fix> {
-    let contents = locator.slice_source_code_range(&expr.location, &expr.end_location);
+    let range = Range::from_located(expr);
+    let contents = locator.slice_source_code_range(&range);

    let mut tree = match libcst_native::parse_module(contents, None) {
        Ok(m) => m,
@@ -146,8 +152,8 @@ pub fn remove_super_arguments(locator: &mut SourceCodeLocator, expr: &Expr) -> O

                return Some(Fix {
                    content: state.to_string(),
-                    location: expr.location,
-                    end_location: expr.end_location,
+                    location: range.location,
+                    end_location: range.end_location,
                    applied: false,
                });
            }
@@ -156,3 +162,231 @@ pub fn remove_super_arguments(locator: &mut SourceCodeLocator, expr: &Expr) -> O

    None
 }
+
+/// Determine if a body contains only a single statement, taking into account deleted.
+fn has_single_child(body: &[Stmt], deleted: &[&Stmt]) -> bool {
+    body.iter().filter(|child| !deleted.contains(child)).count() == 1
+}
+
+/// Determine if a child is the only statement in its body.
+fn is_lone_child(child: &Stmt, parent: &Stmt, deleted: &[&Stmt]) -> Result<bool> {
+    match &parent.node {
+        StmtKind::FunctionDef { body, .. }
+        | StmtKind::AsyncFunctionDef { body, .. }
+        | StmtKind::ClassDef { body, .. }
+        | StmtKind::With { body, .. }
+        | StmtKind::AsyncWith { body, .. } => {
+            if body.iter().contains(child) {
+                Ok(has_single_child(body, deleted))
+            } else {
+                Err(anyhow::anyhow!("Unable to find child in parent body."))
+            }
+        }
+        StmtKind::For { body, orelse, .. }
+        | StmtKind::AsyncFor { body, orelse, .. }
+        | StmtKind::While { body, orelse, .. }
+        | StmtKind::If { body, orelse, .. } => {
+            if body.iter().contains(child) {
+                Ok(has_single_child(body, deleted))
+            } else if orelse.iter().contains(child) {
+                Ok(has_single_child(orelse, deleted))
+            } else {
+                Err(anyhow::anyhow!("Unable to find child in parent body."))
+            }
+        }
+        StmtKind::Try {
+            body,
+            handlers,
+            orelse,
+            finalbody,
+        } => {
+            if body.iter().contains(child) {
+                Ok(has_single_child(body, deleted))
+            } else if orelse.iter().contains(child) {
+                Ok(has_single_child(orelse, deleted))
+            } else if finalbody.iter().contains(child) {
+                Ok(has_single_child(finalbody, deleted))
+            } else if let Some(body) = handlers.iter().find_map(|handler| match &handler.node {
+                ExcepthandlerKind::ExceptHandler { body, .. } => {
+                    if body.iter().contains(child) {
+                        Some(body)
+                    } else {
+                        None
+                    }
+                }
+            }) {
+                Ok(has_single_child(body, deleted))
+            } else {
+                Err(anyhow::anyhow!("Unable to find child in parent body."))
+            }
+        }
+        _ => Err(anyhow::anyhow!("Unable to find child in parent body.")),
+    }
+}
+
+pub fn remove_stmt(stmt: &Stmt, parent: Option<&Stmt>, deleted: &[&Stmt]) -> Result<Fix> {
+    if parent
+        .map(|parent| is_lone_child(stmt, parent, deleted))
+        .map_or(Ok(None), |v| v.map(Some))?
+        .unwrap_or_default()
+    {
+        // If removing this node would lead to an invalid syntax tree, replace
+        // it with a `pass`.
+        Ok(Fix {
+            location: stmt.location,
+            end_location: stmt.end_location,
+            content: "pass".to_string(),
+            applied: false,
+        })
+    } else {
+        // Otherwise, nuke the entire line.
+        // TODO(charlie): This logic assumes that there are no multi-statement physical lines.
+        Ok(Fix {
+            location: Location::new(stmt.location.row(), 1),
+            end_location: Location::new(stmt.end_location.row() + 1, 1),
+            content: "".to_string(),
+            applied: false,
+        })
+    }
+}
+
+/// Generate a Fix to remove any unused imports from an `import` statement.
+pub fn remove_unused_imports(
+    locator: &mut SourceCodeLocator,
+    full_names: &[&str],
+    stmt: &Stmt,
+    parent: Option<&Stmt>,
+    deleted: &[&Stmt],
+) -> Result<Fix> {
+    let mut tree = match libcst_native::parse_module(
+        locator.slice_source_code_range(&Range::from_located(stmt)),
+        None,
+    ) {
+        Ok(m) => m,
+        Err(_) => return Err(anyhow::anyhow!("Failed to extract CST from source.")),
+    };
+
+    let body = if let Some(Statement::Simple(body)) = tree.body.first_mut() {
+        body
+    } else {
+        return Err(anyhow::anyhow!("Expected node to be: Statement::Simple."));
+    };
+    let body = if let Some(SmallStatement::Import(body)) = body.body.first_mut() {
+        body
+    } else {
+        return Err(anyhow::anyhow!(
+            "Expected node to be: SmallStatement::ImportFrom."
+        ));
+    };
+    let aliases = &mut body.names;
+
+    // Preserve the trailing comma (or not) from the last entry.
+    let trailing_comma = aliases.last().and_then(|alias| alias.comma.clone());
+
+    // Identify unused imports from within the `import from`.
+    let mut removable = vec![];
+    for (index, alias) in aliases.iter().enumerate() {
+        if let N(import_name) = &alias.name {
+            if full_names.contains(&import_name.value) {
+                removable.push(index);
+            }
+        }
+    }
+    // TODO(charlie): This is quadratic.
+    for index in removable.iter().rev() {
+        aliases.remove(*index);
+    }
+
+    if let Some(alias) = aliases.last_mut() {
+        alias.comma = trailing_comma;
+    }
+
+    if aliases.is_empty() {
+        remove_stmt(stmt, parent, deleted)
+    } else {
+        let mut state = Default::default();
+        tree.codegen(&mut state);
+
+        Ok(Fix {
+            content: state.to_string(),
+            location: stmt.location,
+            end_location: stmt.end_location,
+            applied: false,
+        })
+    }
+}
+
+/// Generate a Fix to remove any unused imports from an `import from` statement.
+pub fn remove_unused_import_froms(
+    locator: &mut SourceCodeLocator,
+    full_names: &[&str],
+    stmt: &Stmt,
+    parent: Option<&Stmt>,
+    deleted: &[&Stmt],
+) -> Result<Fix> {
+    let mut tree = match libcst_native::parse_module(
+        locator.slice_source_code_range(&Range::from_located(stmt)),
+        None,
+    ) {
+        Ok(m) => m,
+        Err(_) => return Err(anyhow::anyhow!("Failed to extract CST from source.")),
+    };
+
+    let body = if let Some(Statement::Simple(body)) = tree.body.first_mut() {
+        body
+    } else {
+        return Err(anyhow::anyhow!("Expected node to be: Statement::Simple."));
+    };
+    let body = if let Some(SmallStatement::ImportFrom(body)) = body.body.first_mut() {
+        body
+    } else {
+        return Err(anyhow::anyhow!(
+            "Expected node to be: SmallStatement::ImportFrom."
+        ));
+    };
+    let aliases = if let Aliases(aliases) = &mut body.names {
+        aliases
+    } else {
+        return Err(anyhow::anyhow!("Expected node to be: Aliases."));
+    };
+
+    // Preserve the trailing comma (or not) from the last entry.
+    let trailing_comma = aliases.last().and_then(|alias| alias.comma.clone());
+
+    // Identify unused imports from within the `import from`.
+    let mut removable = vec![];
+    for (index, alias) in aliases.iter().enumerate() {
+        if let N(name) = &alias.name {
+            let import_name = if let Some(N(module_name)) = &body.module {
+                format!("{}.{}", module_name.value, name.value)
+            } else {
+                name.value.to_string()
+            };
+            if full_names.contains(&import_name.as_str()) {
+                removable.push(index);
+            }
+        }
+    }
+    // TODO(charlie): This is quadratic.
+    for index in removable.iter().rev() {
+        aliases.remove(*index);
+    }
+
+    if let Some(alias) = aliases.last_mut() {
+        alias.comma = trailing_comma;
+    }
+
+    if aliases.is_empty() {
+        remove_stmt(stmt, parent, deleted)
+    } else {
+        let mut state = Default::default();
+        tree.codegen(&mut state);
+
+        Ok(Fix {
+            content: state.to_string(),
+            location: stmt.location,
+            end_location: stmt.end_location,
+            applied: false,
+        })
+    }
+}
--- a/src/check_ast.rs
+++ b/src/check_ast.rs
--- a/src/check_lines.rs
+++ b/src/check_lines.rs
@@ -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 {
--- a/src/checks.rs
+++ b/src/checks.rs
@@ -1,12 +1,13 @@
-use std::str::FromStr;
-
-use crate::ast::types::Range;
-use anyhow::Result;
+use itertools::Itertools;
 use rustpython_parser::ast::Location;
 use serde::{Deserialize, Serialize};
+use strum_macros::{AsRefStr, EnumIter, EnumString};

-pub const DEFAULT_CHECK_CODES: [CheckCode; 46] = [
-    // pycodestyle
+use crate::ast::checks::Primitive;
+use crate::ast::types::Range;
+
+pub const DEFAULT_CHECK_CODES: [CheckCode; 43] = [
+    // pycodestyle errors
    CheckCode::E402,
    CheckCode::E501,
    CheckCode::E711,
@@ -21,6 +22,8 @@ pub const DEFAULT_CHECK_CODES: [CheckCode; 46] = [
    CheckCode::E743,
    CheckCode::E902,
    CheckCode::E999,
+    // pycodestyle warnings
+    CheckCode::W292,
    // pyflakes
    CheckCode::F401,
    CheckCode::F402,
@@ -50,75 +53,24 @@ pub const DEFAULT_CHECK_CODES: [CheckCode; 46] = [
    CheckCode::F831,
    CheckCode::F841,
    CheckCode::F901,
-    // flake8-builtins
-    CheckCode::A001,
-    CheckCode::A002,
-    CheckCode::A003,
-    // flake8-super
-    CheckCode::SPR001,
 ];

-pub const ALL_CHECK_CODES: [CheckCode; 49] = [
-    // pycodestyle
-    CheckCode::E402,
-    CheckCode::E501,
-    CheckCode::E711,
-    CheckCode::E712,
-    CheckCode::E713,
-    CheckCode::E714,
-    CheckCode::E721,
-    CheckCode::E722,
-    CheckCode::E731,
-    CheckCode::E741,
-    CheckCode::E742,
-    CheckCode::E743,
-    CheckCode::E902,
-    CheckCode::E999,
-    // pyflakes
-    CheckCode::F401,
-    CheckCode::F402,
-    CheckCode::F403,
-    CheckCode::F404,
-    CheckCode::F405,
-    CheckCode::F406,
-    CheckCode::F407,
-    CheckCode::F541,
-    CheckCode::F601,
-    CheckCode::F602,
-    CheckCode::F621,
-    CheckCode::F622,
-    CheckCode::F631,
-    CheckCode::F632,
-    CheckCode::F633,
-    CheckCode::F634,
-    CheckCode::F701,
-    CheckCode::F702,
-    CheckCode::F704,
-    CheckCode::F706,
-    CheckCode::F707,
-    CheckCode::F722,
-    CheckCode::F821,
-    CheckCode::F822,
-    CheckCode::F823,
-    CheckCode::F831,
-    CheckCode::F841,
-    CheckCode::F901,
-    // flake8-builtins
-    CheckCode::A001,
-    CheckCode::A002,
-    CheckCode::A003,
-    // flake8-super
-    CheckCode::SPR001,
-    // Meta
-    CheckCode::M001,
-    // Refactor
-    CheckCode::R001,
-    CheckCode::R002,
-];
-
-#[derive(Debug, PartialEq, Eq, Clone, Serialize, Deserialize, Hash, PartialOrd, Ord)]
+#[derive(
+    AsRefStr,
+    EnumIter,
+    EnumString,
+    Debug,
+    PartialEq,
+    Eq,
+    Clone,
+    Serialize,
+    Deserialize,
+    Hash,
+    PartialOrd,
+    Ord,
+)]
 pub enum CheckCode {
-    // pycodestyle
+    // pycodestyle errors
    E402,
    E501,
    E711,
@@ -133,6 +85,8 @@ pub enum CheckCode {
    E743,
    E902,
    E999,
+    // pycodestyle warnings
+    W292,
    // pyflakes
    F401,
    F402,
@@ -166,141 +120,123 @@ pub enum CheckCode {
    A001,
    A002,
    A003,
+    // flake8-comprehensions
+    C400,
+    C401,
+    C402,
+    C403,
+    C404,
+    C405,
+    C406,
+    C408,
    // flake8-super
    SPR001,
-    // Refactor
-    R001,
-    R002,
+    // flake8-print
+    T201,
+    T203,
+    // pyupgrade
+    U001,
+    U002,
+    U003,
+    U004,
+    U005,
+    U006,
+    U007,
    // Meta
    M001,
 }

-impl FromStr for CheckCode {
-    type Err = anyhow::Error;
+#[allow(clippy::upper_case_acronyms)]
+pub enum LintSource {
+    AST,
+    Lines,
+    FileSystem,
+}

-    fn from_str(s: &str) -> Result<Self> {
-        match s {
-            // pycodestyle
-            "E402" => Ok(CheckCode::E402),
-            "E501" => Ok(CheckCode::E501),
-            "E711" => Ok(CheckCode::E711),
-            "E712" => Ok(CheckCode::E712),
-            "E713" => Ok(CheckCode::E713),
-            "E714" => Ok(CheckCode::E714),
-            "E721" => Ok(CheckCode::E721),
-            "E722" => Ok(CheckCode::E722),
-            "E731" => Ok(CheckCode::E731),
-            "E741" => Ok(CheckCode::E741),
-            "E742" => Ok(CheckCode::E742),
-            "E743" => Ok(CheckCode::E743),
-            "E902" => Ok(CheckCode::E902),
-            "E999" => Ok(CheckCode::E999),
-            // pyflakes
-            "F401" => Ok(CheckCode::F401),
-            "F402" => Ok(CheckCode::F402),
-            "F403" => Ok(CheckCode::F403),
-            "F404" => Ok(CheckCode::F404),
-            "F405" => Ok(CheckCode::F405),
-            "F406" => Ok(CheckCode::F406),
-            "F407" => Ok(CheckCode::F407),
-            "F541" => Ok(CheckCode::F541),
-            "F601" => Ok(CheckCode::F601),
-            "F602" => Ok(CheckCode::F602),
-            "F621" => Ok(CheckCode::F621),
-            "F622" => Ok(CheckCode::F622),
-            "F631" => Ok(CheckCode::F631),
-            "F632" => Ok(CheckCode::F632),
-            "F633" => Ok(CheckCode::F633),
-            "F634" => Ok(CheckCode::F634),
-            "F701" => Ok(CheckCode::F701),
-            "F702" => Ok(CheckCode::F702),
-            "F704" => Ok(CheckCode::F704),
-            "F706" => Ok(CheckCode::F706),
-            "F707" => Ok(CheckCode::F707),
-            "F722" => Ok(CheckCode::F722),
-            "F821" => Ok(CheckCode::F821),
-            "F822" => Ok(CheckCode::F822),
-            "F823" => Ok(CheckCode::F823),
-            "F831" => Ok(CheckCode::F831),
-            "F841" => Ok(CheckCode::F841),
-            "F901" => Ok(CheckCode::F901),
-            // flake8-builtins
-            "A001" => Ok(CheckCode::A001),
-            "A002" => Ok(CheckCode::A002),
-            "A003" => Ok(CheckCode::A003),
-            // flake8-super
-            "SPR001" => Ok(CheckCode::SPR001),
-            // Refactor
-            "R001" => Ok(CheckCode::R001),
-            "R002" => Ok(CheckCode::R002),
-            // Meta
-            "M001" => Ok(CheckCode::M001),
-            _ => Err(anyhow::anyhow!("Unknown check code: {s}")),
-        }
-    }
+#[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
+pub enum RejectedCmpop {
+    Eq,
+    NotEq,
+}
+
+#[derive(AsRefStr, Debug, PartialEq, Eq, Serialize, Deserialize)]
+pub enum CheckKind {
+    // pycodestyle errors
+    AmbiguousClassName(String),
+    AmbiguousFunctionName(String),
+    AmbiguousVariableName(String),
+    AssertTuple,
+    BreakOutsideLoop,
+    ContinueOutsideLoop,
+    DefaultExceptNotLast,
+    DoNotAssignLambda,
+    DoNotUseBareExcept,
+    DuplicateArgumentName,
+    ExpressionsInStarAssignment,
+    FStringMissingPlaceholders,
+    ForwardAnnotationSyntaxError(String),
+    FutureFeatureNotDefined(String),
+    IOError(String),
+    IfTuple,
+    ImportShadowedByLoopVar(String, usize),
+    ImportStarNotPermitted(String),
+    ImportStarUsage(String, Vec<String>),
+    ImportStarUsed(String),
+    InvalidPrintSyntax,
+    IsLiteral,
+    LateFutureImport,
+    LineTooLong(usize, usize),
+    ModuleImportNotAtTopOfFile,
+    MultiValueRepeatedKeyLiteral,
+    MultiValueRepeatedKeyVariable(String),
+    NoneComparison(RejectedCmpop),
+    NotInTest,
+    NotIsTest,
+    RaiseNotImplemented,
+    ReturnOutsideFunction,
+    SyntaxError(String),
+    TrueFalseComparison(bool, RejectedCmpop),
+    TwoStarredExpressions,
+    TypeComparison,
+    UndefinedExport(String),
+    UndefinedLocal(String),
+    UndefinedName(String),
+    UnusedImport(Vec<String>),
+    UnusedVariable(String),
+    YieldOutsideFunction,
+    // pycodestyle warnings
+    NoNewLineAtEndOfFile,
+    // flake8-builtin
+    BuiltinVariableShadowing(String),
+    BuiltinArgumentShadowing(String),
+    BuiltinAttributeShadowing(String),
+    // flakes8-comprehensions
+    UnnecessaryGeneratorList,
+    UnnecessaryGeneratorSet,
+    UnnecessaryGeneratorDict,
+    UnnecessaryListComprehensionSet,
+    UnnecessaryListComprehensionDict,
+    UnnecessaryLiteralSet(String),
+    UnnecessaryLiteralDict(String),
+    UnnecessaryCollectionCall(String),
+    // flake8-super
+    SuperCallWithParameters,
+    // flake8-print
+    PrintFound,
+    PPrintFound,
+    // pyupgrade
+    TypeOfPrimitive(Primitive),
+    UnnecessaryAbspath,
+    UselessMetaclassType,
+    NoAssertEquals,
+    UselessObjectInheritance(String),
+    UsePEP585Annotation(String),
+    UsePEP604Annotation,
+    // Meta
+    UnusedNOQA(Option<String>),
 }

 impl CheckCode {
-    pub fn as_str(&self) -> &str {
-        match self {
-            // pycodestyle
-            CheckCode::E402 => "E402",
-            CheckCode::E501 => "E501",
-            CheckCode::E711 => "E711",
-            CheckCode::E712 => "E712",
-            CheckCode::E713 => "E713",
-            CheckCode::E714 => "E714",
-            CheckCode::E721 => "E721",
-            CheckCode::E722 => "E722",
-            CheckCode::E731 => "E731",
-            CheckCode::E741 => "E741",
-            CheckCode::E742 => "E742",
-            CheckCode::E743 => "E743",
-            CheckCode::E902 => "E902",
-            CheckCode::E999 => "E999",
-            // pyflakes
-            CheckCode::F401 => "F401",
-            CheckCode::F402 => "F402",
-            CheckCode::F403 => "F403",
-            CheckCode::F404 => "F404",
-            CheckCode::F405 => "F405",
-            CheckCode::F406 => "F406",
-            CheckCode::F407 => "F407",
-            CheckCode::F541 => "F541",
-            CheckCode::F601 => "F601",
-            CheckCode::F602 => "F602",
-            CheckCode::F621 => "F621",
-            CheckCode::F622 => "F622",
-            CheckCode::F631 => "F631",
-            CheckCode::F632 => "F632",
-            CheckCode::F633 => "F633",
-            CheckCode::F634 => "F634",
-            CheckCode::F701 => "F701",
-            CheckCode::F702 => "F702",
-            CheckCode::F704 => "F704",
-            CheckCode::F706 => "F706",
-            CheckCode::F707 => "F707",
-            CheckCode::F722 => "F722",
-            CheckCode::F821 => "F821",
-            CheckCode::F822 => "F822",
-            CheckCode::F823 => "F823",
-            CheckCode::F831 => "F831",
-            CheckCode::F841 => "F841",
-            CheckCode::F901 => "F901",
-            // flake8-builtins
-            CheckCode::A001 => "A001",
-            CheckCode::A002 => "A002",
-            CheckCode::A003 => "A003",
-            // flake8-super
-            CheckCode::SPR001 => "SPR001",
-            // Refactor
-            CheckCode::R001 => "R001",
-            CheckCode::R002 => "R002",
-            // Meta
-            CheckCode::M001 => "M001",
-        }
-    }
-
    /// The source for the check (either the AST, the filesystem, or the physical lines).
    pub fn lint_source(&self) -> &'static LintSource {
        match self {
@@ -313,7 +249,7 @@ impl CheckCode {
    /// A placeholder representation of the CheckKind for the check.
    pub fn kind(&self) -> CheckKind {
        match self {
-            // pycodestyle
+            // pycodestyle errors
            CheckCode::E402 => CheckKind::ModuleImportNotAtTopOfFile,
            CheckCode::E501 => CheckKind::LineTooLong(89, 88),
            CheckCode::E711 => CheckKind::NoneComparison(RejectedCmpop::Eq),
@@ -326,20 +262,24 @@ impl CheckCode {
            CheckCode::E741 => CheckKind::AmbiguousVariableName("...".to_string()),
            CheckCode::E742 => CheckKind::AmbiguousClassName("...".to_string()),
            CheckCode::E743 => CheckKind::AmbiguousFunctionName("...".to_string()),
-            CheckCode::E902 => CheckKind::IOError("...".to_string()),
-            CheckCode::E999 => CheckKind::SyntaxError("...".to_string()),
+            CheckCode::E902 => CheckKind::IOError("IOError: `...`".to_string()),
+            CheckCode::E999 => CheckKind::SyntaxError("`...`".to_string()),
+            // pycodestyle warnings
+            CheckCode::W292 => CheckKind::NoNewLineAtEndOfFile,
            // pyflakes
-            CheckCode::F401 => CheckKind::UnusedImport("...".to_string()),
+            CheckCode::F401 => CheckKind::UnusedImport(vec!["...".to_string()]),
            CheckCode::F402 => CheckKind::ImportShadowedByLoopVar("...".to_string(), 1),
            CheckCode::F403 => CheckKind::ImportStarUsed("...".to_string()),
            CheckCode::F404 => CheckKind::LateFutureImport,
-            CheckCode::F405 => CheckKind::ImportStarUsage("...".to_string(), "...".to_string()),
+            CheckCode::F405 => {
+                CheckKind::ImportStarUsage("...".to_string(), vec!["...".to_string()])
+            }
            CheckCode::F406 => CheckKind::ImportStarNotPermitted("...".to_string()),
            CheckCode::F407 => CheckKind::FutureFeatureNotDefined("...".to_string()),
            CheckCode::F541 => CheckKind::FStringMissingPlaceholders,
            CheckCode::F601 => CheckKind::MultiValueRepeatedKeyLiteral,
            CheckCode::F602 => CheckKind::MultiValueRepeatedKeyVariable("...".to_string()),
-            CheckCode::F621 => CheckKind::TooManyExpressionsInStarredAssignment,
+            CheckCode::F621 => CheckKind::ExpressionsInStarAssignment,
            CheckCode::F622 => CheckKind::TwoStarredExpressions,
            CheckCode::F631 => CheckKind::AssertTuple,
            CheckCode::F632 => CheckKind::IsLiteral,
@@ -361,148 +301,41 @@ impl CheckCode {
            CheckCode::A001 => CheckKind::BuiltinVariableShadowing("...".to_string()),
            CheckCode::A002 => CheckKind::BuiltinArgumentShadowing("...".to_string()),
            CheckCode::A003 => CheckKind::BuiltinAttributeShadowing("...".to_string()),
+            // flake8-comprehensions
+            CheckCode::C400 => CheckKind::UnnecessaryGeneratorList,
+            CheckCode::C401 => CheckKind::UnnecessaryGeneratorSet,
+            CheckCode::C402 => CheckKind::UnnecessaryGeneratorDict,
+            CheckCode::C403 => CheckKind::UnnecessaryListComprehensionSet,
+            CheckCode::C404 => CheckKind::UnnecessaryListComprehensionDict,
+            CheckCode::C405 => CheckKind::UnnecessaryLiteralSet("<list/tuple>".to_string()),
+            CheckCode::C406 => CheckKind::UnnecessaryLiteralDict("<list/tuple>".to_string()),
+            CheckCode::C408 => {
+                CheckKind::UnnecessaryCollectionCall("<dict/list/tuple>".to_string())
+            }
            // flake8-super
            CheckCode::SPR001 => CheckKind::SuperCallWithParameters,
-            // Refactor
-            CheckCode::R001 => CheckKind::UselessObjectInheritance("...".to_string()),
-            CheckCode::R002 => CheckKind::NoAssertEquals,
+            // flake8-print
+            CheckCode::T201 => CheckKind::PrintFound,
+            CheckCode::T203 => CheckKind::PPrintFound,
+            // pyupgrade
+            CheckCode::U001 => CheckKind::UselessMetaclassType,
+            CheckCode::U002 => CheckKind::UnnecessaryAbspath,
+            CheckCode::U003 => CheckKind::TypeOfPrimitive(Primitive::Str),
+            CheckCode::U004 => CheckKind::UselessObjectInheritance("...".to_string()),
+            CheckCode::U005 => CheckKind::NoAssertEquals,
+            CheckCode::U006 => CheckKind::UsePEP585Annotation("List".to_string()),
+            CheckCode::U007 => CheckKind::UsePEP604Annotation,
            // Meta
            CheckCode::M001 => CheckKind::UnusedNOQA(None),
        }
    }
 }

-#[allow(clippy::upper_case_acronyms)]
-pub enum LintSource {
-    AST,
-    Lines,
-    FileSystem,
-}
-
-#[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
-pub enum RejectedCmpop {
-    Eq,
-    NotEq,
-}
-
-#[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
-pub enum CheckKind {
-    UnusedNOQA(Option<String>),
-    AmbiguousClassName(String),
-    AmbiguousFunctionName(String),
-    AmbiguousVariableName(String),
-    AssertTuple,
-    BreakOutsideLoop,
-    ContinueOutsideLoop,
-    DefaultExceptNotLast,
-    DoNotAssignLambda,
-    DoNotUseBareExcept,
-    DuplicateArgumentName,
-    ForwardAnnotationSyntaxError(String),
-    FStringMissingPlaceholders,
-    FutureFeatureNotDefined(String),
-    IOError(String),
-    IfTuple,
-    ImportShadowedByLoopVar(String, usize),
-    ImportStarNotPermitted(String),
-    ImportStarUsage(String, String),
-    ImportStarUsed(String),
-    InvalidPrintSyntax,
-    IsLiteral,
-    LateFutureImport,
-    LineTooLong(usize, usize),
-    ModuleImportNotAtTopOfFile,
-    MultiValueRepeatedKeyLiteral,
-    MultiValueRepeatedKeyVariable(String),
-    NoAssertEquals,
-    NoneComparison(RejectedCmpop),
-    NotInTest,
-    NotIsTest,
-    RaiseNotImplemented,
-    ReturnOutsideFunction,
-    SyntaxError(String),
-    TooManyExpressionsInStarredAssignment,
-    TrueFalseComparison(bool, RejectedCmpop),
-    TwoStarredExpressions,
-    TypeComparison,
-    UndefinedExport(String),
-    UndefinedLocal(String),
-    UndefinedName(String),
-    UnusedImport(String),
-    UnusedVariable(String),
-    UselessObjectInheritance(String),
-    YieldOutsideFunction,
-    // flake8-builtin
-    BuiltinVariableShadowing(String),
-    BuiltinArgumentShadowing(String),
-    BuiltinAttributeShadowing(String),
-    // flake8-super
-    SuperCallWithParameters,
-}
-
 impl CheckKind {
-    /// The name of the check.
-    pub fn name(&self) -> &'static str {
-        match self {
-            CheckKind::AmbiguousClassName(_) => "AmbiguousClassName",
-            CheckKind::AmbiguousFunctionName(_) => "AmbiguousFunctionName",
-            CheckKind::AmbiguousVariableName(_) => "AmbiguousVariableName",
-            CheckKind::AssertTuple => "AssertTuple",
-            CheckKind::BreakOutsideLoop => "BreakOutsideLoop",
-            CheckKind::ContinueOutsideLoop => "ContinueOutsideLoop",
-            CheckKind::DefaultExceptNotLast => "DefaultExceptNotLast",
-            CheckKind::DoNotAssignLambda => "DoNotAssignLambda",
-            CheckKind::DoNotUseBareExcept => "DoNotUseBareExcept",
-            CheckKind::DuplicateArgumentName => "DuplicateArgumentName",
-            CheckKind::FStringMissingPlaceholders => "FStringMissingPlaceholders",
-            CheckKind::ForwardAnnotationSyntaxError(_) => "ForwardAnnotationSyntaxError",
-            CheckKind::FutureFeatureNotDefined(_) => "FutureFeatureNotDefined",
-            CheckKind::IOError(_) => "IOError",
-            CheckKind::IfTuple => "IfTuple",
-            CheckKind::ImportShadowedByLoopVar(_, _) => "ImportShadowedByLoopVar",
-            CheckKind::ImportStarNotPermitted(_) => "ImportStarNotPermitted",
-            CheckKind::ImportStarUsage(_, _) => "ImportStarUsage",
-            CheckKind::ImportStarUsed(_) => "ImportStarUsed",
-            CheckKind::InvalidPrintSyntax => "InvalidPrintSyntax",
-            CheckKind::IsLiteral => "IsLiteral",
-            CheckKind::LateFutureImport => "LateFutureImport",
-            CheckKind::LineTooLong(_, _) => "LineTooLong",
-            CheckKind::ModuleImportNotAtTopOfFile => "ModuleImportNotAtTopOfFile",
-            CheckKind::MultiValueRepeatedKeyLiteral => "MultiValueRepeatedKeyLiteral",
-            CheckKind::MultiValueRepeatedKeyVariable(_) => "MultiValueRepeatedKeyVariable",
-            CheckKind::NoAssertEquals => "NoAssertEquals",
-            CheckKind::NoneComparison(_) => "NoneComparison",
-            CheckKind::NotInTest => "NotInTest",
-            CheckKind::NotIsTest => "NotIsTest",
-            CheckKind::RaiseNotImplemented => "RaiseNotImplemented",
-            CheckKind::ReturnOutsideFunction => "ReturnOutsideFunction",
-            CheckKind::SyntaxError(_) => "SyntaxError",
-            CheckKind::TooManyExpressionsInStarredAssignment => {
-                "TooManyExpressionsInStarredAssignment"
-            }
-            CheckKind::TrueFalseComparison(_, _) => "TrueFalseComparison",
-            CheckKind::TwoStarredExpressions => "TwoStarredExpressions",
-            CheckKind::TypeComparison => "TypeComparison",
-            CheckKind::UndefinedExport(_) => "UndefinedExport",
-            CheckKind::UndefinedLocal(_) => "UndefinedLocal",
-            CheckKind::UndefinedName(_) => "UndefinedName",
-            CheckKind::UnusedImport(_) => "UnusedImport",
-            CheckKind::UnusedVariable(_) => "UnusedVariable",
-            CheckKind::UselessObjectInheritance(_) => "UselessObjectInheritance",
-            CheckKind::YieldOutsideFunction => "YieldOutsideFunction",
-            CheckKind::UnusedNOQA(_) => "UnusedNOQA",
-            // flake8-builtins
-            CheckKind::BuiltinVariableShadowing(_) => "BuiltinVariableShadowing",
-            CheckKind::BuiltinArgumentShadowing(_) => "BuiltinArgumentShadowing",
-            CheckKind::BuiltinAttributeShadowing(_) => "BuiltinAttributeShadowing",
-            // flake8-super
-            CheckKind::SuperCallWithParameters => "SuperCallWithParameters",
-        }
-    }
-
    /// A four-letter shorthand code for the check.
    pub fn code(&self) -> &'static CheckCode {
        match self {
+            // pycodestyle errors
            CheckKind::AmbiguousClassName(_) => &CheckCode::E742,
            CheckKind::AmbiguousFunctionName(_) => &CheckCode::E743,
            CheckKind::AmbiguousVariableName(_) => &CheckCode::E741,
@@ -529,14 +362,13 @@ impl CheckKind {
            CheckKind::ModuleImportNotAtTopOfFile => &CheckCode::E402,
            CheckKind::MultiValueRepeatedKeyLiteral => &CheckCode::F601,
            CheckKind::MultiValueRepeatedKeyVariable(_) => &CheckCode::F602,
-            CheckKind::NoAssertEquals => &CheckCode::R002,
            CheckKind::NoneComparison(_) => &CheckCode::E711,
            CheckKind::NotInTest => &CheckCode::E713,
            CheckKind::NotIsTest => &CheckCode::E714,
            CheckKind::RaiseNotImplemented => &CheckCode::F901,
            CheckKind::ReturnOutsideFunction => &CheckCode::F706,
            CheckKind::SyntaxError(_) => &CheckCode::E999,
-            CheckKind::TooManyExpressionsInStarredAssignment => &CheckCode::F621,
+            CheckKind::ExpressionsInStarAssignment => &CheckCode::F621,
            CheckKind::TrueFalseComparison(_, _) => &CheckCode::E712,
            CheckKind::TwoStarredExpressions => &CheckCode::F622,
            CheckKind::TypeComparison => &CheckCode::E721,
@@ -544,30 +376,53 @@ impl CheckKind {
            CheckKind::UndefinedLocal(_) => &CheckCode::F823,
            CheckKind::UndefinedName(_) => &CheckCode::F821,
            CheckKind::UnusedImport(_) => &CheckCode::F401,
-            CheckKind::UnusedNOQA(_) => &CheckCode::M001,
            CheckKind::UnusedVariable(_) => &CheckCode::F841,
-            CheckKind::UselessObjectInheritance(_) => &CheckCode::R001,
            CheckKind::YieldOutsideFunction => &CheckCode::F704,
+            // pycodestyle warnings
+            CheckKind::NoNewLineAtEndOfFile => &CheckCode::W292,
            // flake8-builtins
            CheckKind::BuiltinVariableShadowing(_) => &CheckCode::A001,
            CheckKind::BuiltinArgumentShadowing(_) => &CheckCode::A002,
            CheckKind::BuiltinAttributeShadowing(_) => &CheckCode::A003,
+            // flake8-comprehensions
+            CheckKind::UnnecessaryGeneratorList => &CheckCode::C400,
+            CheckKind::UnnecessaryGeneratorSet => &CheckCode::C401,
+            CheckKind::UnnecessaryGeneratorDict => &CheckCode::C402,
+            CheckKind::UnnecessaryListComprehensionSet => &CheckCode::C403,
+            CheckKind::UnnecessaryListComprehensionDict => &CheckCode::C404,
+            CheckKind::UnnecessaryLiteralSet(_) => &CheckCode::C405,
+            CheckKind::UnnecessaryLiteralDict(_) => &CheckCode::C406,
+            CheckKind::UnnecessaryCollectionCall(_) => &CheckCode::C408,
            // flake8-super
            CheckKind::SuperCallWithParameters => &CheckCode::SPR001,
+            // flake8-print
+            CheckKind::PrintFound => &CheckCode::T201,
+            CheckKind::PPrintFound => &CheckCode::T203,
+            // pyupgrade
+            CheckKind::TypeOfPrimitive(_) => &CheckCode::U003,
+            CheckKind::UnnecessaryAbspath => &CheckCode::U002,
+            CheckKind::UselessMetaclassType => &CheckCode::U001,
+            CheckKind::NoAssertEquals => &CheckCode::U005,
+            CheckKind::UsePEP585Annotation(_) => &CheckCode::U006,
+            CheckKind::UsePEP604Annotation => &CheckCode::U007,
+            CheckKind::UselessObjectInheritance(_) => &CheckCode::U004,
+            // Meta
+            CheckKind::UnusedNOQA(_) => &CheckCode::M001,
        }
    }

    /// The body text for the check.
    pub fn body(&self) -> String {
        match self {
+            // pycodestyle errors
            CheckKind::AmbiguousClassName(name) => {
-                format!("ambiguous class name '{}'", name)
+                format!("Ambiguous class name: `{}`", name)
            }
            CheckKind::AmbiguousFunctionName(name) => {
-                format!("ambiguous function name '{}'", name)
+                format!("Ambiguous function name: `{}`", name)
            }
            CheckKind::AmbiguousVariableName(name) => {
-                format!("ambiguous variable name '{}'", name)
+                format!("Ambiguous variable name: `{}`", name)
            }
            CheckKind::AssertTuple => {
                "Assert test is a non-empty tuple, which is always `True`".to_string()
@@ -575,7 +430,7 @@ impl CheckKind {
            CheckKind::BreakOutsideLoop => "`break` outside loop".to_string(),
            CheckKind::ContinueOutsideLoop => "`continue` not properly in loop".to_string(),
            CheckKind::DefaultExceptNotLast => {
-                "an `except:` block as not the last exception handler".to_string()
+                "An `except:` block as not the last exception handler".to_string()
            }
            CheckKind::DoNotAssignLambda => {
                "Do not assign a lambda expression, use a def".to_string()
@@ -585,19 +440,21 @@ impl CheckKind {
                "Duplicate argument name in function definition".to_string()
            }
            CheckKind::ForwardAnnotationSyntaxError(body) => {
-                format!("syntax error in forward annotation '{body}'")
+                format!("Syntax error in forward annotation: `{body}`")
            }
            CheckKind::FStringMissingPlaceholders => {
                "f-string without any placeholders".to_string()
            }
            CheckKind::FutureFeatureNotDefined(name) => {
-                format!("future feature '{name}' is not defined")
+                format!("Future feature `{name}` is not defined")
            }
            CheckKind::IOError(message) => message.clone(),
            CheckKind::IfTuple => "If test is a tuple, which is always `True`".to_string(),
-            CheckKind::InvalidPrintSyntax => "use of >> is invalid with print function".to_string(),
+            CheckKind::InvalidPrintSyntax => {
+                "Use of `>>` is invalid with `print` function".to_string()
+            }
            CheckKind::ImportShadowedByLoopVar(name, line) => {
-                format!("import '{name}' from line {line} shadowed by loop variable")
+                format!("Import `{name}` from line {line} shadowed by loop variable")
            }
            CheckKind::ImportStarNotPermitted(name) => {
                format!("`from {name} import *` only allowed at module level")
@@ -606,11 +463,15 @@ impl CheckKind {
                format!("`from {name} import *` used; unable to detect undefined names")
            }
            CheckKind::ImportStarUsage(name, sources) => {
-                format!("'{name}' may be undefined, or defined from star imports: {sources}")
+                let sources = sources
+                    .iter()
+                    .map(|source| format!("`{}`", source))
+                    .join(", ");
+                format!("`{name}` may be undefined, or defined from star imports: {sources}")
            }
-            CheckKind::IsLiteral => "use ==/!= to compare constant literals".to_string(),
+            CheckKind::IsLiteral => "Use `==` and `!=` to compare constant literals".to_string(),
            CheckKind::LateFutureImport => {
-                "from __future__ imports must occur at the beginning of the file".to_string()
+                "`from __future__` imports must occur at the beginning of the file".to_string()
            }
            CheckKind::LineTooLong(length, limit) => {
                format!("Line too long ({length} > {limit} characters)")
@@ -624,9 +485,6 @@ impl CheckKind {
            CheckKind::MultiValueRepeatedKeyVariable(name) => {
                format!("Dictionary key `{name}` repeated")
            }
-            CheckKind::NoAssertEquals => {
-                "`assertEquals` is deprecated, use `assertEqual` instead".to_string()
-            }
            CheckKind::NoneComparison(op) => match op {
                RejectedCmpop::Eq => "Comparison to `None` should be `cond is None`".to_string(),
                RejectedCmpop::NotEq => {
@@ -639,11 +497,11 @@ impl CheckKind {
                "`raise NotImplemented` should be `raise NotImplementedError`".to_string()
            }
            CheckKind::ReturnOutsideFunction => {
-                "a `return` statement outside of a function/method".to_string()
+                "`return` statement outside of a function/method".to_string()
            }
            CheckKind::SyntaxError(message) => format!("SyntaxError: {message}"),
-            CheckKind::TooManyExpressionsInStarredAssignment => {
-                "too many expressions in star-unpacking assignment".to_string()
+            CheckKind::ExpressionsInStarAssignment => {
+                "Too many expressions in star-unpacking assignment".to_string()
            }
            CheckKind::TrueFalseComparison(value, op) => match *value {
                true => match op {
@@ -663,8 +521,8 @@ impl CheckKind {
                    }
                },
            },
-            CheckKind::TwoStarredExpressions => "two starred expressions in assignment".to_string(),
-            CheckKind::TypeComparison => "do not compare types, use `isinstance()`".to_string(),
+            CheckKind::TwoStarredExpressions => "Two starred expressions in assignment".to_string(),
+            CheckKind::TypeComparison => "Do not compare types, use `isinstance()`".to_string(),
            CheckKind::UndefinedExport(name) => {
                format!("Undefined name `{name}` in `__all__`")
            }
@@ -674,20 +532,18 @@ impl CheckKind {
            CheckKind::UndefinedName(name) => {
                format!("Undefined name `{name}`")
            }
-            CheckKind::UnusedImport(name) => format!("`{name}` imported but unused"),
+            CheckKind::UnusedImport(names) => {
+                let names = names.iter().map(|name| format!("`{name}`")).join(", ");
+                format!("{names} imported but unused")
+            }
            CheckKind::UnusedVariable(name) => {
                format!("Local variable `{name}` is assigned to but never used")
            }
-            CheckKind::UselessObjectInheritance(name) => {
-                format!("Class `{name}` inherits from object")
-            }
            CheckKind::YieldOutsideFunction => {
-                "a `yield` or `yield from` statement outside of a function/method".to_string()
+                "`yield` or `yield from` statement outside of a function/method".to_string()
            }
-            CheckKind::UnusedNOQA(code) => match code {
-                None => "Unused `noqa` directive".to_string(),
-                Some(code) => format!("Unused `noqa` directive for: {code}"),
-            },
+            // pycodestyle warnings
+            CheckKind::NoNewLineAtEndOfFile => "No newline at end of file".to_string(),
            // flake8-builtins
            CheckKind::BuiltinVariableShadowing(name) => {
                format!("Variable `{name}` is shadowing a python builtin")
@@ -696,12 +552,67 @@ impl CheckKind {
                format!("Argument `{name}` is shadowing a python builtin")
            }
            CheckKind::BuiltinAttributeShadowing(name) => {
-                format!("class attribute `{name}` is shadowing a python builtin")
+                format!("Class attribute `{name}` is shadowing a python builtin")
+            }
+            // flake8-comprehensions
+            CheckKind::UnnecessaryGeneratorList => {
+                "Unnecessary generator - rewrite as a list comprehension".to_string()
+            }
+            CheckKind::UnnecessaryGeneratorSet => {
+                "Unnecessary generator - rewrite as a set comprehension".to_string()
+            }
+            CheckKind::UnnecessaryGeneratorDict => {
+                "Unnecessary generator - rewrite as a dict comprehension".to_string()
+            }
+            CheckKind::UnnecessaryListComprehensionSet => {
+                "Unnecessary list comprehension - rewrite as a set comprehension".to_string()
+            }
+            CheckKind::UnnecessaryListComprehensionDict => {
+                "Unnecessary list comprehension - rewrite as a dict comprehension".to_string()
+            }
+            CheckKind::UnnecessaryLiteralSet(obj_type) => {
+                format!("Unnecessary {obj_type} literal - rewrite as a set literal")
+            }
+            CheckKind::UnnecessaryLiteralDict(obj_type) => {
+                format!("Unnecessary {obj_type} literal - rewrite as a dict literal")
+            }
+            CheckKind::UnnecessaryCollectionCall(obj_type) => {
+                format!("Unnecessary {obj_type} call - rewrite as a literal")
            }
            // flake8-super
            CheckKind::SuperCallWithParameters => {
                "Use `super()` instead of `super(__class__, self)`".to_string()
            }
+            // flake8-print
+            CheckKind::PrintFound => "`print` found".to_string(),
+            CheckKind::PPrintFound => "`pprint` found".to_string(),
+            // pyupgrade
+            CheckKind::TypeOfPrimitive(primitive) => {
+                format!("Use `{}` instead of `type(...)`", primitive.builtin())
+            }
+            CheckKind::UnnecessaryAbspath => {
+                "`abspath(__file__)` is unnecessary in Python 3.9 and later".to_string()
+            }
+            CheckKind::UselessMetaclassType => "`__metaclass__ = type` is implied".to_string(),
+            CheckKind::NoAssertEquals => {
+                "`assertEquals` is deprecated, use `assertEqual` instead".to_string()
+            }
+            CheckKind::UselessObjectInheritance(name) => {
+                format!("Class `{name}` inherits from object")
+            }
+            CheckKind::UsePEP585Annotation(name) => {
+                format!(
+                    "Use `{}` instead of `{}` for type annotations",
+                    name.to_lowercase(),
+                    name,
+                )
+            }
+            CheckKind::UsePEP604Annotation => "Use `X | Y` for type annotations".to_string(),
+            // Meta
+            CheckKind::UnusedNOQA(code) => match code {
+                None => "Unused `noqa` directive".to_string(),
+                Some(code) => format!("Unused `noqa` directive for: {code}"),
+            },
        }
    }

@@ -710,9 +621,17 @@ impl CheckKind {
        matches!(
            self,
            CheckKind::NoAssertEquals
-                | CheckKind::UselessObjectInheritance(_)
-                | CheckKind::UnusedNOQA(_)
+                | CheckKind::PPrintFound
+                | CheckKind::PrintFound
                | CheckKind::SuperCallWithParameters
+                | CheckKind::TypeOfPrimitive(_)
+                | CheckKind::UnnecessaryAbspath
+                | CheckKind::UnusedImport(_)
+                | CheckKind::UnusedNOQA(_)
+                | CheckKind::UselessMetaclassType
+                | CheckKind::UselessObjectInheritance(_)
+                | CheckKind::UsePEP585Annotation(_)
+                | CheckKind::UsePEP604Annotation
        )
    }
 }
@@ -747,3 +666,25 @@ impl Check {
        self.fix = Some(fix);
    }
 }
+
+#[cfg(test)]
+mod tests {
+    use std::str::FromStr;
+
+    use anyhow::Result;
+    use strum::IntoEnumIterator;
+
+    use crate::checks::CheckCode;
+
+    #[test]
+    fn check_code_serialization() -> Result<()> {
+        for check_code in CheckCode::iter() {
+            assert!(
+                CheckCode::from_str(check_code.as_ref()).is_ok(),
+                "{:?} could not be round-trip serialized.",
+                check_code
+            );
+        }
+        Ok(())
+    }
+}
--- 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/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 +15,14 @@ pub mod cache;
 pub mod check_ast;
 mod check_lines;
 pub mod checks;
+pub mod cli;
+pub mod code_gen;
 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 +42,7 @@ 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;
@@ -321,6 +339,42 @@ mod tests {
        Ok(())
    }

+    #[test]
+    fn w292_0() -> Result<()> {
+        let mut checks = check_path(
+            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() -> Result<()> {
        let mut checks = check_path(
@@ -672,30 +726,6 @@ mod tests {
        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(
@@ -768,6 +798,102 @@ mod tests {
        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 spr001() -> Result<()> {
        let mut checks = check_path(
@@ -779,4 +905,112 @@ mod tests {
        insta::assert_yaml_snapshot!(checks);
        Ok(())
    }
+
+    #[test]
+    fn t201() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/T201.py"),
+            &settings::Settings::for_rule(CheckCode::T201),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(checks);
+        Ok(())
+    }
+
+    #[test]
+    fn t203() -> Result<()> {
+        let mut checks = check_path(
+            Path::new("./resources/test/fixtures/T203.py"),
+            &settings::Settings::for_rule(CheckCode::T203),
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        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(())
+    }
 }
--- 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
@@ -47,10 +47,9 @@ pub fn extract_noqa_directive(line: &str) -> Directive {
 pub fn extract_noqa_line_for(lxr: &[LexResult]) -> Vec<usize> {
    let mut noqa_line_for: Vec<usize> = vec![];

-    let mut last_is_string = false;
-    let mut last_seen = usize::MIN;
    let mut min_line = usize::MAX;
    let mut max_line = usize::MIN;
+    let mut in_string = false;

    for (start, tok, end) in lxr.iter().flatten() {
        if matches!(tok, Tok::EndOfFile) {
@@ -62,29 +61,20 @@ pub fn extract_noqa_line_for(lxr: &[LexResult]) -> Vec<usize> {
            max_line = max(max_line, start.row());

            // For now, we only care about preserving noqa directives across multi-line strings.
-            if last_is_string {
-                noqa_line_for.extend(vec![max_line; (max_line + 1) - min_line]);
-            } else {
-                for i in (min_line - 1)..(max_line) {
+            if in_string {
+                for i in (noqa_line_for.len())..(min_line - 1) {
                    noqa_line_for.push(i + 1);
                }
+                noqa_line_for.extend(vec![max_line; (max_line + 1) - min_line]);
            }

            min_line = usize::MAX;
            max_line = usize::MIN;
        } else {
-            // Handle empty lines.
-            if start.row() > last_seen {
-                for i in last_seen..(start.row() - 1) {
-                    noqa_line_for.push(i + 1);
-                }
-            }
-
            min_line = min(min_line, start.row());
            max_line = max(max_line, end.row());
        }
-        last_seen = start.row();
-        last_is_string = matches!(tok, Tok::String { .. });
+        in_string = matches!(tok, Tok::String { .. });
    }

    noqa_line_for
@@ -114,9 +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);
        }
    }
@@ -137,7 +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');
@@ -173,6 +161,8 @@ mod tests {

    #[test]
    fn extraction() -> Result<()> {
+        let empty: Vec<usize> = Default::default();
+
        let lxr: Vec<LexResult> = lexer::make_tokenizer(
            "x = 1
 y = 2
@@ -180,7 +170,7 @@ z = x + 1",
        )
        .collect();
        println!("{:?}", extract_noqa_line_for(&lxr));
-        assert_eq!(extract_noqa_line_for(&lxr), vec![1, 2, 3]);
+        assert_eq!(extract_noqa_line_for(&lxr), empty);

        let lxr: Vec<LexResult> = lexer::make_tokenizer(
            "
@@ -190,7 +180,7 @@ z = x + 1",
        )
        .collect();
        println!("{:?}", extract_noqa_line_for(&lxr));
-        assert_eq!(extract_noqa_line_for(&lxr), vec![1, 2, 3, 4]);
+        assert_eq!(extract_noqa_line_for(&lxr), empty);

        let lxr: Vec<LexResult> = lexer::make_tokenizer(
            "x = 1
@@ -200,7 +190,7 @@ z = x + 1
        )
        .collect();
        println!("{:?}", extract_noqa_line_for(&lxr));
-        assert_eq!(extract_noqa_line_for(&lxr), vec![1, 2, 3]);
+        assert_eq!(extract_noqa_line_for(&lxr), empty);

        let lxr: Vec<LexResult> = lexer::make_tokenizer(
            "x = 1
@@ -211,7 +201,7 @@ z = x + 1
        )
        .collect();
        println!("{:?}", extract_noqa_line_for(&lxr));
-        assert_eq!(extract_noqa_line_for(&lxr), vec![1, 2, 3, 4]);
+        assert_eq!(extract_noqa_line_for(&lxr), empty);

        let lxr: Vec<LexResult> = lexer::make_tokenizer(
            "x = '''abc
@@ -222,7 +212,28 @@ y = 2
 z = x + 1",
        )
        .collect();
-        assert_eq!(extract_noqa_line_for(&lxr), vec![4, 4, 4, 4, 5, 6]);
+        assert_eq!(extract_noqa_line_for(&lxr), vec![4, 4, 4, 4]);
+
+        let lxr: Vec<LexResult> = lexer::make_tokenizer(
+            "x = 1
+y = '''abc
+def
+ghi
+'''
+z = 2",
+        )
+        .collect();
+        assert_eq!(extract_noqa_line_for(&lxr), vec![1, 5, 5, 5, 5]);
+
+        let lxr: Vec<LexResult> = lexer::make_tokenizer(
+            "x = 1
+y = '''abc
+def
+ghi
+'''",
+        )
+        .collect();
+        assert_eq!(extract_noqa_line_for(&lxr), vec![1, 5, 5, 5, 5]);

        Ok(())
    }
--- a/src/plugins.rs
+++ b/src/plugins.rs
@@ -0,0 +1,25 @@
+mod assert_equals;
+mod assert_tuple;
+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;
+
+pub use assert_equals::assert_equals;
+pub use assert_tuple::assert_tuple;
+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;
--- a/src/plugins/assert_equals.rs
+++ b/src/plugins/assert_equals.rs
@@ -0,0 +1,23 @@
+use rustpython_ast::{Expr, Location};
+
+use crate::ast::checks;
+use crate::autofix::fixer;
+use crate::check_ast::Checker;
+use crate::checks::Fix;
+
+pub fn assert_equals(checker: &mut Checker, expr: &Expr) {
+    if let Some(mut check) = checks::check_assert_equals(expr) {
+        if matches!(checker.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,
+            });
+        }
+        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::checks;
+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) =
+        checks::check_assert_tuple(test, checker.locate_check(Range::from_located(stmt)))
+    {
+        checker.add_check(check);
+    }
+}
--- a/src/plugins/if_tuple.rs
+++ b/src/plugins/if_tuple.rs
@@ -0,0 +1,13 @@
+use rustpython_ast::{Expr, Stmt};
+
+use crate::ast::checks;
+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) =
+        checks::check_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::checks;
+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) = checks::check_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::checks;
+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 checks::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) = checks::check_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::checks;
+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) =
+        checks::check_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 +1,25 @@
+use rustpython_ast::Expr;
+
+use crate::ast::checks;
+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) = checks::check_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 +1,77 @@
+use anyhow::{anyhow, Result};
+use rustpython_ast::{Expr, ExprKind};
+
+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;
+
+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(slice, 0) {
+                if let Ok(content) = generator.generate() {
+                    check.amend(Fix {
+                        content: format!("{} | None", 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, .. } => {
+                    // Multiple arguments.
+                    let parts: Result<Vec<String>> = elts
+                        .iter()
+                        .map(|expr| {
+                            let mut generator = SourceGenerator::new();
+                            generator
+                                .unparse_expr(expr, 0)
+                                .map_err(|_| anyhow!("Failed to parse."))?;
+                            generator
+                                .generate()
+                                .map_err(|_| anyhow!("Failed to generate."))
+                        })
+                        .collect();
+                    if let Ok(parts) = parts {
+                        let content = parts.join(" | ");
+                        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::checks;
+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) = checks::check_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::checks;
+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) = checks::check_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)]
@@ -175,11 +184,14 @@ 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 +209,14 @@ 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 +234,14 @@ 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 +259,14 @@ 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 +275,7 @@ select = ["E501"]
            r#"
 [tool.black]
 [tool.ruff]
+extend-select = ["M001"]
 ignore = ["E501"]
 "#,
        )?;
@@ -263,11 +285,14 @@ 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 +350,18 @@ 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__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__f401.snap
+++ b/src/snapshots/rufflintertests__f401.snap
@@ -3,30 +3,129 @@ source: src/linter.rs
 expression: checks
 ---
 - kind:
-    UnusedImport: functools
+    UnusedImport:
+      - functools
  location:
-    row: 3
+    row: 2
    column: 1
  end_location:
-    row: 3
-    column: 17
-  fix: ~
+    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
+    UnusedImport:
+      - collections.OrderedDict
  location:
-    row: 5
+    row: 4
    column: 1
  end_location:
-    row: 9
+    row: 8
    column: 2
-  fix: ~
+  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
+    UnusedImport:
+      - logging.handlers
  location:
-    row: 13
+    row: 12
    column: 1
  end_location:
-    row: 13
+    row: 12
    column: 24
-  fix: ~
+  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__f405.snap
+++ b/src/snapshots/rufflintertests__f405.snap
@@ -5,7 +5,7 @@ expression: checks
 - kind:
    ImportStarUsage:
      - name
-      - mymodule
+      - - mymodule
  location:
    row: 5
    column: 11
@@ -16,7 +16,7 @@ expression: checks
 - kind:
    ImportStarUsage:
      - a
-      - mymodule
+      - - mymodule
  location:
    row: 11
    column: 1
--- a/src/snapshots/rufflintertests__f722.snap
+++ b/src/snapshots/rufflintertests__f722.snap
@@ -9,6 +9,6 @@ expression: checks
    column: 13
  end_location:
    row: 9
-    column: 17
+    column: 16
  fix: ~

--- a/src/snapshots/rufflintertests__f821.snap
+++ b/src/snapshots/rufflintertests__f821.snap
@@ -45,7 +45,7 @@ expression: checks
    column: 5
  end_location:
    row: 58
-    column: 9
+    column: 8
  fix: ~
 - kind:
    UndefinedName: TOMATO
@@ -74,4 +74,31 @@ expression: checks
    row: 89
    column: 9
  fix: ~
+- kind:
+    UndefinedName: PEP593Test123
+  location:
+    row: 114
+    column: 10
+  end_location:
+    row: 114
+    column: 23
+  fix: ~
+- kind:
+    UndefinedName: foo
+  location:
+    row: 122
+    column: 15
+  end_location:
+    row: 122
+    column: 18
+  fix: ~
+- kind:
+    UndefinedName: bar
+  location:
+    row: 122
+    column: 22
+  end_location:
+    row: 122
+    column: 25
+  fix: ~

--- a/src/snapshots/rufflintertests__future_annotations.snap
+++ b/src/snapshots/rufflintertests__future_annotations.snap
@@ -3,21 +3,30 @@ source: src/linter.rs
 expression: checks
 ---
 - kind:
-    UnusedImport: models.Nut
+    UnusedImport:
+      - models.Nut
  location:
    row: 5
    column: 1
  end_location:
-    row: 5
-    column: 30
-  fix: ~
+    row: 8
+    column: 2
+  fix:
+    content: "from models import (\n    Fruit,\n)"
+    location:
+      row: 5
+      column: 1
+    end_location:
+      row: 8
+      column: 2
+    applied: false
 - kind:
    UndefinedName: Bar
  location:
-    row: 22
+    row: 25
    column: 19
  end_location:
-    row: 22
+    row: 25
    column: 22
  fix: ~

--- a/src/snapshots/rufflintertests__spr001.snap
+++ b/src/snapshots/rufflintertests__spr001.snap
@@ -50,4 +50,36 @@ expression: checks
      row: 22
      column: 10
    applied: false
+- kind: SuperCallWithParameters
+  location:
+    row: 36
+    column: 9
+  end_location:
+    row: 36
+    column: 29
+  fix:
+    content: super()
+    location:
+      row: 36
+      column: 9
+    end_location:
+      row: 36
+      column: 29
+    applied: false
+- kind: SuperCallWithParameters
+  location:
+    row: 50
+    column: 13
+  end_location:
+    row: 50
+    column: 33
+  fix:
+    content: super()
+    location:
+      row: 50
+      column: 13
+    end_location:
+      row: 50
+      column: 33
+    applied: false

--- a/src/snapshots/rufflintertests__t201.snap
+++ b/src/snapshots/rufflintertests__t201.snap
@@ -0,0 +1,21 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: PrintFound
+  location:
+    row: 1
+    column: 1
+  end_location:
+    row: 1
+    column: 23
+  fix:
+    content: ""
+    location:
+      row: 1
+      column: 1
+    end_location:
+      row: 2
+      column: 1
+    applied: false
+
--- a/src/snapshots/rufflintertests__t203.snap
+++ b/src/snapshots/rufflintertests__t203.snap
@@ -0,0 +1,37 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: PPrintFound
+  location:
+    row: 3
+    column: 1
+  end_location:
+    row: 3
+    column: 24
+  fix:
+    content: ""
+    location:
+      row: 3
+      column: 1
+    end_location:
+      row: 4
+      column: 1
+    applied: false
+- kind: PPrintFound
+  location:
+    row: 8
+    column: 1
+  end_location:
+    row: 8
+    column: 31
+  fix:
+    content: ""
+    location:
+      row: 8
+      column: 1
+    end_location:
+      row: 9
+      column: 1
+    applied: false
+
--- a/src/snapshots/rufflintertests__u001.snap
+++ b/src/snapshots/rufflintertests__u001.snap
@@ -0,0 +1,37 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: UselessMetaclassType
+  location:
+    row: 2
+    column: 5
+  end_location:
+    row: 2
+    column: 25
+  fix:
+    content: pass
+    location:
+      row: 2
+      column: 5
+    end_location:
+      row: 2
+      column: 25
+    applied: false
+- kind: UselessMetaclassType
+  location:
+    row: 6
+    column: 5
+  end_location:
+    row: 6
+    column: 25
+  fix:
+    content: ""
+    location:
+      row: 6
+      column: 1
+    end_location:
+      row: 7
+      column: 1
+    applied: false
+
--- a/src/snapshots/rufflintertests__u002.snap
+++ b/src/snapshots/rufflintertests__u002.snap
@@ -0,0 +1,53 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: UnnecessaryAbspath
+  location:
+    row: 3
+    column: 5
+  end_location:
+    row: 3
+    column: 22
+  fix:
+    content: __file__
+    location:
+      row: 3
+      column: 5
+    end_location:
+      row: 3
+      column: 22
+    applied: false
+- kind: UnnecessaryAbspath
+  location:
+    row: 9
+    column: 5
+  end_location:
+    row: 9
+    column: 30
+  fix:
+    content: __file__
+    location:
+      row: 9
+      column: 5
+    end_location:
+      row: 9
+      column: 30
+    applied: false
+- kind: UnnecessaryAbspath
+  location:
+    row: 15
+    column: 5
+  end_location:
+    row: 15
+    column: 27
+  fix:
+    content: __file__
+    location:
+      row: 15
+      column: 5
+    end_location:
+      row: 15
+      column: 27
+    applied: false
+
--- a/src/snapshots/rufflintertests__u003.snap
+++ b/src/snapshots/rufflintertests__u003.snap
@@ -0,0 +1,90 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    TypeOfPrimitive: Str
+  location:
+    row: 1
+    column: 1
+  end_location:
+    row: 1
+    column: 9
+  fix:
+    content: str
+    location:
+      row: 1
+      column: 1
+    end_location:
+      row: 1
+      column: 9
+    applied: false
+- kind:
+    TypeOfPrimitive: Bytes
+  location:
+    row: 2
+    column: 1
+  end_location:
+    row: 2
+    column: 10
+  fix:
+    content: bytes
+    location:
+      row: 2
+      column: 1
+    end_location:
+      row: 2
+      column: 10
+    applied: false
+- kind:
+    TypeOfPrimitive: Int
+  location:
+    row: 3
+    column: 1
+  end_location:
+    row: 3
+    column: 8
+  fix:
+    content: int
+    location:
+      row: 3
+      column: 1
+    end_location:
+      row: 3
+      column: 8
+    applied: false
+- kind:
+    TypeOfPrimitive: Float
+  location:
+    row: 4
+    column: 1
+  end_location:
+    row: 4
+    column: 9
+  fix:
+    content: float
+    location:
+      row: 4
+      column: 1
+    end_location:
+      row: 4
+      column: 9
+    applied: false
+- kind:
+    TypeOfPrimitive: Complex
+  location:
+    row: 5
+    column: 1
+  end_location:
+    row: 5
+    column: 9
+  fix:
+    content: complex
+    location:
+      row: 5
+      column: 1
+    end_location:
+      row: 5
+      column: 9
+    applied: false
+
--- a/src/snapshots/rufflintertestsu004.snap
+++ b/src/snapshots/rufflintertestsu004.snap
--- a/src/snapshots/rufflintertestsu005.snap
+++ b/src/snapshots/rufflintertestsu005.snap
--- a/src/snapshots/rufflintertests__u006.snap
+++ b/src/snapshots/rufflintertests__u006.snap
@@ -0,0 +1,39 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind:
+    UsePEP585Annotation: List
+  location:
+    row: 4
+    column: 10
+  end_location:
+    row: 4
+    column: 14
+  fix:
+    content: list
+    location:
+      row: 4
+      column: 10
+    end_location:
+      row: 4
+      column: 14
+    applied: false
+- kind:
+    UsePEP585Annotation: List
+  location:
+    row: 11
+    column: 10
+  end_location:
+    row: 11
+    column: 21
+  fix:
+    content: list
+    location:
+      row: 11
+      column: 10
+    end_location:
+      row: 11
+      column: 21
+    applied: false
+
--- a/src/snapshots/rufflintertests__u007.snap
+++ b/src/snapshots/rufflintertests__u007.snap
@@ -0,0 +1,133 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: UsePEP604Annotation
+  location:
+    row: 4
+    column: 10
+  end_location:
+    row: 4
+    column: 23
+  fix:
+    content: str | None
+    location:
+      row: 4
+      column: 10
+    end_location:
+      row: 4
+      column: 23
+    applied: false
+- kind: UsePEP604Annotation
+  location:
+    row: 11
+    column: 10
+  end_location:
+    row: 11
+    column: 30
+  fix:
+    content: str | None
+    location:
+      row: 11
+      column: 10
+    end_location:
+      row: 11
+      column: 30
+    applied: false
+- kind: UsePEP604Annotation
+  location:
+    row: 18
+    column: 10
+  end_location:
+    row: 18
+    column: 46
+  fix:
+    content: "str | int | Union[float, bytes]"
+    location:
+      row: 18
+      column: 10
+    end_location:
+      row: 18
+      column: 46
+    applied: false
+- kind: UsePEP604Annotation
+  location:
+    row: 18
+    column: 26
+  end_location:
+    row: 18
+    column: 45
+  fix:
+    content: float | bytes
+    location:
+      row: 18
+      column: 26
+    end_location:
+      row: 18
+      column: 45
+    applied: false
+- kind: UsePEP604Annotation
+  location:
+    row: 25
+    column: 10
+  end_location:
+    row: 25
+    column: 32
+  fix:
+    content: str | int
+    location:
+      row: 25
+      column: 10
+    end_location:
+      row: 25
+      column: 32
+    applied: false
+- kind: UsePEP604Annotation
+  location:
+    row: 32
+    column: 11
+  end_location:
+    row: 32
+    column: 47
+  fix:
+    content: "str | int | Union[float, bytes]"
+    location:
+      row: 32
+      column: 11
+    end_location:
+      row: 32
+      column: 47
+    applied: false
+- kind: UsePEP604Annotation
+  location:
+    row: 32
+    column: 11
+  end_location:
+    row: 32
+    column: 47
+  fix:
+    content: float | bytes
+    location:
+      row: 32
+      column: 11
+    end_location:
+      row: 32
+      column: 47
+    applied: false
+- kind: UsePEP604Annotation
+  location:
+    row: 39
+    column: 11
+  end_location:
+    row: 39
+    column: 33
+  fix:
+    content: str | int
+    location:
+      row: 39
+      column: 11
+    end_location:
+      row: 39
+      column: 33
+    applied: false
+
--- a/src/snapshots/rufflintertests__w292.snap
+++ b/src/snapshots/rufflintertests__w292.snap
@@ -0,0 +1,13 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: NoNewLineAtEndOfFile
+  location:
+    row: 2
+    column: 9
+  end_location:
+    row: 2
+    column: 9
+  fix: ~
+
--- a/src/snapshots/rufflintertests__w292_0.snap
+++ b/src/snapshots/rufflintertests__w292_0.snap
@@ -0,0 +1,13 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: NoNewLineAtEndOfFile
+  location:
+    row: 2
+    column: 9
+  end_location:
+    row: 2
+    column: 9
+  fix: ~
+
--- a/src/snapshots/rufflintertests__w292_1.snap
+++ b/src/snapshots/rufflintertests__w292_1.snap
@@ -0,0 +1,6 @@
+---
+source: src/linter.rs
+expression: checks
+---
+[]
+
--- a/src/snapshots/rufflintertests__w292_2.snap
+++ b/src/snapshots/rufflintertests__w292_2.snap
@@ -0,0 +1,6 @@
+---
+source: src/linter.rs
+expression: checks
+---
+[]
+
Author	SHA1	Message	Date
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
Charlie Marsh	406491a3a2	Bump version to 0.0.53	2022-10-04 08:56:46 -04:00
Charlie Marsh	bfae262359	Simplify noqa extraction logic (#320 )	2022-10-04 08:56:14 -04:00
Charlie Marsh	af894f290f	Disable plugin-based rules by default (#318 )	2022-10-04 08:28:46 -04:00
Charlie Marsh	c901742244	Add plugins mention to README (#309 )	2022-10-03 17:23:53 -04:00
Charlie Marsh	7e4faf4b69	Implement flake8-print (#308 )	2022-10-03 17:19:56 -04:00
Charlie Marsh	31a0b20271	Bump version to 0.0.52	2022-10-03 15:22:58 -04:00
Charlie Marsh	0966bf2c66	Handle multi-import lines (#307 )	2022-10-03 15:22:46 -04:00
Charlie Marsh	64d8e25528	Bump version to 0.0.51	2022-10-03 14:08:39 -04:00
Charlie Marsh	b049cced04	Automatically remove unused imports (#298 )	2022-10-03 14:08:16 -04:00
Charlie Marsh	bc335f839e	Visit lambda arguments prior to deferral (#303 )	2022-10-02 20:54:02 -04:00