Bump version to 0.0.215

Remove assertNotContains (#1729 )
`unittest.TestCase` doens't have a method named `assertNotContains`.
2023-01-07 22:17:29 -05:00 · 2023-01-07 22:15:48 -05:00 · 2023-01-07 22:03:48 -05:00 · 2023-01-07 22:01:27 -05:00 · 2023-01-07 22:01:20 -05:00 · 2023-01-07 21:54:19 -05:00
526 changed files with 18800 additions and 11445 deletions
--- a/.github/CODE_OF_CONDUCT.md
+++ b/.github/CODE_OF_CONDUCT.md
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -56,33 +56,35 @@ prior to merging.

 There are four phases to adding a new lint rule:

-1. Define the rule in `src/registry.rs`.
-2. Define the _logic_ for triggering the rule in `src/checkers/ast.rs` (for AST-based checks),
+1. Define the violation in `src/violations.rs` (e.g., `ModuleImportNotAtTopOfFile`).
+2. Map the violation to a code in `src/registry.rs` (e.g., `E402`).
+3. Define the _logic_ for triggering the violation in `src/checkers/ast.rs` (for AST-based checks),
   `src/checkers/tokens.rs` (for token-based checks), or `src/checkers/lines.rs` (for text-based checks).
-3. Add a test fixture.
-4. Update the generated files (documentation and generated code).
+4. Add a test fixture.
+5. Update the generated files (documentation and generated code).

-To define the rule, open up `src/registry.rs`. You'll need to define both a `CheckCode` and
-`CheckKind`. As an example, you can grep for `E402` and `ModuleImportNotAtTopOfFile`, and follow the
-pattern implemented therein.
+To define the violation, open up `src/violations.rs`, and define a new struct using the
+`define_violation!` macro. There are plenty of examples in that file, so feel free to pattern-match
+against the existing structs.

-To trigger the rule, you'll likely want to augment the logic in `src/checkers/ast.rs`, which defines
-the Python AST visitor, responsible for iterating over the abstract syntax tree and collecting
-lint-rule violations as it goes. If you need to inspect the AST, you can run
-`cargo +nightly dev print-ast` with a Python file. Grep for the `Check::new` invocations to
-understand how other, similar rules are implemented.
+To trigger the violation, you'll likely want to augment the logic in `src/checkers/ast.rs`, which
+defines the Python AST visitor, responsible for iterating over the abstract syntax tree and
+collecting diagnostics as it goes.
+
+If you need to inspect the AST, you can run `cargo +nightly dev print-ast` with a Python file. Grep
+for the `Check::new` invocations to understand how other, similar rules are implemented.

 To add a test fixture, create a file under `resources/test/fixtures/[plugin-name]`, named to match
-the `CheckCode` you defined earlier (e.g., `E402.py`). This file should contain a variety of
+the code 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 `cargo +nightly dev generate-all` to generate the code for your new fixture. Then run Ruff
 locally with (e.g.) `cargo run resources/test/fixtures/pycodestyle/E402.py --no-cache --select E402`.

 Once you're satisfied with the output, codify the behavior as a snapshot test by adding a new
-`test_case` macro in the relevant `src/[plugin-name]/mod.rs` file. Then, run `cargo test`. Your
-test will fail, but you'll be prompted to follow-up with `cargo insta review`. Accept the generated
-snapshot, then commit the snapshot file alongside the rest of your changes.
+`test_case` macro in the relevant `src/[plugin-name]/mod.rs` file. Then, run `cargo test --all`.
+Your test will fail, but you'll be prompted to follow-up with `cargo insta review`. Accept the
+generated snapshot, then commit the snapshot file alongside the rest of your changes.

 Finally, regenerate the documentation and generated code with `cargo +nightly dev generate-all`.

--- a/.github/ISSUE_TEMPLATE.md
+++ b/.github/ISSUE_TEMPLATE.md
@@ -0,0 +1,10 @@
+<!--
+Thank you for taking the time to report an issue! We're glad to have you involved with Ruff.
+
+If you're filing a bug report, please consider including the following information:
+
+- A minimal code snippet that reproduces the bug.
+- The command you invoked (e.g., `ruff /path/to/file.py --fix`), ideally including the `--isolated` flag.
+- The current Ruff settings (any relevant sections from your `pyproject.toml`).
+- The current Ruff version (`ruff --version`).
+-->
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -6,6 +6,10 @@ on:
  pull_request:
    branches: [main]

+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
 env:
  CARGO_INCREMENTAL: 0
  CARGO_NET_RETRY: 10
@@ -38,9 +42,8 @@ jobs:
      - run: cargo build --all --release
      - run: ./target/release/ruff_dev generate-all
      - run: git diff --quiet README.md || echo "::error file=README.md::This file is outdated. Run 'cargo +nightly dev generate-all'."
-      - run: git diff --quiet src/registry_gen.rs || echo "::error file=src/registry_gen.rs::This file is outdated. Run 'cargo +nightly dev generate-all'."
      - run: git diff --quiet ruff.schema.json || echo "::error file=ruff.schema.json::This file is outdated. Run 'cargo +nightly dev generate-all'."
-      - run: git diff --exit-code -- README.md src/registry_gen.rs ruff.schema.json
+      - run: git diff --exit-code -- README.md ruff.schema.json

  cargo-fmt:
    name: "cargo fmt"
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
  - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: v0.0.210
+    rev: v0.0.215
    hooks:
      - id: ruff

--- a/Cargo.lock
+++ b/Cargo.lock
@@ -367,15 +367,6 @@ dependencies = [
 "winapi",
 ]

-[[package]]
-name = "codegen"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ff61280aed771c3070e7dcc9e050c66f1eb1e3b96431ba66f9f74641d02fc41d"
-dependencies = [
- "indexmap",
-]
-
 [[package]]
 name = "codespan-reporting"
 version = "0.11.1"
@@ -744,7 +735,7 @@ checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"

 [[package]]
 name = "flake8-to-ruff"
-version = "0.0.210-dev.0"
+version = "0.0.215-dev.0"
 dependencies = [
 "anyhow",
 "clap 4.0.32",
@@ -757,7 +748,7 @@ dependencies = [
 "serde_json",
 "strum",
 "strum_macros",
- "toml",
+ "toml_edit",
 ]

 [[package]]
@@ -1294,6 +1285,15 @@ dependencies = [
 "version_check",
 ]

+[[package]]
+name = "nom8"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae01545c9c7fc4486ab7debaf2aad7003ac19431791868fb2e8066df97fad2f8"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "notify"
 version = "5.0.0"
@@ -1365,9 +1365,9 @@ dependencies = [

 [[package]]
 name = "once_cell"
-version = "1.16.0"
+version = "1.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86f0b0d4bf799edbc74508c1e8bf170ff5f41238e5f8225603ca7caaae2b7860"
+checksum = "6f61fba1741ea2b3d6a1e3178721804bb716a68a6aeba1149b5d52e3d464ea66"

 [[package]]
 name = "oorandom"
@@ -1873,7 +1873,7 @@ dependencies = [

 [[package]]
 name = "ruff"
-version = "0.0.210"
+version = "0.0.215"
 dependencies = [
 "annotate-snippets 0.9.1",
 "anyhow",
@@ -1931,7 +1931,7 @@ dependencies = [
 "test-case",
 "textwrap",
 "titlecase",
- "toml",
+ "toml_edit",
 "update-informer",
 "ureq",
 "walkdir",
@@ -1941,11 +1941,10 @@ dependencies = [

 [[package]]
 name = "ruff_dev"
-version = "0.0.210"
+version = "0.0.215"
 dependencies = [
 "anyhow",
 "clap 4.0.32",
- "codegen",
 "itertools",
 "libcst",
 "once_cell",
@@ -1962,8 +1961,9 @@ dependencies = [

 [[package]]
 name = "ruff_macros"
-version = "0.0.210"
+version = "0.0.215"
 dependencies = [
+ "once_cell",
 "proc-macro2",
 "quote",
 "syn",
@@ -2005,7 +2005,7 @@ dependencies = [
 [[package]]
 name = "rustpython-ast"
 version = "0.1.0"
-source = "git+https://github.com/RustPython/RustPython.git?rev=4d53c7cb27c0379adf8b51c4d3d0d2174f41d590#4d53c7cb27c0379adf8b51c4d3d0d2174f41d590"
+source = "git+https://github.com/RustPython/RustPython.git?rev=d532160333ffeb6dbeca2c2728c2391cd1e53b7f#d532160333ffeb6dbeca2c2728c2391cd1e53b7f"
 dependencies = [
 "num-bigint",
 "rustpython-common",
@@ -2015,7 +2015,7 @@ dependencies = [
 [[package]]
 name = "rustpython-common"
 version = "0.0.0"
-source = "git+https://github.com/RustPython/RustPython.git?rev=4d53c7cb27c0379adf8b51c4d3d0d2174f41d590#4d53c7cb27c0379adf8b51c4d3d0d2174f41d590"
+source = "git+https://github.com/RustPython/RustPython.git?rev=d532160333ffeb6dbeca2c2728c2391cd1e53b7f#d532160333ffeb6dbeca2c2728c2391cd1e53b7f"
 dependencies = [
 "ascii",
 "bitflags",
@@ -2040,7 +2040,7 @@ dependencies = [
 [[package]]
 name = "rustpython-compiler-core"
 version = "0.1.2"
-source = "git+https://github.com/RustPython/RustPython.git?rev=4d53c7cb27c0379adf8b51c4d3d0d2174f41d590#4d53c7cb27c0379adf8b51c4d3d0d2174f41d590"
+source = "git+https://github.com/RustPython/RustPython.git?rev=d532160333ffeb6dbeca2c2728c2391cd1e53b7f#d532160333ffeb6dbeca2c2728c2391cd1e53b7f"
 dependencies = [
 "bincode",
 "bitflags",
@@ -2057,7 +2057,7 @@ dependencies = [
 [[package]]
 name = "rustpython-parser"
 version = "0.1.2"
-source = "git+https://github.com/RustPython/RustPython.git?rev=4d53c7cb27c0379adf8b51c4d3d0d2174f41d590#4d53c7cb27c0379adf8b51c4d3d0d2174f41d590"
+source = "git+https://github.com/RustPython/RustPython.git?rev=d532160333ffeb6dbeca2c2728c2391cd1e53b7f#d532160333ffeb6dbeca2c2728c2391cd1e53b7f"
 dependencies = [
 "ahash",
 "anyhow",
@@ -2496,14 +2496,27 @@ dependencies = [
 ]

 [[package]]
-name = "toml"
-version = "0.5.10"
+name = "toml_datetime"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1333c76748e868a4d9d1017b5ab53171dfd095f70c712fdb4653a406547f598f"
+checksum = "808b51e57d0ef8f71115d8f3a01e7d3750d01c79cac4b3eda910f4389fdf92fd"
 dependencies = [
 "serde",
 ]

+[[package]]
+name = "toml_edit"
+version = "0.17.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a34cc558345efd7e88b9eda9626df2138b80bb46a7606f695e751c892bc7dac6"
+dependencies = [
+ "indexmap",
+ "itertools",
+ "nom8",
+ "serde",
+ "toml_datetime",
+]
+
 [[package]]
 name = "twox-hash"
 version = "1.6.3"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ members = [

 [package]
 name = "ruff"
-version = "0.0.210"
+version = "0.0.215"
 authors = ["Charlie Marsh <charlie.r.marsh@gmail.com>"]
 edition = "2021"
 rust-version = "1.65.0"
@@ -29,7 +29,7 @@ bitflags = { version = "1.3.2" }
 cachedir = { version = "0.3.0" }
 cfg-if = { version = "1.0.0" }
 chrono = { version = "0.4.21", default-features = false, features = ["clock"] }
-clap = { version = "4.0.1", features = ["derive"] }
+clap = { version = "4.0.1", features = ["derive", "env"] }
 clap_complete_command = { version = "0.4.0" }
 colored = { version = "2.0.0" }
 dirs = { version = "4.0.0" }
@@ -51,11 +51,11 @@ path-absolutize = { version = "3.0.14", features = ["once_cell_cache", "use_unix
 quick-junit = { version = "0.3.2" }
 regex = { version = "1.6.0" }
 ropey = { version = "1.5.0", features = ["cr_lines", "simd"], default-features = false }
-ruff_macros = { version = "0.0.210", path = "ruff_macros" }
+ruff_macros = { version = "0.0.215", path = "ruff_macros" }
 rustc-hash = { version = "1.1.0" }
-rustpython-ast = { features = ["unparse"], git = "https://github.com/RustPython/RustPython.git", rev = "4d53c7cb27c0379adf8b51c4d3d0d2174f41d590" }
-rustpython-common = { git = "https://github.com/RustPython/RustPython.git", rev = "4d53c7cb27c0379adf8b51c4d3d0d2174f41d590" }
-rustpython-parser = { features = ["lalrpop"], git = "https://github.com/RustPython/RustPython.git", rev = "4d53c7cb27c0379adf8b51c4d3d0d2174f41d590" }
+rustpython-ast = { features = ["unparse"], git = "https://github.com/RustPython/RustPython.git", rev = "d532160333ffeb6dbeca2c2728c2391cd1e53b7f" }
+rustpython-common = { git = "https://github.com/RustPython/RustPython.git", rev = "d532160333ffeb6dbeca2c2728c2391cd1e53b7f" }
+rustpython-parser = { features = ["lalrpop"], git = "https://github.com/RustPython/RustPython.git", rev = "d532160333ffeb6dbeca2c2728c2391cd1e53b7f" }
 schemars = { version = "0.8.11" }
 semver = { version = "1.0.16" }
 serde = { version = "1.0.147", features = ["derive"] }
@@ -66,7 +66,7 @@ strum = { version = "0.24.1", features = ["strum_macros"] }
 strum_macros = { version = "0.24.3" }
 textwrap = { version = "0.16.0" }
 titlecase = { version = "2.2.1" }
-toml = { version = "0.5.9" }
+toml_edit = { version = "0.17.1", features = ["easy"] }
 walkdir = { version = "2.3.2" }

 [target.'cfg(not(target_family = "wasm"))'.dependencies]
--- a/647
+++ b/647
@@ -19,650 +19,3 @@ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
-
-The externally maintained libraries from which parts of the Software is derived
-are:
-
- Pyflakes, licensed as follows:
-  """
-    Copyright 2005-2011 Divmod, Inc.
-    Copyright 2013-2014 Florent Xicluna
-
-    Permission is hereby granted, free of charge, to any person obtaining
-    a copy of this software and associated documentation files (the
-    "Software"), to deal in the Software without restriction, including
-    without limitation the rights to use, copy, modify, merge, publish,
-    distribute, sublicense, and/or sell copies of the Software, and to
-    permit persons to whom the Software is furnished to do so, subject to
-    the following conditions:
-
-    The above copyright notice and this permission notice shall be
-    included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
-    LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
-    OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-    WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-  """
-
- autoflake, licensed as follows:
-  """
-    Copyright (C) 2012-2018 Steven Myint
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy of
-    this software and associated documentation files (the "Software"), to deal in
-    the Software without restriction, including without limitation the rights to
-    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
-    of the Software, and to permit persons to whom the Software is furnished to do
-    so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
-
- Flake8, licensed as follows:
-  """
-    == Flake8 License (MIT) ==
-
-    Copyright (C) 2011-2013 Tarek Ziade <tarek@ziade.org>
-    Copyright (C) 2012-2016 Ian Cordasco <graffatcolmingov@gmail.com>
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy of
-    this software and associated documentation files (the "Software"), to deal in
-    the Software without restriction, including without limitation the rights to
-    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
-    of the Software, and to permit persons to whom the Software is furnished to do
-    so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
-
- flake8-2020, licensed as follows:
-  """
-    Copyright (c) 2019 Anthony Sottile
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in
-    all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-    THE SOFTWARE.
-  """
-
- flake8-annotations, licensed as follows:
-  """
-    MIT License
-
-    Copyright (c) 2019 - Present S. Co1
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
-
- flake8-bandit, licensed as follows:
-  """
-    Copyright (c) 2017 Tyler Wince
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in
-    all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-    THE SOFTWARE.
-  """
-
- flake8-blind-except, licensed as follows:
-  """
-    The MIT License (MIT)
-
-    Copyright (c) 2014 Elijah Andrews
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy of
-    this software and associated documentation files (the "Software"), to deal in
-    the Software without restriction, including without limitation the rights to
-    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-    the Software, and to permit persons to whom the Software is furnished to do so,
-    subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-  """
-
- flake8-bugbear, licensed as follows:
-  """
-    The MIT License (MIT)
-
-    Copyright (c) 2016 Łukasz Langa
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
-
- flake8-comprehensions, licensed as follows:
-  """
-    MIT License
-
-    Copyright (c) 2017 Adam Johnson
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
-
- flake8-debugger, licensed as follows:
-  """
-    MIT License
-
-    Copyright (c) 2016 Joseph Kahn
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
-
- flake8-eradicate, licensed as follows:
-  """
-    MIT License
-
-    Copyright (c) 2018 Nikita Sobolev
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
-
- flake8-tidy-imports, licensed as follows:
-  """
-    MIT License
-
-    Copyright (c) 2017 Adam Johnson
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
-
- flake8-print, licensed as follows:
-  """
-    MIT License
-
-    Copyright (c) 2016 Joseph Kahn
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
-
- flake8-quotes, licensed as follows:
-  """
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in
-    all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-    THE SOFTWARE.
-  """
-
- flake8-return, licensed as follows:
-  """
-    MIT License
-
-    Copyright (c) 2019 Afonasev Evgeniy
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
-
- flake8-implicit-str-concat, licensed as follows:
-  """
-    The MIT License (MIT)
-
-    Copyright (c) 2019 Dylan Turner
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in
-    all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-    THE SOFTWARE.
-  """
-
- flake8-import-conventions, licensed as follows:
-  """
-    MIT License
-
-    Copyright (c) 2021 João Palmeiro
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
-
- flake8-unused-arguments, licensed as follows:
-  """
-    MIT License
-
-    Copyright (c) 2019 Nathan Hoad
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
-
- flake8-simplify, licensed as follows:
-  """
-    MIT License
-
-    Copyright (c) 2020 Martin Thoma
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
-
- isort, licensed as follows:
-  """
-    The MIT License (MIT)
-
-    Copyright (c) 2013 Timothy Edmund Crosley
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in
-    all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-    THE SOFTWARE.
-  """
-
- pep8-naming, licensed as follows:
-  """
-    Copyright © 2013 Florent Xicluna <florent.xicluna@gmail.com>
-
-    Licensed under the terms of the Expat License
-
-    Permission is hereby granted, free of charge, to any person
-    obtaining a copy of this software and associated documentation files
-    (the "Software"), to deal in the Software without restriction,
-    including without limitation the rights to use, copy, modify, merge,
-    publish, distribute, sublicense, and/or sell copies of the Software,
-    and to permit persons to whom the Software is furnished to do so,
-    subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be
-    included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
-    BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
-    ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
-
- pycodestyle, licensed as follows:
-  """
-    Copyright © 2006-2009 Johann C. Rocholl <johann@rocholl.net>
-    Copyright © 2009-2014 Florent Xicluna <florent.xicluna@gmail.com>
-    Copyright © 2014-2020 Ian Lee <IanLee1521@gmail.com>
-
-    Licensed under the terms of the Expat License
-
-    Permission is hereby granted, free of charge, to any person
-    obtaining a copy of this software and associated documentation files
-    (the "Software"), to deal in the Software without restriction,
-    including without limitation the rights to use, copy, modify, merge,
-    publish, distribute, sublicense, and/or sell copies of the Software,
-    and to permit persons to whom the Software is furnished to do so,
-    subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be
-    included in all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-    NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
-    BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
-    ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
-
- pydocstyle, licensed as follows:
-  """
-    Copyright (c) 2012 GreenSteam, <http://greensteam.dk/>
-
-    Copyright (c) 2014-2020 Amir Rachum, <http://amir.rachum.com/>
-
-    Copyright (c) 2020 Sambhav Kothari, <https://github.com/samj1912>
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy of
-    this software and associated documentation files (the "Software"), to deal in
-    the Software without restriction, including without limitation the rights to
-    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
-    of the Software, and to permit persons to whom the Software is furnished to do
-    so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
-
- pygrep-hooks, licensed as follows:
-  """
-    Copyright (c) 2018 Anthony Sottile
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in
-    all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-    THE SOFTWARE.
-  """
-
- pyupgrade, licensed as follows:
-  """
-    Copyright (c) 2017 Anthony Sottile
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in
-    all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-    THE SOFTWARE.
-  """
-
- RustPython, licensed as follows:
-  """
-    MIT License
-
-    Copyright (c) 2020 RustPython Team
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to deal
-    in the Software without restriction, including without limitation the rights
-    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-    copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in all
-    copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-    SOFTWARE.
-  """
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 # Ruff

+[![Ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/charliermarsh/ruff/main/assets/badge/v1.json)](https://github.com/charliermarsh/ruff)
 [![image](https://img.shields.io/pypi/v/ruff.svg)](https://pypi.python.org/pypi/ruff)
 [![image](https://img.shields.io/pypi/l/ruff.svg)](https://pypi.python.org/pypi/ruff)
 [![image](https://img.shields.io/pypi/pyversions/ruff.svg)](https://pypi.python.org/pypi/ruff)
@@ -56,6 +57,7 @@ Ruff is extremely actively developed and used in major open-source projects like
 - [Saleor](https://github.com/saleor/saleor)
 - [Polars](https://github.com/pola-rs/polars)
 - [Ibis](https://github.com/ibis-project/ibis)
+- [OpenBB](https://github.com/OpenBB-finance/OpenBBTerminal)
 - [`pyca/cryptography`](https://github.com/pyca/cryptography)

 Read the [launch blog post](https://notes.crmarsh.com/python-tooling-could-be-much-much-faster).
@@ -178,7 +180,7 @@ Ruff also works with [pre-commit](https://pre-commit.com):
 ```yaml
 - repo: https://github.com/charliermarsh/ruff-pre-commit
  # Ruff version.
-  rev: 'v0.0.210'
+  rev: 'v0.0.215'
  hooks:
    - id: ruff
      # Respect `exclude` and `extend-exclude` settings.
@@ -310,7 +312,7 @@ ruff path/to/code/ --select F401 --select F403
 See `ruff --help` for more:

 <!-- Begin auto-generated cli help. -->
-```shell
+```
 Ruff: An extremely fast Python linter.

 Usage: ruff [OPTIONS] [FILES]...
@@ -339,6 +341,8 @@ Options:
          Avoid writing any fixed files back; instead, output a diff for each changed file to stdout
  -n, --no-cache
          Disable cache reads
+      --isolated
+          Ignore all configuration files
      --select <SELECT>
          Comma-separated list of error codes to enable (or ALL, to enable all checks)
      --extend-select <EXTEND_SELECT>
@@ -358,11 +362,11 @@ Options:
      --per-file-ignores <PER_FILE_IGNORES>
          List of mappings from file pattern to code to exclude
      --format <FORMAT>
-          Output serialization format for error messages [possible values: text, json, junit, grouped, github, gitlab]
+          Output serialization format for error messages [env: RUFF_FORMAT=] [possible values: text, json, junit, grouped, github, gitlab]
      --stdin-filename <STDIN_FILENAME>
          The name of the file when passing it through stdin
      --cache-dir <CACHE_DIR>
-          Path to the cache directory
+          Path to the cache directory [env: RUFF_CACHE_DIR=]
      --show-source
          Show violations with source code
      --respect-gitignore
@@ -549,8 +553,8 @@ For more, see [Pyflakes](https://pypi.org/project/pyflakes/2.5.0/) on PyPI.
 | F524 | StringDotFormatMissingArguments | '...'.format(...) is missing argument(s) for placeholder(s): ... |  |
 | F525 | StringDotFormatMixingAutomatic | '...'.format(...) mixes automatic and manual numbering |  |
 | F541 | FStringMissingPlaceholders | f-string without any placeholders | 🛠 |
-| F601 | MultiValueRepeatedKeyLiteral | Dictionary key literal repeated |  |
-| F602 | MultiValueRepeatedKeyVariable | Dictionary key `...` repeated |  |
+| 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` |  |
@@ -567,7 +571,7 @@ For more, see [Pyflakes](https://pypi.org/project/pyflakes/2.5.0/) on PyPI.
 | F821 | UndefinedName | Undefined name `...` |  |
 | F822 | UndefinedExport | Undefined name `...` in `__all__` |  |
 | F823 | UndefinedLocal | Local variable `...` referenced before assignment |  |
-| F841 | UnusedVariable | Local variable `...` is assigned to but never used |  |
+| F841 | UnusedVariable | Local variable `...` is assigned to but never used | 🛠 |
 | F842 | UnusedAnnotation | Local variable `...` is annotated but never used |  |
 | F901 | RaiseNotImplemented | `raise NotImplemented` should be `raise NotImplementedError` | 🛠 |

@@ -630,7 +634,7 @@ For more, see [pydocstyle](https://pypi.org/project/pydocstyle/6.1.1/) on PyPI.
 | D202 | NoBlankLineAfterFunction | No blank lines allowed after function docstring (found 1) | 🛠 |
 | D203 | OneBlankLineBeforeClass | 1 blank line required before class docstring | 🛠 |
 | D204 | OneBlankLineAfterClass | 1 blank line required after class docstring | 🛠 |
-| D205 | BlankLineAfterSummary | 1 blank line required between summary line and description | 🛠 |
+| D205 | BlankLineAfterSummary | 1 blank line required between summary line and description (found 2) | 🛠 |
 | D206 | IndentWithSpaces | Docstring should be indented with spaces, not tabs |  |
 | D207 | NoUnderIndentation | Docstring is under-indented | 🛠 |
 | D208 | NoOverIndentation | Docstring is over-indented | 🛠 |
@@ -696,6 +700,7 @@ For more, see [pyupgrade](https://pypi.org/project/pyupgrade/3.2.0/) on PyPI.
 | UP026 | RewriteMockImport | `mock` is deprecated, use `unittest.mock` | 🛠 |
 | UP027 | RewriteListComprehension | Replace unpacked list comprehension with a generator expression | 🛠 |
 | UP028 | RewriteYieldFrom | Replace `yield` over `for` loop with `yield from` | 🛠 |
+| UP029 | UnnecessaryBuiltinImport | Unnecessary builtin import: `...` | 🛠 |

 ### pep8-naming (N)

@@ -762,10 +767,16 @@ For more, see [flake8-bandit](https://pypi.org/project/flake8-bandit/4.1.1/) on
 | ---- | ---- | ------- | --- |
 | S101 | AssertUsed | Use of `assert` detected |  |
 | S102 | ExecUsed | Use of `exec` detected |  |
+| S103 | BadFilePermissions | `os.chmod` setting a permissive mask `0o777` on file or directory |  |
 | S104 | HardcodedBindAllInterfaces | Possible binding to all interfaces |  |
-| S105 | HardcodedPasswordString | Possible hardcoded password: `"..."` |  |
-| S106 | HardcodedPasswordFuncArg | Possible hardcoded password: `"..."` |  |
-| S107 | HardcodedPasswordDefault | Possible hardcoded password: `"..."` |  |
+| S105 | HardcodedPasswordString | Possible hardcoded password: "..." |  |
+| S106 | HardcodedPasswordFuncArg | Possible hardcoded password: "..." |  |
+| S107 | HardcodedPasswordDefault | Possible hardcoded password: "..." |  |
+| S108 | HardcodedTempFile | Probable insecure usage of temporary file or directory: "..." |  |
+| S113 | RequestWithoutTimeout | Probable use of requests call without timeout |  |
+| S324 | HashlibInsecureHashFunction | Probable use of insecure hash functions in `hashlib`: "..." |  |
+| S501 | RequestWithNoCertValidation | Probable use of `...` call with `verify=False` disabling SSL certificate checks |  |
+| S506 | UnsafeYAMLLoad | Probable use of unsafe `yaml.load`. Allows instantiation of arbitrary objects. Consider `yaml.safe_load`. |  |

 ### flake8-blind-except (BLE)

@@ -909,20 +920,20 @@ For more, see [flake8-pytest-style](https://pypi.org/project/flake8-pytest-style
 | PT005 | IncorrectFixtureNameUnderscore | Fixture `...` returns a value, remove leading underscore |  |
 | PT006 | ParametrizeNamesWrongType | Wrong name(s) type in `@pytest.mark.parametrize`, expected `tuple` | 🛠 |
 | PT007 | ParametrizeValuesWrongType | Wrong values type in `@pytest.mark.parametrize` expected `list` of `tuple` |  |
-| PT008 | PatchWithLambda | Use `return_value=` instead of patching with lambda |  |
-| PT009 | UnittestAssertion | Use a regular assert instead of unittest-style '...' |  |
+| PT008 | PatchWithLambda | Use `return_value=` instead of patching with `lambda` |  |
+| PT009 | UnittestAssertion | Use a regular `assert` instead of unittest-style `...` | 🛠 |
 | PT010 | RaisesWithoutException | set the expected exception in `pytest.raises()` |  |
 | PT011 | RaisesTooBroad | `pytest.raises(...)` is too broad, set the `match` parameter or use a more specific exception |  |
 | PT012 | RaisesWithMultipleStatements | `pytest.raises()` block should contain a single simple statement |  |
 | PT013 | IncorrectPytestImport | Found incorrect import of pytest, use simple `import pytest` instead |  |
 | PT015 | AssertAlwaysFalse | Assertion always fails, replace with `pytest.fail()` |  |
 | PT016 | FailWithoutMessage | No message passed to `pytest.fail()` |  |
-| PT017 | AssertInExcept | Found assertion on exception ... in except block, use pytest.raises() instead |  |
+| PT017 | AssertInExcept | Found assertion on exception `...` in except block, use `pytest.raises()` instead |  |
 | PT018 | CompositeAssertion | Assertion should be broken down into multiple parts |  |
-| PT019 | FixtureParamWithoutValue | Fixture ... without value is injected as parameter, use @pytest.mark.usefixtures instead |  |
+| PT019 | FixtureParamWithoutValue | Fixture `...` without value is injected as parameter, use `@pytest.mark.usefixtures` instead |  |
 | PT020 | DeprecatedYieldFixture | `@pytest.yield_fixture` is deprecated, use `@pytest.fixture` |  |
 | PT021 | FixtureFinalizerCallback | Use `yield` instead of `request.addfinalizer` |  |
-| PT022 | UselessYieldFixture | No teardown in fixture ..., use `return` instead of `yield` | 🛠 |
+| PT022 | UselessYieldFixture | No teardown in fixture `...`, use `return` instead of `yield` | 🛠 |
 | PT023 | IncorrectMarkParenthesesStyle | Use `@pytest.mark....` over `@pytest.mark....()` | 🛠 |
 | PT024 | UnnecessaryAsyncioMarkOnFixture | `pytest.mark.asyncio` is unnecessary for fixtures |  |
 | PT025 | ErroneousUseFixturesOnFixture | `pytest.mark.usefixtures` has no effect on fixtures |  |
@@ -960,10 +971,28 @@ For more, see [flake8-simplify](https://pypi.org/project/flake8-simplify/0.19.3/

 | Code | Name | Message | Fix |
 | ---- | ---- | ------- | --- |
+| SIM101 | DuplicateIsinstanceCall | Multiple `isinstance` calls for `...`, merge into a single call | 🛠 |
+| SIM102 | NestedIfStatements | Use a single `if` statement instead of nested `if` statements |  |
+| SIM103 | ReturnBoolConditionDirectly | Return the condition `...` directly | 🛠 |
+| SIM105 | UseContextlibSuppress | Use `contextlib.suppress(...)` instead of try-except-pass |  |
+| SIM107 | ReturnInTryExceptFinally | Don't use `return` in `try`/`except` and `finally` |  |
+| SIM108 | UseTernaryOperator | Use ternary operator `...` instead of if-else-block | 🛠 |
+| SIM109 | CompareWithTuple | Use `value in (..., ...)` instead of `value == ... or value == ...` | 🛠 |
+| SIM110 | ConvertLoopToAny | Use `return any(x for x in y)` instead of `for` loop | 🛠 |
+| SIM111 | ConvertLoopToAll | Use `return all(x for x in y)` instead of `for` loop | 🛠 |
+| SIM117 | MultipleWithStatements | Use a single `with` statement with multiple contexts instead of nested `with` statements |  |
 | SIM118 | KeyInDict | Use `key in dict` instead of `key in dict.keys()` | 🛠 |
+| SIM201 | NegateEqualOp | Use `left != right` instead of `not left == right` | 🛠 |
+| SIM202 | NegateNotEqualOp | Use `left == right` instead of `not left != right` | 🛠 |
+| SIM208 | DoubleNegation | Use `expr` instead of `not (not expr)` | 🛠 |
+| SIM210 | IfExprWithTrueFalse | Use `bool(expr)` instead of `True if expr else False` | 🛠 |
+| SIM211 | IfExprWithFalseTrue | Use `not expr` instead of `False if expr else True` | 🛠 |
+| SIM212 | IfExprWithTwistedArms | Use `b if b else a` instead of `a if not b else b` | 🛠 |
+| SIM220 | AAndNotA | Use `False` instead of `... and not ...` | 🛠 |
+| SIM221 | AOrNotA | Use `True` instead of `... or not ...` | 🛠 |
 | SIM222 | OrTrue | Use `True` instead of `... or True` | 🛠 |
 | SIM223 | AndFalse | Use `False` instead of `... and False` | 🛠 |
-| SIM300 | YodaConditions | Use `left == right` instead of `right == left (Yoda-conditions)` | 🛠 |
+| SIM300 | YodaConditions | Yoda conditions are discouraged, use `left == right` instead | 🛠 |

 ### flake8-tidy-imports (TID)

@@ -1304,8 +1333,9 @@ jobs:
        run: |
          python -m pip install --upgrade pip
          pip install ruff
+      # Include `--format=github` to enable automatic inline annotations.
      - name: Run Ruff
-        run: ruff .
+        run: ruff --format=github .
 ```

 ## FAQ
@@ -1331,11 +1361,11 @@ Under those conditions, Ruff implements every rule in Flake8.
 Ruff also re-implements some of the most popular Flake8 plugins and related code quality tools
 natively, including:

- [`autoflake`](https://pypi.org/project/autoflake/) (1/7)
+- [`autoflake`](https://pypi.org/project/autoflake/) ([#1647](https://github.com/charliermarsh/ruff/issues/1647))
 - [`eradicate`](https://pypi.org/project/eradicate/)
 - [`flake8-2020`](https://pypi.org/project/flake8-2020/)
 - [`flake8-annotations`](https://pypi.org/project/flake8-annotations/)
- [`flake8-bandit`](https://pypi.org/project/flake8-bandit/) (6/40)
+- [`flake8-bandit`](https://pypi.org/project/flake8-bandit/) ([#1646](https://github.com/charliermarsh/ruff/issues/1646))
 - [`flake8-blind-except`](https://pypi.org/project/flake8-blind-except/)
 - [`flake8-boolean-trap`](https://pypi.org/project/flake8-boolean-trap/)
 - [`flake8-bugbear`](https://pypi.org/project/flake8-bugbear/)
@@ -1348,19 +1378,19 @@ natively, including:
 - [`flake8-errmsg`](https://pypi.org/project/flake8-errmsg/)
 - [`flake8-implicit-str-concat`](https://pypi.org/project/flake8-implicit-str-concat/)
 - [`flake8-import-conventions`](https://github.com/joaopalmeiro/flake8-import-conventions)
- [`flake8-pie`](https://pypi.org/project/flake8-pie/) (3/7)
+- [`flake8-pie`](https://pypi.org/project/flake8-pie/) ([#1543](https://github.com/charliermarsh/ruff/issues/1543))
 - [`flake8-print`](https://pypi.org/project/flake8-print/)
 - [`flake8-quotes`](https://pypi.org/project/flake8-quotes/)
 - [`flake8-return`](https://pypi.org/project/flake8-return/)
- [`flake8-simplify`](https://pypi.org/project/flake8-simplify/) (4/37)
+- [`flake8-simplify`](https://pypi.org/project/flake8-simplify/) ([#998](https://github.com/charliermarsh/ruff/issues/998))
 - [`flake8-super`](https://pypi.org/project/flake8-super/)
- [`flake8-tidy-imports`](https://pypi.org/project/flake8-tidy-imports/) (1/3)
+- [`flake8-tidy-imports`](https://pypi.org/project/flake8-tidy-imports/)
 - [`isort`](https://pypi.org/project/isort/)
 - [`mccabe`](https://pypi.org/project/mccabe/)
 - [`pep8-naming`](https://pypi.org/project/pep8-naming/)
 - [`pydocstyle`](https://pypi.org/project/pydocstyle/)
- [`pygrep-hooks`](https://github.com/pre-commit/pygrep-hooks) (3/10)
- [`pyupgrade`](https://pypi.org/project/pyupgrade/) (21/33)
+- [`pygrep-hooks`](https://github.com/pre-commit/pygrep-hooks) ([#980](https://github.com/charliermarsh/ruff/issues/980))
+- [`pyupgrade`](https://pypi.org/project/pyupgrade/) ([#827](https://github.com/charliermarsh/ruff/issues/827))
 - [`yesqa`](https://github.com/asottile/yesqa)

 Note that, in some cases, Ruff uses different error code prefixes than would be found in the
@@ -1375,6 +1405,13 @@ Beyond the rule set, Ruff suffers from the following limitations vis-à-vis Flak
 2. Flake8 has a plugin architecture and supports writing custom lint rules. (Instead, popular Flake8
   plugins are re-implemented in Rust as part of Ruff itself.)

+There are a few other minor incompatibilities between Ruff and the originating Flake8 plugins:
+
+- Ruff doesn't implement the "opinionated" lint rules from `flake8-bugbear`.
+- Depending on your project structure, Ruff and `isort` can differ in their detection of first-party
+  code. (This is often solved by modifying the `src` property, e.g., to `src = ["src"]`, if your
+  code is nested in a `src` directory.)
+
 ### How does Ruff compare to Pylint?

 At time of writing, Pylint implements 409 total rules, while Ruff implements 224, of which
@@ -1393,7 +1430,7 @@ Today, Ruff can be used to replace Flake8 when used with any of the following pl

 - [`flake8-2020`](https://pypi.org/project/flake8-2020/)
 - [`flake8-annotations`](https://pypi.org/project/flake8-annotations/)
- [`flake8-bandit`](https://pypi.org/project/flake8-bandit/) (6/40)
+- [`flake8-bandit`](https://pypi.org/project/flake8-bandit/) ([#1646](https://github.com/charliermarsh/ruff/issues/1646))
 - [`flake8-blind-except`](https://pypi.org/project/flake8-blind-except/)
 - [`flake8-boolean-trap`](https://pypi.org/project/flake8-boolean-trap/)
 - [`flake8-bugbear`](https://pypi.org/project/flake8-bugbear/)
@@ -1406,21 +1443,21 @@ Today, Ruff can be used to replace Flake8 when used with any of the following pl
 - [`flake8-errmsg`](https://pypi.org/project/flake8-errmsg/)
 - [`flake8-implicit-str-concat`](https://pypi.org/project/flake8-implicit-str-concat/)
 - [`flake8-import-conventions`](https://github.com/joaopalmeiro/flake8-import-conventions)
- [`flake8-pie`](https://pypi.org/project/flake8-pie/) (3/7)
+- [`flake8-pie`](https://pypi.org/project/flake8-pie/) ([#1543](https://github.com/charliermarsh/ruff/issues/1543))
 - [`flake8-print`](https://pypi.org/project/flake8-print/)
 - [`flake8-quotes`](https://pypi.org/project/flake8-quotes/)
 - [`flake8-return`](https://pypi.org/project/flake8-return/)
- [`flake8-simplify`](https://pypi.org/project/flake8-simplify/) (4/37)
+- [`flake8-simplify`](https://pypi.org/project/flake8-simplify/) ([#998](https://github.com/charliermarsh/ruff/issues/998))
 - [`flake8-super`](https://pypi.org/project/flake8-super/)
- [`flake8-tidy-imports`](https://pypi.org/project/flake8-tidy-imports/) (1/3)
+- [`flake8-tidy-imports`](https://pypi.org/project/flake8-tidy-imports/)
 - [`mccabe`](https://pypi.org/project/mccabe/)
 - [`pep8-naming`](https://pypi.org/project/pep8-naming/)
 - [`pydocstyle`](https://pypi.org/project/pydocstyle/)

 Ruff can also replace [`isort`](https://pypi.org/project/isort/),
 [`yesqa`](https://github.com/asottile/yesqa), [`eradicate`](https://pypi.org/project/eradicate/),
-[`pygrep-hooks`](https://github.com/pre-commit/pygrep-hooks) (3/10), and a subset of the rules
-implemented in [`pyupgrade`](https://pypi.org/project/pyupgrade/) (21/33).
+[`pygrep-hooks`](https://github.com/pre-commit/pygrep-hooks) ([#980](https://github.com/charliermarsh/ruff/issues/980)), and a subset of the rules
+implemented in [`pyupgrade`](https://pypi.org/project/pyupgrade/) ([#827](https://github.com/charliermarsh/ruff/issues/827)).

 If you're looking to use Ruff, but rely on an unsupported Flake8 plugin, feel free to file an Issue.

@@ -2212,6 +2249,27 @@ target-version = "py37"

 ---

+#### [`task-tags`](#task-tags)
+
+A list of task tags to recognize (e.g., "TODO", "FIXME", "XXX").
+
+Comments starting with these tags will be ignored by commented-out code
+detection (`ERA`), and skipped by line-length checks (`E501`) if
+`ignore-overlong-task-comments` is set to `true`.
+
+**Default value**: `["TODO", "FIXME", "XXX"]`
+
+**Type**: `Vec<String>`
+
+**Example usage**:
+
+```toml
+[tool.ruff]
+task-tags = ["HACK"]
+```
+
+---
+
 #### [`unfixable`](#unfixable)

 A list of check code prefixes to consider un-autofix-able.
@@ -2326,6 +2384,43 @@ suppress-none-returning = true

 ---

+### `flake8-bandit`
+
+#### [`hardcoded-tmp-directory`](#hardcoded-tmp-directory)
+
+A list of directories to consider temporary.
+
+**Default value**: `["/tmp", "/var/tmp", "/dev/shm"]`
+
+**Type**: `Vec<String>`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-bandit]
+hardcoded-tmp-directory = ["/foo/bar"]
+```
+
+---
+
+#### [`hardcoded-tmp-directory-extend`](#hardcoded-tmp-directory-extend)
+
+A list of directories to consider temporary, in addition to those
+specified by `hardcoded-tmp-directory`.
+
+**Default value**: `[]`
+
+**Type**: `Vec<String>`
+
+**Example usage**:
+
+```toml
+[tool.ruff.flake8-bandit]
+extend-hardcoded-tmp-directory = ["/foo/bar"]
+```
+
+---
+
 ### `flake8-bugbear`

 #### [`extend-immutable-calls`](#extend-immutable-calls)
@@ -2381,9 +2476,10 @@ the `extend_aliases` option.

 ```toml
 [tool.ruff.flake8-import-conventions]
+[tool.ruff.flake8-import-conventions.aliases]
 # Declare the default aliases.
 altair = "alt"
-matplotlib.pyplot = "plt"
+"matplotlib.pyplot" = "plt"
 numpy = "np"
 pandas = "pd"
 seaborn = "sns"
@@ -2404,6 +2500,7 @@ will be added to the `aliases` mapping.

 ```toml
 [tool.ruff.flake8-import-conventions]
+[tool.ruff.flake8-import-conventions.extend-aliases]
 # Declare a custom alias for the `matplotlib` module.
 "dask.dataframe" = "dd"
 ```
@@ -2958,6 +3055,27 @@ staticmethod-decorators = ["staticmethod", "stcmthd"]

 ---

+### `pycodestyle`
+
+#### [`ignore-overlong-task-comments`](#ignore-overlong-task-comments)
+
+Whether or not line-length checks (`E501`) should be triggered for
+comments starting with `task-tags` (by default: ["TODO", "FIXME",
+and "XXX"]).
+
+**Default value**: `false`
+
+**Type**: `bool`
+
+**Example usage**:
+
+```toml
+[tool.ruff.pycodestyle]
+ignore-overlong-task-comments = true
+```
+
+---
+
 ### `pydocstyle`

 #### [`convention`](#convention)
@@ -3012,4 +3130,4 @@ MIT
 ## Contributing

 Contributions are welcome and hugely appreciated. To get started, check out the
-[contributing guidelines](https://github.com/charliermarsh/ruff/blob/main/CONTRIBUTING.md).
+[contributing guidelines](https://github.com/charliermarsh/ruff/blob/main/.github/CONTRIBUTING.md).
--- a/assets/badge/v0.json
+++ b/assets/badge/v0.json
@@ -0,0 +1,8 @@
+{
+  "label": "",
+  "message": "Ruff",
+  "logoSvg": "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"128\" height=\"128\"><path d=\"M115.36 61.84 70.22 50.49 114.45 2.4a1.222 1.222 0 0 0-1.54-1.87L12.3 61.98c-.41.25-.64.72-.57 1.2.06.48.4.87.87 1.01l45.07 13.25-44.29 48.16c-.42.46-.44 1.15-.04 1.61.24.29.58.44.94.44.22 0 .45-.06.65-.19l100.78-63.41c.42-.26.64-.75.56-1.22-.08-.49-.43-.88-.91-.99z\" style=\"fill:#fcc21b\"/></svg>",
+  "logoWidth": 10,
+  "labelColor": "grey",
+  "color": "#E15759"
+}
--- a/assets/badge/v1.json
+++ b/assets/badge/v1.json
@@ -0,0 +1,8 @@
+{
+  "label": "",
+  "message": "Ruff",
+  "logoSvg": "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"109\" height=\"132\" fill=\"none\"><g filter=\"url(#a)\"><path fill=\"#FCC21B\" d=\"m103.642 61.492-45.14-11.35 44.23-48.09a1.222 1.222 0 0 0-1.54-1.87L.582 61.632c-.41.25-.64.72-.57 1.2.06.48.4.87.87 1.01l45.07 13.25-44.29 48.16c-.42.46-.44 1.15-.04 1.61.24.29.58.44.94.44.22 0 .45-.06.65-.19l100.78-63.41c.42-.26.64-.75.56-1.22-.08-.49-.43-.88-.91-.99Z\"/></g><defs><filter id=\"a\" width=\"108.569\" height=\"131.302\" x=\"0\" y=\"0\" color-interpolation-filters=\"sRGB\" filterUnits=\"userSpaceOnUse\"><feFlood flood-opacity=\"0\" result=\"BackgroundImageFix\"/><feColorMatrix in=\"SourceAlpha\" result=\"hardAlpha\" values=\"0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 127 0\"/><feOffset dx=\"4\" dy=\"4\"/><feComposite in2=\"hardAlpha\" operator=\"out\"/><feColorMatrix values=\"0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0\"/><feBlend in2=\"BackgroundImageFix\" result=\"effect1_dropShadow_7_4\"/><feBlend in=\"SourceGraphic\" in2=\"effect1_dropShadow_7_4\" result=\"shape\"/></filter></defs></svg>",
+  "logoWidth": 10,
+  "labelColor": "grey",
+  "color": "#E15759"
+}
--- a/flake8_to_ruff/Cargo.lock
+++ b/flake8_to_ruff/Cargo.lock
@@ -771,7 +771,7 @@ checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"

 [[package]]
 name = "flake8_to_ruff"
-version = "0.0.210"
+version = "0.0.215"
 dependencies = [
 "anyhow",
 "clap",
@@ -1975,7 +1975,7 @@ dependencies = [

 [[package]]
 name = "ruff"
-version = "0.0.210"
+version = "0.0.215"
 dependencies = [
 "anyhow",
 "bincode",
--- a/flake8_to_ruff/Cargo.toml
+++ b/flake8_to_ruff/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "flake8-to-ruff"
-version = "0.0.210-dev.0"
+version = "0.0.215-dev.0"
 edition = "2021"

 [lib]
@@ -18,7 +18,7 @@ serde = { version = "1.0.147", features = ["derive"] }
 serde_json = { version = "1.0.87" }
 strum = { version = "0.24.1", features = ["strum_macros"] }
 strum_macros = { version = "0.24.3" }
-toml = { version = "0.5.9" }
+toml_edit = { version = "0.17.1", features = ["easy"] }

 [dev-dependencies]

--- a/flake8_to_ruff/src/black.rs
+++ b/flake8_to_ruff/src/black.rs
@@ -26,7 +26,7 @@ struct Pyproject {

 pub fn parse_black_options<P: AsRef<Path>>(path: P) -> Result<Option<Black>> {
    let contents = std::fs::read_to_string(path)?;
-    Ok(toml::from_str::<Pyproject>(&contents)?
+    Ok(toml_edit::easy::from_str::<Pyproject>(&contents)?
        .tool
        .and_then(|tool| tool.black))
 }
--- a/flake8_to_ruff/src/converter.rs
+++ b/flake8_to_ruff/src/converter.rs
@@ -7,7 +7,7 @@ use ruff::flake8_pytest_style::types::{
 use ruff::flake8_quotes::settings::Quote;
 use ruff::flake8_tidy_imports::settings::Strictness;
 use ruff::pydocstyle::settings::Convention;
-use ruff::registry_gen::CheckCodePrefix;
+use ruff::registry::CheckCodePrefix;
 use ruff::settings::options::Options;
 use ruff::settings::pyproject::Pyproject;
 use ruff::{
@@ -345,7 +345,7 @@ mod tests {

    use anyhow::Result;
    use ruff::pydocstyle::settings::Convention;
-    use ruff::registry_gen::CheckCodePrefix;
+    use ruff::registry::CheckCodePrefix;
    use ruff::settings::options::Options;
    use ruff::settings::pyproject::Pyproject;
    use ruff::{flake8_quotes, pydocstyle};
@@ -390,8 +390,10 @@ mod tests {
            src: None,
            target_version: None,
            unfixable: None,
+            task_tags: None,
            update_check: None,
            flake8_annotations: None,
+            flake8_bandit: None,
            flake8_bugbear: None,
            flake8_errmsg: None,
            flake8_pytest_style: None,
@@ -402,6 +404,7 @@ mod tests {
            isort: None,
            mccabe: None,
            pep8_naming: None,
+            pycodestyle: None,
            pydocstyle: None,
            pyupgrade: None,
        });
@@ -450,8 +453,10 @@ mod tests {
            src: None,
            target_version: None,
            unfixable: None,
+            task_tags: None,
            update_check: None,
            flake8_annotations: None,
+            flake8_bandit: None,
            flake8_bugbear: None,
            flake8_errmsg: None,
            flake8_pytest_style: None,
@@ -462,6 +467,7 @@ mod tests {
            isort: None,
            mccabe: None,
            pep8_naming: None,
+            pycodestyle: None,
            pydocstyle: None,
            pyupgrade: None,
        });
@@ -510,8 +516,10 @@ mod tests {
            src: None,
            target_version: None,
            unfixable: None,
+            task_tags: None,
            update_check: None,
            flake8_annotations: None,
+            flake8_bandit: None,
            flake8_bugbear: None,
            flake8_errmsg: None,
            flake8_pytest_style: None,
@@ -522,6 +530,7 @@ mod tests {
            isort: None,
            mccabe: None,
            pep8_naming: None,
+            pycodestyle: None,
            pydocstyle: None,
            pyupgrade: None,
        });
@@ -570,8 +579,10 @@ mod tests {
            src: None,
            target_version: None,
            unfixable: None,
+            task_tags: None,
            update_check: None,
            flake8_annotations: None,
+            flake8_bandit: None,
            flake8_bugbear: None,
            flake8_errmsg: None,
            flake8_pytest_style: None,
@@ -582,6 +593,7 @@ mod tests {
            isort: None,
            mccabe: None,
            pep8_naming: None,
+            pycodestyle: None,
            pydocstyle: None,
            pyupgrade: None,
        });
@@ -630,8 +642,10 @@ mod tests {
            src: None,
            target_version: None,
            unfixable: None,
+            task_tags: None,
            update_check: None,
            flake8_annotations: None,
+            flake8_bandit: None,
            flake8_bugbear: None,
            flake8_errmsg: None,
            flake8_pytest_style: None,
@@ -647,6 +661,7 @@ mod tests {
            isort: None,
            mccabe: None,
            pep8_naming: None,
+            pycodestyle: None,
            pydocstyle: None,
            pyupgrade: None,
        });
@@ -699,8 +714,10 @@ mod tests {
            src: None,
            target_version: None,
            unfixable: None,
+            task_tags: None,
            update_check: None,
            flake8_annotations: None,
+            flake8_bandit: None,
            flake8_bugbear: None,
            flake8_errmsg: None,
            flake8_pytest_style: None,
@@ -711,6 +728,7 @@ mod tests {
            isort: None,
            mccabe: None,
            pep8_naming: None,
+            pycodestyle: None,
            pydocstyle: Some(pydocstyle::settings::Options {
                convention: Some(Convention::Numpy),
            }),
@@ -762,8 +780,10 @@ mod tests {
            src: None,
            target_version: None,
            unfixable: None,
+            task_tags: None,
            update_check: None,
            flake8_annotations: None,
+            flake8_bandit: None,
            flake8_bugbear: None,
            flake8_errmsg: None,
            flake8_pytest_style: None,
@@ -779,6 +799,7 @@ mod tests {
            isort: None,
            mccabe: None,
            pep8_naming: None,
+            pycodestyle: None,
            pydocstyle: None,
            pyupgrade: None,
        });
--- a/flake8_to_ruff/src/lib.rs
+++ b/flake8_to_ruff/src/lib.rs
@@ -10,6 +10,7 @@
    clippy::similar_names,
    clippy::too_many_lines
 )]
+#![forbid(unsafe_code)]

 pub mod black;
 pub mod converter;
--- a/flake8_to_ruff/src/main.rs
+++ b/flake8_to_ruff/src/main.rs
@@ -11,6 +11,7 @@
    clippy::similar_names,
    clippy::too_many_lines
 )]
+#![forbid(unsafe_code)]

 use std::path::PathBuf;

@@ -57,7 +58,7 @@ fn main() -> Result<()> {

    // Create Ruff's pyproject.toml section.
    let pyproject = converter::convert(&config, black.as_ref(), cli.plugin)?;
-    println!("{}", toml::to_string_pretty(&pyproject)?);
+    println!("{}", toml_edit::easy::to_string_pretty(&pyproject)?);

    Ok(())
 }
--- a/flake8_to_ruff/src/parser.rs
+++ b/flake8_to_ruff/src/parser.rs
@@ -3,8 +3,7 @@ use std::str::FromStr;
 use anyhow::{bail, Result};
 use once_cell::sync::Lazy;
 use regex::Regex;
-use ruff::registry::PREFIX_REDIRECTS;
-use ruff::registry_gen::CheckCodePrefix;
+use ruff::registry::{CheckCodePrefix, PREFIX_REDIRECTS};
 use ruff::settings::types::PatternPrefixPair;
 use rustc_hash::FxHashMap;

@@ -128,7 +127,7 @@ fn tokenize_files_to_codes_mapping(value: &str) -> Vec<Token> {
                if mat.start() == 0 {
                    tokens.push(Token {
                        token_name,
-                        src: mat.as_str().to_string().trim().to_string(),
+                        src: mat.as_str().trim().to_string(),
                    });
                    i += mat.end();
                    break;
@@ -201,7 +200,7 @@ pub fn collect_per_file_ignores(
 #[cfg(test)]
 mod tests {
    use anyhow::Result;
-    use ruff::registry_gen::CheckCodePrefix;
+    use ruff::registry::CheckCodePrefix;
    use ruff::settings::types::PatternPrefixPair;

    use crate::parser::{parse_files_to_codes_mapping, parse_prefix_codes, parse_strings};
--- a/flake8_to_ruff/src/plugin.rs
+++ b/flake8_to_ruff/src/plugin.rs
@@ -3,7 +3,7 @@ use std::fmt;
 use std::str::FromStr;

 use anyhow::anyhow;
-use ruff::registry_gen::CheckCodePrefix;
+use ruff::registry::CheckCodePrefix;

 #[derive(Clone, Ord, PartialOrd, Eq, PartialEq)]
 pub enum Plugin {
--- a/licenses/LICENSE_JBKahn_flake8-debugger
+++ b/licenses/LICENSE_JBKahn_flake8-debugger
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2016 Joseph Kahn
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_MartinThoma_flake8-simplify
+++ b/licenses/LICENSE_MartinThoma_flake8-simplify
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2020 Martin Thoma
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_PyCQA_autoflake
+++ b/licenses/LICENSE_PyCQA_autoflake
@@ -0,0 +1,19 @@
+Copyright (C) 2012-2018 Steven Myint
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_PyCQA_flake8
+++ b/licenses/LICENSE_PyCQA_flake8
@@ -0,0 +1,22 @@
+== Flake8 License (MIT) ==
+
+Copyright (C) 2011-2013 Tarek Ziade <tarek@ziade.org>
+Copyright (C) 2012-2016 Ian Cordasco <graffatcolmingov@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_PyCQA_flake8-bugbear
+++ b/licenses/LICENSE_PyCQA_flake8-bugbear
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2016 Łukasz Langa
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_PyCQA_isort
+++ b/licenses/LICENSE_PyCQA_isort
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 Timothy Edmund Crosley
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
--- a/licenses/LICENSE_PyCQA_pep8-naming
+++ b/licenses/LICENSE_PyCQA_pep8-naming
@@ -0,0 +1,23 @@
+Copyright © 2013 Florent Xicluna <florent.xicluna@gmail.com>
+
+Licensed under the terms of the Expat License
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation files
+(the "Software"), to deal in the Software without restriction,
+including without limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of the Software,
+and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_PyCQA_pycodestyle
+++ b/licenses/LICENSE_PyCQA_pycodestyle
@@ -0,0 +1,25 @@
+Copyright © 2006-2009 Johann C. Rocholl <johann@rocholl.net>
+Copyright © 2009-2014 Florent Xicluna <florent.xicluna@gmail.com>
+Copyright © 2014-2020 Ian Lee <IanLee1521@gmail.com>
+
+Licensed under the terms of the Expat License
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation files
+(the "Software"), to deal in the Software without restriction,
+including without limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of the Software,
+and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_PyCQA_pydocstyle
+++ b/licenses/LICENSE_PyCQA_pydocstyle
@@ -0,0 +1,23 @@
+Copyright (c) 2012 GreenSteam, <http://greensteam.dk/>
+
+Copyright (c) 2014-2020 Amir Rachum, <http://amir.rachum.com/>
+
+Copyright (c) 2020 Sambhav Kothari, <https://github.com/samj1912>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_PyCQA_pyflakes
+++ b/licenses/LICENSE_PyCQA_pyflakes
@@ -0,0 +1,21 @@
+Copyright 2005-2011 Divmod, Inc.
+Copyright 2013-2014 Florent Xicluna
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
--- a/licenses/LICENSE_RustPython_RustPython
+++ b/licenses/LICENSE_RustPython_RustPython
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2020 RustPython Team
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_adamchainz_flake8-comprehensions
+++ b/licenses/LICENSE_adamchainz_flake8-comprehensions
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2017 Adam Johnson
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_adamchainz_flake8-tidy-imports
+++ b/licenses/LICENSE_adamchainz_flake8-tidy-imports
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2017 Adam Johnson
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_afonasev_flake8-return
+++ b/licenses/LICENSE_afonasev_flake8-return
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2019 Afonasev Evgeniy
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_asottile_flake8-2020
+++ b/licenses/LICENSE_asottile_flake8-2020
@@ -0,0 +1,19 @@
+Copyright (c) 2019 Anthony Sottile
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
--- a/licenses/LICENSE_asottile_pyupgrade
+++ b/licenses/LICENSE_asottile_pyupgrade
@@ -0,0 +1,19 @@
+Copyright (c) 2017 Anthony Sottile
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
--- a/licenses/LICENSE_elijahandrews_flake8-blind-except
+++ b/licenses/LICENSE_elijahandrews_flake8-blind-except
@@ -0,0 +1,20 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Elijah Andrews
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
--- a/licenses/LICENSE_flake8-implicit-str-concat_flake8-implicit-str-concat
+++ b/licenses/LICENSE_flake8-implicit-str-concat_flake8-implicit-str-concat
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2019 Dylan Turner
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
--- a/licenses/LICENSE_jbkahn_flake8-print
+++ b/licenses/LICENSE_jbkahn_flake8-print
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2016 Joseph Kahn
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_joaopalmeiro_flake8-import-conventions
+++ b/licenses/LICENSE_joaopalmeiro_flake8-import-conventions
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 João Palmeiro
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_nhoad_flake8-unused-arguments
+++ b/licenses/LICENSE_nhoad_flake8-unused-arguments
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2019 Nathan Hoad
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_pre-commit_pygrep-hooks
+++ b/licenses/LICENSE_pre-commit_pygrep-hooks
@@ -0,0 +1,19 @@
+Copyright (c) 2018 Anthony Sottile
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
--- a/licenses/LICENSE_sco1_flake8-annotations
+++ b/licenses/LICENSE_sco1_flake8-annotations
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2019 - Present S. Co1
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_tylerwince_flake8-bandit
+++ b/licenses/LICENSE_tylerwince_flake8-bandit
@@ -0,0 +1,19 @@
+Copyright (c) 2017 Tyler Wince
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
--- a/licenses/LICENSE_wemake-services_flake8-eradicate
+++ b/licenses/LICENSE_wemake-services_flake8-eradicate
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2018 Nikita Sobolev
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
--- a/licenses/LICENSE_zheller_flake8-quotes
+++ b/licenses/LICENSE_zheller_flake8-quotes
@@ -0,0 +1,17 @@
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "maturin"

 [project]
 name = "ruff"
-version = "0.0.210"
+version = "0.0.215"
 description = "An extremely fast Python linter, written in Rust."
 authors = [
  { name = "Charlie Marsh", email = "charlie.r.marsh@gmail.com" },
@@ -31,8 +31,14 @@ classifiers = [
    "Topic :: Software Development :: Libraries :: Python Modules",
    "Topic :: Software Development :: Quality Assurance",
 ]
-urls = { repository = "https://github.com/charliermarsh/ruff-lsp" }
+urls = { repository = "https://github.com/charliermarsh/ruff" }

 [tool.maturin]
 bindings = "bin"
 strip = true
+
+[tool.setuptools]
+license-files = [
+  "LICENSE",
+  "licenses/*",
+]
--- a/resources/test/fixtures/flake8_bandit/S103.py
+++ b/resources/test/fixtures/flake8_bandit/S103.py
@@ -0,0 +1,22 @@
+import os
+import stat
+
+keyfile = "foo"
+
+os.chmod("/etc/passwd", 0o227)  # Error
+os.chmod("/etc/passwd", 0o7)  # Error
+os.chmod("/etc/passwd", 0o664)  # OK
+os.chmod("/etc/passwd", 0o777)  # Error
+os.chmod("/etc/passwd", 0o770)  # Error
+os.chmod("/etc/passwd", 0o776)  # Error
+os.chmod("/etc/passwd", 0o760)  # OK
+os.chmod("~/.bashrc", 511)  # Error
+os.chmod("/etc/hosts", 0o777)  # Error
+os.chmod("/tmp/oh_hai", 0x1FF)  # Error
+os.chmod("/etc/passwd", stat.S_IRWXU)  # OK
+os.chmod(keyfile, 0o777)  # Error
+os.chmod(keyfile, 0o7 | 0o70 | 0o700)  # Error
+os.chmod(keyfile, stat.S_IRWXO | stat.S_IRWXG | stat.S_IRWXU)  # Error
+os.chmod("~/hidden_exec", stat.S_IXGRP)  # Error
+os.chmod("~/hidden_exec", stat.S_IXOTH)  # OK
+os.chmod("/etc/passwd", stat.S_IWOTH)  # Error
--- a/resources/test/fixtures/flake8_bandit/S108.py
+++ b/resources/test/fixtures/flake8_bandit/S108.py
@@ -0,0 +1,16 @@
+# ok
+with open("/abc/tmp", "w") as f:
+    f.write("def")
+
+with open("/tmp/abc", "w") as f:
+    f.write("def")
+
+with open("/var/tmp/123", "w") as f:
+    f.write("def")
+
+with open("/dev/shm/unit/test", "w") as f:
+    f.write("def")
+
+# not ok by config
+with open("/foo/bar", "w") as f:
+    f.write("def")
--- a/resources/test/fixtures/flake8_bandit/S113.py
+++ b/resources/test/fixtures/flake8_bandit/S113.py
@@ -0,0 +1,23 @@
+import requests
+
+requests.get('https://gmail.com')
+requests.get('https://gmail.com', timeout=None)
+requests.get('https://gmail.com', timeout=5)
+requests.post('https://gmail.com')
+requests.post('https://gmail.com', timeout=None)
+requests.post('https://gmail.com', timeout=5)
+requests.put('https://gmail.com')
+requests.put('https://gmail.com', timeout=None)
+requests.put('https://gmail.com', timeout=5)
+requests.delete('https://gmail.com')
+requests.delete('https://gmail.com', timeout=None)
+requests.delete('https://gmail.com', timeout=5)
+requests.patch('https://gmail.com')
+requests.patch('https://gmail.com', timeout=None)
+requests.patch('https://gmail.com', timeout=5)
+requests.options('https://gmail.com')
+requests.options('https://gmail.com', timeout=None)
+requests.options('https://gmail.com', timeout=5)
+requests.head('https://gmail.com')
+requests.head('https://gmail.com', timeout=None)
+requests.head('https://gmail.com', timeout=5)
--- a/resources/test/fixtures/flake8_bandit/S324.py
+++ b/resources/test/fixtures/flake8_bandit/S324.py
@@ -0,0 +1,52 @@
+import hashlib
+from hashlib import new as hashlib_new
+from hashlib import sha1 as hashlib_sha1
+
+# Invalid
+
+hashlib.new('md5')
+
+hashlib.new('md4', b'test')
+
+hashlib.new(name='md5', data=b'test')
+
+hashlib.new('MD4', data=b'test')
+
+hashlib.new('sha1')
+
+hashlib.new('sha1', data=b'test')
+
+hashlib.new('sha', data=b'test')
+
+hashlib.new(name='SHA', data=b'test')
+
+hashlib.sha(data=b'test')
+
+hashlib.md5()
+
+hashlib_new('sha1')
+
+hashlib_sha1('sha1')
+
+# usedforsecurity arg only available in Python 3.9+
+hashlib.new('sha1', usedforsecurity=True)
+
+# Valid
+
+hashlib.new('sha256')
+
+hashlib.new('SHA512')
+
+hashlib.sha256(data=b'test')
+
+# usedforsecurity arg only available in Python 3.9+
+hashlib_new(name='sha1', usedforsecurity=False)
+
+# usedforsecurity arg only available in Python 3.9+
+hashlib_sha1(name='sha1', usedforsecurity=False)
+
+# usedforsecurity arg only available in Python 3.9+
+hashlib.md4(usedforsecurity=False)
+
+# usedforsecurity arg only available in Python 3.9+
+hashlib.new(name='sha256', usedforsecurity=False)
--- a/resources/test/fixtures/flake8_bandit/S501.py
+++ b/resources/test/fixtures/flake8_bandit/S501.py
@@ -0,0 +1,40 @@
+import httpx
+import requests
+
+requests.get('https://gmail.com', timeout=30, verify=True)
+requests.get('https://gmail.com', timeout=30, verify=False)
+requests.post('https://gmail.com', timeout=30, verify=True)
+requests.post('https://gmail.com', timeout=30, verify=False)
+requests.put('https://gmail.com', timeout=30, verify=True)
+requests.put('https://gmail.com', timeout=30, verify=False)
+requests.delete('https://gmail.com', timeout=30, verify=True)
+requests.delete('https://gmail.com', timeout=30, verify=False)
+requests.patch('https://gmail.com', timeout=30, verify=True)
+requests.patch('https://gmail.com', timeout=30, verify=False)
+requests.options('https://gmail.com', timeout=30, verify=True)
+requests.options('https://gmail.com', timeout=30, verify=False)
+requests.head('https://gmail.com', timeout=30, verify=True)
+requests.head('https://gmail.com', timeout=30, verify=False)
+
+httpx.request('GET', 'https://gmail.com', verify=True)
+httpx.request('GET', 'https://gmail.com', verify=False)
+httpx.get('https://gmail.com', verify=True)
+httpx.get('https://gmail.com', verify=False)
+httpx.options('https://gmail.com', verify=True)
+httpx.options('https://gmail.com', verify=False)
+httpx.head('https://gmail.com', verify=True)
+httpx.head('https://gmail.com', verify=False)
+httpx.post('https://gmail.com', verify=True)
+httpx.post('https://gmail.com', verify=False)
+httpx.put('https://gmail.com', verify=True)
+httpx.put('https://gmail.com', verify=False)
+httpx.patch('https://gmail.com', verify=True)
+httpx.patch('https://gmail.com', verify=False)
+httpx.delete('https://gmail.com', verify=True)
+httpx.delete('https://gmail.com', verify=False)
+httpx.stream('https://gmail.com', verify=True)
+httpx.stream('https://gmail.com', verify=False)
+httpx.Client()
+httpx.Client(verify=False)
+httpx.AsyncClient()
+httpx.AsyncClient(verify=False)
--- a/resources/test/fixtures/flake8_bandit/S506.py
+++ b/resources/test/fixtures/flake8_bandit/S506.py
@@ -0,0 +1,31 @@
+import json
+import yaml
+from yaml import CSafeLoader
+from yaml import SafeLoader
+from yaml import SafeLoader as NewSafeLoader
+
+
+def test_yaml_load():
+    ystr = yaml.dump({"a": 1, "b": 2, "c": 3})
+    y = yaml.load(ystr)
+    yaml.dump(y)
+    try:
+        y = yaml.load(ystr, Loader=yaml.CSafeLoader)
+    except AttributeError:
+        # CSafeLoader only exists if you build yaml with LibYAML
+        y = yaml.load(ystr, Loader=yaml.SafeLoader)
+
+
+def test_json_load():
+    # no issue should be found
+    j = json.load("{}")
+
+
+yaml.load("{}", Loader=yaml.Loader)
+
+# no issue should be found
+yaml.load("{}", SafeLoader)
+yaml.load("{}", yaml.SafeLoader)
+yaml.load("{}", CSafeLoader)
+yaml.load("{}", yaml.CSafeLoader)
+yaml.load("{}", NewSafeLoader)
--- a/resources/test/fixtures/flake8_pytest_style/PT009.py
+++ b/resources/test/fixtures/flake8_pytest_style/PT009.py
@@ -1,9 +1,76 @@
-import pytest
+import unittest


-def test_xxx():
-    assert 1 == 1  # OK no parameters
+class Test(unittest.TestCase):
+    def test_xxx(self):
+        assert 1 == 1  # OK no parameters

+    def test_assert_true(self):
+        expr = 1
+        msg = "Must be True"
+        self.assertTrue(expr)  # Error
+        self.assertTrue(expr=expr)  # Error
+        self.assertTrue(expr, msg)  # Error
+        self.assertTrue(expr=expr, msg=msg)  # Error
+        self.assertTrue(msg=msg, expr=expr)  # Error
+        self.assertTrue(*(expr, msg))  # Error, unfixable
+        self.assertTrue(**{"expr": expr, "msg": msg})  # Error, unfixable
+        self.assertTrue(msg=msg, expr=expr, unexpected_arg=False)  # Error, unfixable
+        self.assertTrue(msg=msg)  # Error, unfixable

-def test_xxx():
-    self.assertEqual(1, 1)  # Error
+    def test_assert_false(self):
+        self.assertFalse(True)  # Error
+
+    def test_assert_equal(self):
+        self.assertEqual(1, 2)  # Error
+
+    def test_assert_not_equal(self):
+        self.assertNotEqual(1, 1)  # Error
+
+    def test_assert_greater(self):
+        self.assertGreater(1, 2)  # Error
+
+    def test_assert_greater_equal(self):
+        self.assertGreaterEqual(1, 2)  # Error
+
+    def test_assert_less(self):
+        self.assertLess(2, 1)  # Error
+
+    def test_assert_less_equal(self):
+        self.assertLessEqual(1, 2)  # Error
+
+    def test_assert_in(self):
+        self.assertIn(1, [2, 3])  # Error
+
+    def test_assert_not_in(self):
+        self.assertNotIn(2, [2, 3])  # Error
+
+    def test_assert_is_none(self):
+        self.assertIsNone(0)  # Error
+
+    def test_assert_is_not_none(self):
+        self.assertIsNotNone(0)  # Error
+
+    def test_assert_is(self):
+        self.assertIs([], [])  # Error
+
+    def test_assert_is_not(self):
+        self.assertIsNot(1, 1)  # Error
+
+    def test_assert_is_instance(self):
+        self.assertIsInstance(1, str)  # Error
+
+    def test_assert_is_not_instance(self):
+        self.assertNotIsInstance(1, int)  # Error
+
+    def test_assert_regex(self):
+        self.assertRegex("abc", r"def")  # Error
+
+    def test_assert_not_regex(self):
+        self.assertNotRegex("abc", r"abc")  # Error
+
+    def test_assert_regexp_matches(self):
+        self.assertRegexpMatches("abc", r"def")  # Error
+
+    def test_assert_not_regexp_matches(self):
+        self.assertNotRegex("abc", r"abc")  # Error
--- a/resources/test/fixtures/flake8_simplify/SIM101.py
+++ b/resources/test/fixtures/flake8_simplify/SIM101.py
@@ -0,0 +1,23 @@
+if isinstance(a, int) or isinstance(a, float):  # SIM101
+    pass
+
+if isinstance(a, (int, float)) or isinstance(a, bool):  # SIM101
+    pass
+
+if isinstance(a, int) or isinstance(a, float) or isinstance(b, bool):  # SIM101
+    pass
+
+if isinstance(b, bool) or isinstance(a, int) or isinstance(a, float):  # SIM101
+    pass
+
+if isinstance(a, int) or isinstance(b, bool) or isinstance(a, float):  # SIM101
+    pass
+
+if (isinstance(a, int) or isinstance(a, float)) and isinstance(b, bool):  # SIM101
+    pass
+
+if isinstance(a, int) and isinstance(b, bool) or isinstance(a, float):
+    pass
+
+if isinstance(a, bool) or isinstance(b, str):
+    pass
--- a/resources/test/fixtures/flake8_simplify/SIM102.py
+++ b/resources/test/fixtures/flake8_simplify/SIM102.py
@@ -0,0 +1,25 @@
+if a:  # SIM102
+    if b:
+        c
+
+
+if a:
+    pass
+elif b:  # SIM102
+    if c:
+        d
+
+if a:
+    if b:
+        c
+    else:
+        d
+
+if __name__ == "__main__":
+    if foo():
+        ...
+
+if a:
+    d
+    if b:
+        c
--- a/resources/test/fixtures/flake8_simplify/SIM103.py
+++ b/resources/test/fixtures/flake8_simplify/SIM103.py
@@ -0,0 +1,20 @@
+def f():
+    if a:  # SIM103
+        return True
+    else:
+        return False
+
+
+def f():
+    if a:  # OK
+        foo()
+        return True
+    else:
+        return False
+
+
+def f():
+    if a:  # OK
+        return "foo"
+    else:
+        return False
--- a/resources/test/fixtures/flake8_simplify/SIM105.py
+++ b/resources/test/fixtures/flake8_simplify/SIM105.py
@@ -0,0 +1,43 @@
+def foo():
+    pass
+
+try:
+    foo()
+except ValueError:  # SIM105
+    pass
+
+try:
+    foo()
+except (ValueError, OSError):  # SIM105
+    pass
+
+try:
+    foo()
+except:  # SIM105
+    pass
+
+try:
+    foo()
+except (a.Error, b.Error):  # SIM105
+    pass
+
+try:
+    foo()
+except ValueError:
+    print('foo')
+except OSError:
+    pass
+
+try:
+    foo()
+except ValueError:
+    pass
+else:
+    print('bar')
+
+try:
+    foo()
+except ValueError:
+    pass
+finally:
+    print('bar')
--- a/resources/test/fixtures/flake8_simplify/SIM107.py
+++ b/resources/test/fixtures/flake8_simplify/SIM107.py
@@ -0,0 +1,22 @@
+# Bad: This example returns 3!
+def foo():
+    try:
+        1 / 0
+        return "1"
+    except:
+        return "2"
+    finally:
+        return "3"
+
+
+# Good
+def foo():
+    return_value = None
+    try:
+        1 / 0
+        return_value = "1"
+    except:
+        return_value = "2"
+    finally:
+        return_value = "3"  # you might also want to check if "except" happened
+    return return_value
--- a/resources/test/fixtures/flake8_simplify/SIM108.py
+++ b/resources/test/fixtures/flake8_simplify/SIM108.py
@@ -0,0 +1,31 @@
+# Bad
+if a:
+    b = c
+else:
+    b = d
+
+# Good
+b = c if a else d
+
+# https://github.com/MartinThoma/flake8-simplify/issues/115
+if a:
+    b = c
+elif c:
+    b = a
+else:
+    b = d
+
+if True:
+    pass
+elif a:
+    b = 1
+else:
+    b = 2
+
+if True:
+    pass
+else:
+    if a:
+        b = 1
+    else:
+        b = 2
--- a/resources/test/fixtures/flake8_simplify/SIM109.py
+++ b/resources/test/fixtures/flake8_simplify/SIM109.py
@@ -0,0 +1,7 @@
+# Bad
+if a == b or a == c:
+    d
+
+# Good
+if a in (b, c):
+    d
--- a/resources/test/fixtures/flake8_simplify/SIM110.py
+++ b/resources/test/fixtures/flake8_simplify/SIM110.py
@@ -0,0 +1,47 @@
+def f():
+    for x in iterable:  # SIM110
+        if check(x):
+            return True
+    return False
+
+
+def f():
+    for x in iterable:
+        if check(x):
+            return True
+    return True
+
+
+def f():
+    for el in [1, 2, 3]:
+        if is_true(el):
+            return True
+    raise Exception
+
+
+def f():
+    for x in iterable:  # SIM111
+        if check(x):
+            return False
+    return True
+
+
+def f():
+    for x in iterable:  # SIM111
+        if not x.is_empty():
+            return False
+    return True
+
+
+def f():
+    for x in iterable:
+        if check(x):
+            return False
+    return False
+
+
+def f():
+    for x in iterable:
+        if check(x):
+            return "foo"
+    return "bar"
--- a/resources/test/fixtures/flake8_simplify/SIM111.py
+++ b/resources/test/fixtures/flake8_simplify/SIM111.py
@@ -0,0 +1,33 @@
+def f():
+    for x in iterable:  # SIM110
+        if check(x):
+            return True
+    return False
+
+
+def f():
+    for el in [1, 2, 3]:
+        if is_true(el):
+            return True
+    raise Exception
+
+
+def f():
+    for x in iterable:  # SIM111
+        if check(x):
+            return False
+    return True
+
+
+def f():
+    for x in iterable:  # SIM 111
+        if not x.is_empty():
+            return False
+    return True
+
+
+def f():
+    for x in iterable:
+        if check(x):
+            return "foo"
+    return "bar"
--- a/resources/test/fixtures/flake8_simplify/SIM117.py
+++ b/resources/test/fixtures/flake8_simplify/SIM117.py
@@ -0,0 +1,13 @@
+with A() as a:  # SIM117
+    with B() as b:
+        print("hello")
+
+with A() as a:
+    a()
+    with B() as b:
+        print("hello")
+
+with A() as a:
+    with B() as b:
+        print("hello")
+    a()
--- a/resources/test/fixtures/flake8_simplify/SIM201.py
+++ b/resources/test/fixtures/flake8_simplify/SIM201.py
@@ -0,0 +1,17 @@
+if not a == b:  # SIM201
+    pass
+
+if not a == (b + c):  # SIM201
+    pass
+
+if not (a + b) == c:  # SIM201
+    pass
+
+if not a != b:  # OK
+    pass
+
+if a == b:  # OK
+    pass
+
+if not a == b:  # OK
+    raise ValueError()
--- a/resources/test/fixtures/flake8_simplify/SIM202.py
+++ b/resources/test/fixtures/flake8_simplify/SIM202.py
@@ -0,0 +1,14 @@
+if not a != b:  # SIM202
+    pass
+
+if not a != (b + c):  # SIM202
+    pass
+
+if not (a + b) != c:  # SIM202
+    pass
+
+if not a == b:  # OK
+    pass
+
+if a != b:  # OK
+    pass
--- a/resources/test/fixtures/flake8_simplify/SIM208.py
+++ b/resources/test/fixtures/flake8_simplify/SIM208.py
@@ -0,0 +1,14 @@
+if not (not a):  # SIM208
+    pass
+
+if not (not (a == b)):  # SIM208
+    pass
+
+if not a:  # OK
+    pass
+
+if not a == b:  # OK
+    pass
+
+if not a != b:  # OK
+    pass
--- a/resources/test/fixtures/flake8_simplify/SIM210.py
+++ b/resources/test/fixtures/flake8_simplify/SIM210.py
@@ -0,0 +1,7 @@
+a = True if b else False  # SIM210
+
+a = True if b != c else False  # SIM210
+
+a = True if b + c else False  # SIM210
+
+a = False if b else True  # OK
--- a/resources/test/fixtures/flake8_simplify/SIM211.py
+++ b/resources/test/fixtures/flake8_simplify/SIM211.py
@@ -0,0 +1,7 @@
+a = False if b else True  # SIM211
+
+a = False if b != c else True  # SIM211
+
+a = False if b + c else True  # SIM211
+
+a = True if b else False  # OK
--- a/resources/test/fixtures/flake8_simplify/SIM212.py
+++ b/resources/test/fixtures/flake8_simplify/SIM212.py
@@ -0,0 +1,7 @@
+c = b if not a else a  # SIM212
+
+c = b + c if not a else a  # SIM212
+
+c = b if not x else a  # OK
+
+c = a if a else b  # OK
--- a/resources/test/fixtures/flake8_simplify/SIM220.py
+++ b/resources/test/fixtures/flake8_simplify/SIM220.py
@@ -0,0 +1,17 @@
+if a and not a:
+    pass
+
+if (a and not a) and b:
+    pass
+
+if (a and not a) or b:
+    pass
+
+if a:
+    pass
+
+if not a:
+    pass
+
+if a and not b:
+    pass
--- a/resources/test/fixtures/flake8_simplify/SIM221.py
+++ b/resources/test/fixtures/flake8_simplify/SIM221.py
@@ -0,0 +1,17 @@
+if a or not a:
+    pass
+
+if (a or not a) or b:
+    pass
+
+if (a or not a) and b:
+    pass
+
+if a:
+    pass
+
+if not a:
+    pass
+
+if a or not b:
+    pass
--- a/resources/test/fixtures/isort/skip.py
+++ b/resources/test/fixtures/isort/skip.py
@@ -1,10 +1,20 @@
-# isort: off
-import sys
-import os
-import collections
-# isort: on
+def f():
+    # isort: off
+    import sys
+    import os
+    import collections
+    # isort: on

-import sys
-import os  # isort: skip
-import collections
-import abc
+
+def f():
+    import sys
+    import os  # isort: skip
+    import collections
+    import abc
+
+
+def f():
+    import sys
+    import os  # isort:skip
+    import collections
+    import abc
--- a/resources/test/fixtures/isort/split.py
+++ b/resources/test/fixtures/isort/split.py
@@ -3,7 +3,10 @@ import f

 # isort: split

-import a
-import b
 import c
 import d
+
+# isort: split  
+
+import a
+import b
--- a/resources/test/fixtures/pycodestyle/E501_1.py
+++ b/resources/test/fixtures/pycodestyle/E501_1.py
@@ -0,0 +1,6 @@
+# TODO: comments starting with one of the configured task-tags sometimes are longer than line-length so that you can easily find them with `git grep`
+# TODO comments starting with one of the configured task-tags sometimes are longer than line-length so that you can easily find them with `git grep`
+#     TODO    comments starting with one of the configured task-tags sometimes are longer than line-length so that you can easily find them with `git grep`
+# FIXME: comments starting with one of the configured task-tags sometimes are longer than line-length so that you can easily find them with `git grep`
+# FIXME comments starting with one of the configured task-tags sometimes are longer than line-length so that you can easily find them with `git grep`
+#     FIXME    comments starting with one of the configured task-tags sometimes are longer than line-length so that you can easily find them with `git grep`
--- a/resources/test/fixtures/pycodestyle/E999.py
+++ b/resources/test/fixtures/pycodestyle/E999.py
@@ -1,2 +1,4 @@
+
 def x():

+
--- a/resources/test/fixtures/pyflakes/F601.py
+++ b/resources/test/fixtures/pyflakes/F601.py
@@ -10,3 +10,41 @@ x = {
    b"123": 1,
    b"123": 4,
 }
+
+x = {
+    "a": 1,
+    "a": 2,
+    "a": 3,
+    "a": 3,
+}
+
+x = {
+    "a": 1,
+    "a": 2,
+    "a": 3,
+    "a": 3,
+    "a": 4,
+}
+
+x = {
+    "a": 1,
+    "a": 1,
+    "a": 2,
+    "a": 3,
+    "a": 4,
+}
+
+x = {
+    a: 1,
+    "a": 1,
+    a: 1,
+    "a": 2,
+    a: 2,
+    "a": 3,
+    a: 3,
+    "a": 3,
+    a: 4,
+}
+
+x = {"a": 1, "a": 1}
+x = {"a": 1, "b": 2, "a": 1}
--- a/resources/test/fixtures/pyflakes/F602.py
+++ b/resources/test/fixtures/pyflakes/F602.py
@@ -5,3 +5,41 @@ x = {
    a: 2,
    b: 3,
 }
+
+x = {
+    a: 1,
+    a: 2,
+    a: 3,
+    a: 3,
+}
+
+x = {
+    a: 1,
+    a: 2,
+    a: 3,
+    a: 3,
+    a: 4,
+}
+
+x = {
+    a: 1,
+    a: 1,
+    a: 2,
+    a: 3,
+    a: 4,
+}
+
+x = {
+    a: 1,
+    "a": 1,
+    a: 1,
+    "a": 2,
+    a: 2,
+    "a": 3,
+    a: 3,
+    "a": 3,
+    a: 4,
+}
+
+x = {a: 1, a: 1}
+x = {a: 1, b: 2, a: 1}
--- a/resources/test/fixtures/pyflakes/F841_3.py
+++ b/resources/test/fixtures/pyflakes/F841_3.py
@@ -0,0 +1,46 @@
+"""Test case for autofixing F841 violations."""
+
+
+def f():
+    x = 1
+    y = 2
+
+    z = 3
+    print(z)
+
+
+def f():
+    x: int = 1
+    y: int = 2
+
+    z: int = 3
+    print(z)
+
+
+def f():
+    with foo() as x1:
+        pass
+
+    with foo() as (x2, y2):
+        pass
+
+    with (foo() as x3, foo() as y3, foo() as z3):
+        pass
+
+
+def f():
+    (x1, y1) = (1, 2)
+    (x2, y2) = coords2 = (1, 2)
+    coords3 = (x3, y3) = (1, 2)
+
+
+def f():
+    try:
+        1 / 0
+    except ValueError as x1:
+        pass
+
+    try:
+        1 / 0
+    except (ValueError, ZeroDivisionError) as x2:
+        pass
--- a/resources/test/fixtures/pyupgrade/UP028_1.py
+++ b/resources/test/fixtures/pyupgrade/UP028_1.py
@@ -111,3 +111,13 @@ def f():
    class C:
        def __init__(self):
            print(x)
+
+
+def f():
+    for x in y:
+        yield x, x + 1
+
+
+def f():
+    for x, y in z:
+        yield x, y, x + y
--- a/resources/test/fixtures/pyupgrade/UP029.py
+++ b/resources/test/fixtures/pyupgrade/UP029.py
@@ -0,0 +1,9 @@
+from builtins import *
+from builtins import ascii, bytes, compile
+from builtins import str as _str
+from six.moves import filter, zip, zip_longest
+from io import open
+import io
+import six
+import six.moves
+import builtins
--- a/ruff.schema.json
+++ b/ruff.schema.json
@@ -121,6 +121,17 @@
        }
      ]
    },
+    "flake8-bandit": {
+      "description": "Options for the `flake8-bandit` plugin.",
+      "anyOf": [
+        {
+          "$ref": "#/definitions/Flake8BanditOptions"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
    "flake8-bugbear": {
      "description": "Options for the `flake8-bugbear` plugin.",
      "anyOf": [
@@ -288,6 +299,17 @@
        }
      }
    },
+    "pycodestyle": {
+      "description": "Options for the `pycodestyle` plugin.",
+      "anyOf": [
+        {
+          "$ref": "#/definitions/Pycodestyle"
+        },
+        {
+          "type": "null"
+        }
+      ]
+    },
    "pydocstyle": {
      "description": "Options for the `pydocstyle` plugin.",
      "anyOf": [
@@ -366,6 +388,16 @@
        }
      ]
    },
+    "task-tags": {
+      "description": "A list of task tags to recognize (e.g., \"TODO\", \"FIXME\", \"XXX\").\n\nComments starting with these tags will be ignored by commented-out code detection (`ERA`), and skipped by line-length checks (`E501`) if `ignore-overlong-task-comments` is set to `true`.",
+      "type": [
+        "array",
+        "null"
+      ],
+      "items": {
+        "type": "string"
+      }
+    },
    "unfixable": {
      "description": "A list of check code prefixes to consider un-autofix-able.",
      "type": [
@@ -889,16 +921,48 @@
        "S10",
        "S101",
        "S102",
+        "S103",
        "S104",
        "S105",
        "S106",
        "S107",
+        "S108",
+        "S11",
+        "S113",
+        "S3",
+        "S32",
+        "S324",
+        "S5",
+        "S50",
+        "S501",
+        "S506",
        "SIM",
        "SIM1",
+        "SIM10",
+        "SIM101",
+        "SIM102",
+        "SIM103",
+        "SIM105",
+        "SIM107",
+        "SIM108",
+        "SIM109",
        "SIM11",
+        "SIM110",
+        "SIM111",
+        "SIM117",
        "SIM118",
        "SIM2",
+        "SIM20",
+        "SIM201",
+        "SIM202",
+        "SIM208",
+        "SIM21",
+        "SIM210",
+        "SIM211",
+        "SIM212",
        "SIM22",
+        "SIM220",
+        "SIM221",
        "SIM222",
        "SIM223",
        "SIM3",
@@ -970,6 +1034,7 @@
        "UP026",
        "UP027",
        "UP028",
+        "UP029",
        "W",
        "W2",
        "W29",
@@ -1055,6 +1120,32 @@
      },
      "additionalProperties": false
    },
+    "Flake8BanditOptions": {
+      "type": "object",
+      "properties": {
+        "hardcoded-tmp-directory": {
+          "description": "A list of directories to consider temporary.",
+          "type": [
+            "array",
+            "null"
+          ],
+          "items": {
+            "type": "string"
+          }
+        },
+        "hardcoded-tmp-directory-extend": {
+          "description": "A list of directories to consider temporary, in addition to those specified by `hardcoded-tmp-directory`.",
+          "type": [
+            "array",
+            "null"
+          ],
+          "items": {
+            "type": "string"
+          }
+        }
+      },
+      "additionalProperties": false
+    },
    "Flake8BugbearOptions": {
      "type": "object",
      "properties": {
@@ -1438,6 +1529,19 @@
      },
      "additionalProperties": false
    },
+    "Pycodestyle": {
+      "type": "object",
+      "properties": {
+        "ignore-overlong-task-comments": {
+          "description": "Whether or not line-length checks (`E501`) should be triggered for comments starting with `task-tags` (by default: [\"TODO\", \"FIXME\", and \"XXX\"]).",
+          "type": [
+            "boolean",
+            "null"
+          ]
+        }
+      },
+      "additionalProperties": false
+    },
    "Pydocstyle": {
      "type": "object",
      "properties": {
--- a/ruff_dev/Cargo.toml
+++ b/ruff_dev/Cargo.toml
@@ -1,19 +1,18 @@
 [package]
 name = "ruff_dev"
-version = "0.0.210"
+version = "0.0.215"
 edition = "2021"

 [dependencies]
 anyhow = { version = "1.0.66" }
 clap = { version = "4.0.1", features = ["derive"] }
-codegen = { version = "0.2.0" }
 itertools = { version = "0.10.5" }
 libcst = { git = "https://github.com/charliermarsh/LibCST", rev = "f2f0b7a487a8725d161fe8b3ed73a6758b21e177" }
 once_cell = { version = "1.16.0" }
 ruff = { path = ".." }
-rustpython-ast = { features = ["unparse"], git = "https://github.com/RustPython/RustPython.git", rev = "4d53c7cb27c0379adf8b51c4d3d0d2174f41d590" }
-rustpython-common = { git = "https://github.com/RustPython/RustPython.git", rev = "4d53c7cb27c0379adf8b51c4d3d0d2174f41d590" }
-rustpython-parser = { features = ["lalrpop"], git = "https://github.com/RustPython/RustPython.git", rev = "4d53c7cb27c0379adf8b51c4d3d0d2174f41d590" }
+rustpython-ast = { features = ["unparse"], git = "https://github.com/RustPython/RustPython.git", rev = "d532160333ffeb6dbeca2c2728c2391cd1e53b7f" }
+rustpython-common = { git = "https://github.com/RustPython/RustPython.git", rev = "d532160333ffeb6dbeca2c2728c2391cd1e53b7f" }
+rustpython-parser = { features = ["lalrpop"], git = "https://github.com/RustPython/RustPython.git", rev = "d532160333ffeb6dbeca2c2728c2391cd1e53b7f" }
 schemars = { version = "0.8.11" }
 serde_json = {version="1.0.91"}
 strum = { version = "0.24.1", features = ["strum_macros"] }
--- a/ruff_dev/src/generate_all.rs
+++ b/ruff_dev/src/generate_all.rs
@@ -3,10 +3,7 @@
 use anyhow::Result;
 use clap::Args;

-use crate::{
-    generate_check_code_prefix, generate_cli_help, generate_json_schema, generate_options,
-    generate_rules_table,
-};
+use crate::{generate_cli_help, generate_json_schema, generate_options, generate_rules_table};

 #[derive(Args)]
 pub struct Cli {
@@ -16,9 +13,6 @@ pub struct Cli {
 }

 pub fn main(cli: &Cli) -> Result<()> {
-    generate_check_code_prefix::main(&generate_check_code_prefix::Cli {
-        dry_run: cli.dry_run,
-    })?;
    generate_json_schema::main(&generate_json_schema::Cli {
        dry_run: cli.dry_run,
    })?;
--- a/ruff_dev/src/generate_check_code_prefix.rs
+++ b/ruff_dev/src/generate_check_code_prefix.rs
@@ -1,221 +0,0 @@
-//! Generate the `CheckCodePrefix` enum.
-
-use std::collections::{BTreeMap, BTreeSet};
-use std::fs;
-use std::io::Write;
-use std::path::PathBuf;
-use std::process::{Command, Output, Stdio};
-
-use anyhow::{ensure, Result};
-use clap::Parser;
-use codegen::{Scope, Type, Variant};
-use itertools::Itertools;
-use ruff::registry::{CheckCode, PREFIX_REDIRECTS};
-use strum::IntoEnumIterator;
-
-const ALL: &str = "ALL";
-
-#[derive(Parser)]
-#[command(author, version, about, long_about = None)]
-pub struct Cli {
-    /// Write the generated source code to stdout (rather than to
-    /// `src/registry_gen.rs`).
-    #[arg(long)]
-    pub(crate) dry_run: bool,
-}
-
-pub fn main(cli: &Cli) -> Result<()> {
-    // Build up a map from prefix to matching CheckCodes.
-    let mut prefix_to_codes: BTreeMap<String, BTreeSet<CheckCode>> = BTreeMap::default();
-    for check_code in CheckCode::iter() {
-        let code_str: String = check_code.as_ref().to_string();
-        let code_prefix_len = code_str
-            .chars()
-            .take_while(|char| char.is_alphabetic())
-            .count();
-        let code_suffix_len = code_str.len() - code_prefix_len;
-        for i in 0..=code_suffix_len {
-            let prefix = code_str[..code_prefix_len + i].to_string();
-            prefix_to_codes
-                .entry(prefix)
-                .or_default()
-                .insert(check_code.clone());
-        }
-        prefix_to_codes
-            .entry(ALL.to_string())
-            .or_default()
-            .insert(check_code.clone());
-    }
-
-    // Add any prefix aliases (e.g., "U" to "UP").
-    for (alias, check_code) in PREFIX_REDIRECTS.iter() {
-        prefix_to_codes.insert(
-            (*alias).to_string(),
-            prefix_to_codes
-                .get(&check_code.as_ref().to_string())
-                .unwrap_or_else(|| panic!("Unknown CheckCode: {alias:?}"))
-                .clone(),
-        );
-    }
-
-    let mut scope = Scope::new();
-
-    // Create the `CheckCodePrefix` definition.
-    let mut gen = scope
-        .new_enum("CheckCodePrefix")
-        .vis("pub")
-        .derive("EnumString")
-        .derive("AsRefStr")
-        .derive("Debug")
-        .derive("PartialEq")
-        .derive("Eq")
-        .derive("PartialOrd")
-        .derive("Ord")
-        .derive("Clone")
-        .derive("Serialize")
-        .derive("Deserialize")
-        .derive("JsonSchema");
-    for prefix in prefix_to_codes.keys() {
-        gen = gen.push_variant(Variant::new(prefix.to_string()));
-    }
-
-    // Create the `SuffixLength` definition.
-    scope
-        .new_enum("SuffixLength")
-        .vis("pub")
-        .derive("PartialEq")
-        .derive("Eq")
-        .derive("PartialOrd")
-        .derive("Ord")
-        .push_variant(Variant::new("None"))
-        .push_variant(Variant::new("Zero"))
-        .push_variant(Variant::new("One"))
-        .push_variant(Variant::new("Two"))
-        .push_variant(Variant::new("Three"))
-        .push_variant(Variant::new("Four"));
-
-    // Create the `match` statement, to map from definition to relevant codes.
-    let mut gen = scope
-        .new_impl("CheckCodePrefix")
-        .new_fn("codes")
-        .arg_ref_self()
-        .ret(Type::new("Vec<CheckCode>"))
-        .vis("pub")
-        .line("#[allow(clippy::match_same_arms)]")
-        .line("match self {");
-    for (prefix, codes) in &prefix_to_codes {
-        if let Some(target) = PREFIX_REDIRECTS.get(&prefix.as_str()) {
-            gen = gen.line(format!(
-                "CheckCodePrefix::{prefix} => {{ one_time_warning!(\"{{}}{{}} {{}}\", \
-                 \"warning\".yellow().bold(), \":\".bold(), \"`{}` has been remapped to \
-                 `{}`\".bold()); \n vec![{}] }}",
-                prefix,
-                target.as_ref(),
-                codes
-                    .iter()
-                    .map(|code| format!("CheckCode::{}", code.as_ref()))
-                    .join(", ")
-            ));
-        } else {
-            gen = gen.line(format!(
-                "CheckCodePrefix::{prefix} => vec![{}],",
-                codes
-                    .iter()
-                    .map(|code| format!("CheckCode::{}", code.as_ref()))
-                    .join(", ")
-            ));
-        }
-    }
-    gen.line("}");
-
-    // Create the `match` statement, to map from definition to specificity.
-    let mut gen = scope
-        .new_impl("CheckCodePrefix")
-        .new_fn("specificity")
-        .arg_ref_self()
-        .ret(Type::new("SuffixLength"))
-        .vis("pub")
-        .line("#[allow(clippy::match_same_arms)]")
-        .line("match self {");
-    for prefix in prefix_to_codes.keys() {
-        let specificity = if prefix == "ALL" {
-            "None"
-        } else {
-            let num_numeric = prefix.chars().filter(|char| char.is_numeric()).count();
-            match num_numeric {
-                0 => "Zero",
-                1 => "One",
-                2 => "Two",
-                3 => "Three",
-                4 => "Four",
-                _ => panic!("Invalid prefix: {prefix}"),
-            }
-        };
-        gen = gen.line(format!(
-            "CheckCodePrefix::{prefix} => SuffixLength::{specificity},"
-        ));
-    }
-    gen.line("}");
-
-    // Construct the output contents.
-    let mut output = String::new();
-    output
-        .push_str("//! File automatically generated by `examples/generate_check_code_prefix.rs`.");
-    output.push('\n');
-    output.push('\n');
-    output.push_str("use colored::Colorize;");
-    output.push('\n');
-    output.push_str("use schemars::JsonSchema;");
-    output.push('\n');
-    output.push_str("use serde::{Deserialize, Serialize};");
-    output.push('\n');
-    output.push_str("use strum_macros::{AsRefStr, EnumString};");
-    output.push('\n');
-    output.push('\n');
-    output.push_str("use crate::registry::CheckCode;");
-    output.push('\n');
-    output.push_str("use crate::one_time_warning;");
-    output.push('\n');
-    output.push('\n');
-    output.push_str(&scope.to_string());
-    output.push('\n');
-    output.push('\n');
-
-    // Add the list of output categories (not generated).
-    output.push_str("pub const CATEGORIES: &[CheckCodePrefix] = &[");
-    output.push('\n');
-    for prefix in prefix_to_codes.keys() {
-        if prefix.chars().all(char::is_alphabetic)
-            && !PREFIX_REDIRECTS.contains_key(&prefix.as_str())
-        {
-            output.push_str(&format!("CheckCodePrefix::{prefix},"));
-            output.push('\n');
-        }
-    }
-    output.push_str("];");
-    output.push('\n');
-    output.push('\n');
-
-    let rustfmt = Command::new("rustfmt")
-        .stdin(Stdio::piped())
-        .stdout(Stdio::piped())
-        .spawn()?;
-    write!(rustfmt.stdin.as_ref().unwrap(), "{output}")?;
-    let Output { status, stdout, .. } = rustfmt.wait_with_output()?;
-    ensure!(status.success(), "rustfmt failed with {status}");
-
-    // Write the output to `src/registry_gen.rs` (or stdout).
-    if cli.dry_run {
-        println!("{}", String::from_utf8(stdout)?);
-    } else {
-        let file = PathBuf::from(env!("CARGO_MANIFEST_DIR"))
-            .parent()
-            .expect("Failed to find root directory")
-            .join("src/registry_gen.rs");
-        if fs::read(&file).map_or(true, |old| old != stdout) {
-            fs::write(&file, stdout)?;
-        }
-    }
-
-    Ok(())
-}
--- a/ruff_dev/src/generate_cli_help.rs
+++ b/ruff_dev/src/generate_cli_help.rs
@@ -28,7 +28,7 @@ pub fn main(cli: &Cli) -> Result<()> {
        print!("{output}");
    } else {
        replace_readme_section(
-            &format!("```shell\n{output}\n```\n"),
+            &format!("```\n{output}\n```\n"),
            HELP_BEGIN_PRAGMA,
            HELP_END_PRAGMA,
        )?;
--- a/ruff_dev/src/lib.rs
+++ b/ruff_dev/src/lib.rs
@@ -10,9 +10,9 @@
    clippy::similar_names,
    clippy::too_many_lines
 )]
+#![forbid(unsafe_code)]

 pub mod generate_all;
-pub mod generate_check_code_prefix;
 pub mod generate_cli_help;
 pub mod generate_json_schema;
 pub mod generate_options;
--- a/ruff_dev/src/main.rs
+++ b/ruff_dev/src/main.rs
@@ -10,12 +10,13 @@
    clippy::similar_names,
    clippy::too_many_lines
 )]
+#![forbid(unsafe_code)]

 use anyhow::Result;
 use clap::{Parser, Subcommand};
 use ruff_dev::{
-    generate_all, generate_check_code_prefix, generate_cli_help, generate_json_schema,
-    generate_options, generate_rules_table, print_ast, print_cst, print_tokens, round_trip,
+    generate_all, generate_cli_help, generate_json_schema, generate_options, generate_rules_table,
+    print_ast, print_cst, print_tokens, round_trip,
 };

 #[derive(Parser)]
@@ -30,8 +31,6 @@ struct Cli {
 enum Commands {
    /// Run all code and documentation generation steps.
    GenerateAll(generate_all::Cli),
-    /// Generate the `CheckCodePrefix` enum.
-    GenerateCheckCodePrefix(generate_check_code_prefix::Cli),
    /// Generate JSON schema for the TOML configuration file.
    GenerateJSONSchema(generate_json_schema::Cli),
    /// Generate a Markdown-compatible table of supported lint rules.
@@ -54,7 +53,6 @@ fn main() -> Result<()> {
    let cli = Cli::parse();
    match &cli.command {
        Commands::GenerateAll(args) => generate_all::main(args)?,
-        Commands::GenerateCheckCodePrefix(args) => generate_check_code_prefix::main(args)?,
        Commands::GenerateJSONSchema(args) => generate_json_schema::main(args)?,
        Commands::GenerateRulesTable(args) => generate_rules_table::main(args)?,
        Commands::GenerateOptions(args) => generate_options::main(args)?,
--- a/ruff_dev/src/round_trip.rs
+++ b/ruff_dev/src/round_trip.rs
@@ -22,12 +22,8 @@ pub fn main(cli: &Cli) -> Result<()> {
    let python_ast = parser::parse_program(&contents, &cli.file.to_string_lossy())?;
    let locator = SourceCodeLocator::new(&contents);
    let stylist = SourceCodeStyleDetector::from_contents(&contents, &locator);
-    let mut generator = SourceCodeGenerator::new(
-        stylist.indentation(),
-        stylist.quote(),
-        stylist.line_ending(),
-    );
+    let mut generator: SourceCodeGenerator = (&stylist).into();
    generator.unparse_suite(&python_ast);
-    println!("{}", generator.generate()?);
+    println!("{}", generator.generate());
    Ok(())
 }
--- a/ruff_macros/Cargo.toml
+++ b/ruff_macros/Cargo.toml
@@ -1,12 +1,13 @@
 [package]
 name = "ruff_macros"
-version = "0.0.210"
+version = "0.0.215"
 edition = "2021"

 [lib]
 proc-macro = true

 [dependencies]
+once_cell = { version = "1.17.0" }
 proc-macro2 = { version = "1.0.47" }
 quote = { version = "1.0.21" }
 syn = { version = "1.0.103", features = ["derive", "parsing"] }
--- a/ruff_macros/src/check_code_prefix.rs
+++ b/ruff_macros/src/check_code_prefix.rs
@@ -0,0 +1,289 @@
+use std::collections::{BTreeMap, BTreeSet, HashMap};
+
+use once_cell::sync::Lazy;
+use proc_macro2::Span;
+use quote::quote;
+use syn::punctuated::Punctuated;
+use syn::token::Comma;
+use syn::{DataEnum, DeriveInput, Ident, Variant};
+
+const ALL: &str = "ALL";
+
+/// A hash map from deprecated `CheckCodePrefix` to latest `CheckCodePrefix`.
+pub static PREFIX_REDIRECTS: Lazy<HashMap<&'static str, &'static str>> = Lazy::new(|| {
+    HashMap::from_iter([
+        // TODO(charlie): Remove by 2023-01-01.
+        ("U001", "UP001"),
+        ("U003", "UP003"),
+        ("U004", "UP004"),
+        ("U005", "UP005"),
+        ("U006", "UP006"),
+        ("U007", "UP007"),
+        ("U008", "UP008"),
+        ("U009", "UP009"),
+        ("U010", "UP010"),
+        ("U011", "UP011"),
+        ("U012", "UP012"),
+        ("U013", "UP013"),
+        ("U014", "UP014"),
+        ("U015", "UP015"),
+        ("U016", "UP016"),
+        ("U017", "UP017"),
+        ("U019", "UP019"),
+        // TODO(charlie): Remove by 2023-02-01.
+        ("I252", "TID252"),
+        ("M001", "RUF100"),
+        // TODO(charlie): Remove by 2023-02-01.
+        ("PDV002", "PD002"),
+        ("PDV003", "PD003"),
+        ("PDV004", "PD004"),
+        ("PDV007", "PD007"),
+        ("PDV008", "PD008"),
+        ("PDV009", "PD009"),
+        ("PDV010", "PD010"),
+        ("PDV011", "PD011"),
+        ("PDV012", "PD012"),
+        ("PDV013", "PD013"),
+        ("PDV015", "PD015"),
+        ("PDV901", "PD901"),
+        // TODO(charlie): Remove by 2023-02-01.
+        ("R501", "RET501"),
+        ("R502", "RET502"),
+        ("R503", "RET503"),
+        ("R504", "RET504"),
+        ("R505", "RET505"),
+        ("R506", "RET506"),
+        ("R507", "RET507"),
+        ("R508", "RET508"),
+        ("IC001", "ICN001"),
+        ("IC002", "ICN001"),
+        ("IC003", "ICN001"),
+        ("IC004", "ICN001"),
+        // TODO(charlie): Remove by 2023-01-01.
+        ("U", "UP"),
+        ("U0", "UP0"),
+        ("U00", "UP00"),
+        ("U01", "UP01"),
+        // TODO(charlie): Remove by 2023-02-01.
+        ("I2", "TID2"),
+        ("I25", "TID25"),
+        ("M", "RUF100"),
+        ("M0", "RUF100"),
+        // TODO(charlie): Remove by 2023-02-01.
+        ("PDV", "PD"),
+        ("PDV0", "PD0"),
+        ("PDV01", "PD01"),
+        ("PDV9", "PD9"),
+        ("PDV90", "PD90"),
+        // TODO(charlie): Remove by 2023-02-01.
+        ("R", "RET"),
+        ("R5", "RET5"),
+        ("R50", "RET50"),
+        // TODO(charlie): Remove by 2023-02-01.
+        ("IC", "ICN"),
+        ("IC0", "ICN0"),
+    ])
+});
+
+pub fn derive_impl(input: DeriveInput) -> syn::Result<proc_macro2::TokenStream> {
+    let DeriveInput { ident, data, .. } = input;
+    let syn::Data::Enum(DataEnum { variants, .. }) = data else {
+        return Err(syn::Error::new(
+            ident.span(),
+            "Can only derive `CheckCodePrefix` from enums.",
+        ));
+    };
+
+    let prefix_ident = Ident::new(&format!("{ident}Prefix"), ident.span());
+    let prefix = expand(&ident, &prefix_ident, &variants);
+    let expanded = quote! {
+        #[derive(PartialEq, Eq, PartialOrd, Ord)]
+        pub enum SuffixLength {
+            None,
+            Zero,
+            One,
+            Two,
+            Three,
+            Four,
+        }
+
+        #prefix
+    };
+    Ok(expanded)
+}
+
+fn expand(
+    ident: &Ident,
+    prefix_ident: &Ident,
+    variants: &Punctuated<Variant, Comma>,
+) -> proc_macro2::TokenStream {
+    // Build up a map from prefix to matching CheckCodes.
+    let mut prefix_to_codes: BTreeMap<Ident, BTreeSet<String>> = BTreeMap::default();
+    for variant in variants {
+        let span = variant.ident.span();
+        let code_str = variant.ident.to_string();
+        let code_prefix_len = code_str
+            .chars()
+            .take_while(|char| char.is_alphabetic())
+            .count();
+        let code_suffix_len = code_str.len() - code_prefix_len;
+        for i in 0..=code_suffix_len {
+            let prefix = code_str[..code_prefix_len + i].to_string();
+            prefix_to_codes
+                .entry(Ident::new(&prefix, span))
+                .or_default()
+                .insert(code_str.clone());
+        }
+        prefix_to_codes
+            .entry(Ident::new(ALL, span))
+            .or_default()
+            .insert(code_str.clone());
+    }
+
+    // Add any prefix aliases (e.g., "U" to "UP").
+    for (alias, check_code) in PREFIX_REDIRECTS.iter() {
+        prefix_to_codes.insert(
+            Ident::new(alias, Span::call_site()),
+            prefix_to_codes
+                .get(&Ident::new(check_code, Span::call_site()))
+                .unwrap_or_else(|| panic!("Unknown CheckCode: {alias:?}"))
+                .clone(),
+        );
+    }
+
+    let prefix_variants = prefix_to_codes.keys().map(|prefix| {
+        quote! {
+            #prefix
+        }
+    });
+
+    let prefix_impl = generate_impls(ident, prefix_ident, &prefix_to_codes);
+
+    let prefix_redirects = PREFIX_REDIRECTS.iter().map(|(alias, check_code)| {
+        let code = Ident::new(check_code, Span::call_site());
+        quote! {
+            (#alias, #prefix_ident::#code)
+        }
+    });
+
+    quote! {
+        #[derive(
+            ::strum_macros::EnumString,
+            ::strum_macros::AsRefStr,
+            Debug,
+            PartialEq,
+            Eq,
+            PartialOrd,
+            Ord,
+            Clone,
+            ::serde::Serialize,
+            ::serde::Deserialize,
+            ::schemars::JsonSchema,
+        )]
+        pub enum #prefix_ident {
+            #(#prefix_variants,)*
+        }
+
+        #prefix_impl
+
+        /// A hash map from deprecated `CheckCodePrefix` to latest `CheckCodePrefix`.
+        pub static PREFIX_REDIRECTS: ::once_cell::sync::Lazy<::rustc_hash::FxHashMap<&'static str, #prefix_ident>> = ::once_cell::sync::Lazy::new(|| {
+            ::rustc_hash::FxHashMap::from_iter([
+                #(#prefix_redirects),*
+            ])
+        });
+    }
+}
+
+fn generate_impls(
+    ident: &Ident,
+    prefix_ident: &Ident,
+    prefix_to_codes: &BTreeMap<Ident, BTreeSet<String>>,
+) -> proc_macro2::TokenStream {
+    let codes_match_arms = prefix_to_codes.iter().map(|(prefix, codes)| {
+        let codes = codes.iter().map(|code| {
+            let code = Ident::new(code, Span::call_site());
+            quote! {
+                #ident::#code
+            }
+        });
+        let prefix_str = prefix.to_string();
+        if let Some(target) = PREFIX_REDIRECTS.get(prefix_str.as_str()) {
+            quote! {
+                #prefix_ident::#prefix => {
+                    crate::one_time_warning!(
+                        "{}{} {}",
+                        "warning".yellow().bold(),
+                        ":".bold(),
+                        format!("`{}` has been remapped to `{}`", #prefix_str, #target).bold()
+                    );
+                    vec![#(#codes),*]
+                }
+            }
+        } else {
+            quote! {
+                #prefix_ident::#prefix => vec![#(#codes),*],
+            }
+        }
+    });
+
+    let specificity_match_arms = prefix_to_codes.keys().map(|prefix| {
+        if *prefix == ALL {
+            quote! {
+                #prefix_ident::#prefix => SuffixLength::None,
+            }
+        } else {
+            let num_numeric = prefix
+                .to_string()
+                .chars()
+                .filter(|char| char.is_numeric())
+                .count();
+            let suffix_len = match num_numeric {
+                0 => quote! { SuffixLength::Zero },
+                1 => quote! { SuffixLength::One },
+                2 => quote! { SuffixLength::Two },
+                3 => quote! { SuffixLength::Three },
+                4 => quote! { SuffixLength::Four },
+                _ => panic!("Invalid prefix: {prefix}"),
+            };
+            quote! {
+                #prefix_ident::#prefix => #suffix_len,
+            }
+        }
+    });
+
+    let categories = prefix_to_codes.keys().map(|prefix| {
+        let prefix_str = prefix.to_string();
+        if prefix_str.chars().all(char::is_alphabetic)
+            && !PREFIX_REDIRECTS.contains_key(&prefix_str.as_str())
+        {
+            quote! {
+                #prefix_ident::#prefix,
+            }
+        } else {
+            quote! {}
+        }
+    });
+
+    quote! {
+        impl #prefix_ident {
+            pub fn codes(&self) -> Vec<#ident> {
+                use colored::Colorize;
+
+                #[allow(clippy::match_same_arms)]
+                match self {
+                    #(#codes_match_arms)*
+                }
+            }
+
+            pub fn specificity(&self) -> SuffixLength {
+                #[allow(clippy::match_same_arms)]
+                match self {
+                    #(#specificity_match_arms)*
+                }
+            }
+        }
+
+        pub const CATEGORIES: &[#prefix_ident] = &[#(#categories)*];
+    }
+}
--- a/ruff_macros/src/config.rs
+++ b/ruff_macros/src/config.rs
@@ -0,0 +1,203 @@
+use quote::{quote, quote_spanned};
+use syn::parse::{Parse, ParseStream};
+use syn::spanned::Spanned;
+use syn::token::Comma;
+use syn::{
+    AngleBracketedGenericArguments, Attribute, Data, DataStruct, DeriveInput, Field, Fields, Lit,
+    LitStr, Path, PathArguments, PathSegment, Token, Type, TypePath,
+};
+
+pub fn derive_impl(input: DeriveInput) -> syn::Result<proc_macro2::TokenStream> {
+    let DeriveInput { ident, data, .. } = input;
+
+    match data {
+        Data::Struct(DataStruct {
+            fields: Fields::Named(fields),
+            ..
+        }) => {
+            let mut output = vec![];
+
+            for field in fields.named.iter() {
+                let docs: Vec<&Attribute> = field
+                    .attrs
+                    .iter()
+                    .filter(|attr| attr.path.is_ident("doc"))
+                    .collect();
+
+                if docs.is_empty() {
+                    return Err(syn::Error::new(
+                        field.span(),
+                        "Missing documentation for field",
+                    ));
+                }
+
+                if let Some(attr) = field.attrs.iter().find(|attr| attr.path.is_ident("option")) {
+                    output.push(handle_option(field, attr, docs)?);
+                };
+
+                if field
+                    .attrs
+                    .iter()
+                    .any(|attr| attr.path.is_ident("option_group"))
+                {
+                    output.push(handle_option_group(field)?);
+                };
+            }
+
+            Ok(quote! {
+              use crate::settings::options_base::{OptionEntry, OptionField, OptionGroup, ConfigurationOptions};
+
+              #[automatically_derived]
+              impl ConfigurationOptions for #ident {
+                  fn get_available_options() -> Vec<OptionEntry> {
+                      vec![#(#output),*]
+                  }
+              }
+            })
+        }
+        _ => Err(syn::Error::new(
+            ident.span(),
+            "Can only derive ConfigurationOptions from structs with named fields.",
+        )),
+    }
+}
+
+/// For a field with type `Option<Foobar>` where `Foobar` itself is a struct
+/// deriving `ConfigurationOptions`, create code that calls retrieves options
+/// from that group: `Foobar::get_available_options()`
+fn handle_option_group(field: &Field) -> syn::Result<proc_macro2::TokenStream> {
+    let ident = field
+        .ident
+        .as_ref()
+        .expect("Expected to handle named fields");
+
+    match &field.ty {
+        Type::Path(TypePath {
+            path: Path { segments, .. },
+            ..
+        }) => match segments.first() {
+            Some(PathSegment {
+                ident: type_ident,
+                arguments:
+                    PathArguments::AngleBracketed(AngleBracketedGenericArguments { args, .. }),
+                ..
+            }) if type_ident == "Option" => {
+                let path = &args[0];
+                let kebab_name = LitStr::new(&ident.to_string().replace('_', "-"), ident.span());
+
+                Ok(quote_spanned!(
+                    ident.span() => OptionEntry::Group(OptionGroup {
+                        name: #kebab_name,
+                        fields: #path::get_available_options(),
+                    })
+                ))
+            }
+            _ => Err(syn::Error::new(
+                ident.span(),
+                "Expected `Option<_>`  as type.",
+            )),
+        },
+        _ => Err(syn::Error::new(ident.span(), "Expected type.")),
+    }
+}
+
+/// Parse a `doc` attribute into it a string literal.
+fn parse_doc(doc: &Attribute) -> syn::Result<String> {
+    let doc = doc
+        .parse_meta()
+        .map_err(|e| syn::Error::new(doc.span(), e))?;
+
+    match doc {
+        syn::Meta::NameValue(syn::MetaNameValue {
+            lit: Lit::Str(lit_str),
+            ..
+        }) => Ok(lit_str.value()),
+        _ => Err(syn::Error::new(doc.span(), "Expected doc attribute.")),
+    }
+}
+
+/// Parse an `#[option(doc="...", default="...", value_type="...",
+/// example="...")]` attribute and return data in the form of an `OptionField`.
+fn handle_option(
+    field: &Field,
+    attr: &Attribute,
+    docs: Vec<&Attribute>,
+) -> syn::Result<proc_macro2::TokenStream> {
+    // Convert the list of `doc` attributes into a single string.
+    let doc = textwrap::dedent(
+        &docs
+            .into_iter()
+            .map(parse_doc)
+            .collect::<syn::Result<Vec<_>>>()?
+            .join("\n"),
+    )
+    .trim_matches('\n')
+    .to_string();
+
+    let ident = field
+        .ident
+        .as_ref()
+        .expect("Expected to handle named fields");
+
+    let FieldAttributes {
+        default,
+        value_type,
+        example,
+        ..
+    } = attr.parse_args::<FieldAttributes>()?;
+    let kebab_name = LitStr::new(&ident.to_string().replace('_', "-"), ident.span());
+
+    Ok(quote_spanned!(
+        ident.span() => OptionEntry::Field(OptionField {
+            name: #kebab_name,
+            doc: &#doc,
+            default: &#default,
+            value_type: &#value_type,
+            example: &#example,
+        })
+    ))
+}
+
+#[derive(Debug)]
+struct FieldAttributes {
+    default: String,
+    value_type: String,
+    example: String,
+}
+
+impl Parse for FieldAttributes {
+    fn parse(input: ParseStream) -> syn::Result<Self> {
+        let default = _parse_key_value(input, "default")?;
+        input.parse::<Comma>()?;
+        let value_type = _parse_key_value(input, "value_type")?;
+        input.parse::<Comma>()?;
+        let example = _parse_key_value(input, "example")?;
+        if !input.is_empty() {
+            input.parse::<Comma>()?;
+        }
+
+        Ok(FieldAttributes {
+            default,
+            value_type,
+            example: textwrap::dedent(&example).trim_matches('\n').to_string(),
+        })
+    }
+}
+
+fn _parse_key_value(input: ParseStream, name: &str) -> syn::Result<String> {
+    let ident: proc_macro2::Ident = input.parse()?;
+    if ident != name {
+        return Err(syn::Error::new(
+            ident.span(),
+            format!("Expected `{name}` name"),
+        ));
+    }
+
+    input.parse::<Token![=]>()?;
+    let value: Lit = input.parse()?;
+
+    match &value {
+        Lit::Str(v) => Ok(v.value()),
+        _ => Err(syn::Error::new(value.span(), "Expected literal string")),
+    }
+}
--- a/ruff_macros/src/lib.rs
+++ b/ruff_macros/src/lib.rs
@@ -10,216 +10,27 @@
    clippy::similar_names,
    clippy::too_many_lines
 )]
+#![forbid(unsafe_code)]

-use quote::{quote, quote_spanned};
-use syn::parse::{Parse, ParseStream};
-use syn::spanned::Spanned;
-use syn::token::Comma;
-use syn::{
-    parse_macro_input, AngleBracketedGenericArguments, Attribute, Data, DataStruct, DeriveInput,
-    Field, Fields, Lit, LitStr, Path, PathArguments, PathSegment, Token, Type, TypePath,
-};
+use syn::{parse_macro_input, DeriveInput};
+
+mod check_code_prefix;
+mod config;

 #[proc_macro_derive(ConfigurationOptions, attributes(option, doc, option_group))]
-pub fn derive(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
+pub fn derive_config(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
    let input = parse_macro_input!(input as DeriveInput);

-    derive_impl(input)
+    config::derive_impl(input)
        .unwrap_or_else(syn::Error::into_compile_error)
        .into()
 }

-fn derive_impl(input: DeriveInput) -> syn::Result<proc_macro2::TokenStream> {
-    let DeriveInput { ident, data, .. } = input;
+#[proc_macro_derive(CheckCodePrefix)]
+pub fn derive_check_code_prefix(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
+    let input = parse_macro_input!(input as DeriveInput);

-    match data {
-        Data::Struct(DataStruct {
-            fields: Fields::Named(fields),
-            ..
-        }) => {
-            let mut output = vec![];
-
-            for field in fields.named.iter() {
-                let docs: Vec<&Attribute> = field
-                    .attrs
-                    .iter()
-                    .filter(|attr| attr.path.is_ident("doc"))
-                    .collect();
-
-                if docs.is_empty() {
-                    return Err(syn::Error::new(
-                        field.span(),
-                        "Missing documentation for field",
-                    ));
-                }
-
-                if let Some(attr) = field.attrs.iter().find(|attr| attr.path.is_ident("option")) {
-                    output.push(handle_option(field, attr, docs)?);
-                };
-
-                if field
-                    .attrs
-                    .iter()
-                    .any(|attr| attr.path.is_ident("option_group"))
-                {
-                    output.push(handle_option_group(field)?);
-                };
-            }
-
-            Ok(quote! {
-              use crate::settings::options_base::{OptionEntry, OptionField, OptionGroup, ConfigurationOptions};
-
-              #[automatically_derived]
-              impl ConfigurationOptions for #ident {
-                  fn get_available_options() -> Vec<OptionEntry> {
-                      vec![#(#output),*]
-                  }
-              }
-            })
-        }
-        _ => Err(syn::Error::new(
-            ident.span(),
-            "Can only derive ConfigurationOptions from structs with named fields.",
-        )),
-    }
-}
-
-/// For a field with type `Option<Foobar>` where `Foobar` itself is a struct
-/// deriving `ConfigurationOptions`, create code that calls retrieves options
-/// from that group: `Foobar::get_available_options()`
-fn handle_option_group(field: &Field) -> syn::Result<proc_macro2::TokenStream> {
-    let ident = field
-        .ident
-        .as_ref()
-        .expect("Expected to handle named fields");
-
-    match &field.ty {
-        Type::Path(TypePath {
-            path: Path { segments, .. },
-            ..
-        }) => match segments.first() {
-            Some(PathSegment {
-                ident: type_ident,
-                arguments:
-                    PathArguments::AngleBracketed(AngleBracketedGenericArguments { args, .. }),
-                ..
-            }) if type_ident == "Option" => {
-                let path = &args[0];
-                let kebab_name = LitStr::new(&ident.to_string().replace('_', "-"), ident.span());
-
-                Ok(quote_spanned!(
-                    ident.span() => OptionEntry::Group(OptionGroup {
-                        name: #kebab_name,
-                        fields: #path::get_available_options(),
-                    })
-                ))
-            }
-            _ => Err(syn::Error::new(
-                ident.span(),
-                "Expected `Option<_>`  as type.",
-            )),
-        },
-        _ => Err(syn::Error::new(ident.span(), "Expected type.")),
-    }
-}
-
-/// Parse a `doc` attribute into it a string literal.
-fn parse_doc(doc: &Attribute) -> syn::Result<String> {
-    let doc = doc
-        .parse_meta()
-        .map_err(|e| syn::Error::new(doc.span(), e))?;
-
-    match doc {
-        syn::Meta::NameValue(syn::MetaNameValue {
-            lit: Lit::Str(lit_str),
-            ..
-        }) => Ok(lit_str.value()),
-        _ => Err(syn::Error::new(doc.span(), "Expected doc attribute.")),
-    }
-}
-
-/// Parse an `#[option(doc="...", default="...", value_type="...",
-/// example="...")]` attribute and return data in the form of an `OptionField`.
-fn handle_option(
-    field: &Field,
-    attr: &Attribute,
-    docs: Vec<&Attribute>,
-) -> syn::Result<proc_macro2::TokenStream> {
-    // Convert the list of `doc` attributes into a single string.
-    let doc = textwrap::dedent(
-        &docs
-            .into_iter()
-            .map(parse_doc)
-            .collect::<syn::Result<Vec<_>>>()?
-            .join("\n"),
-    )
-    .trim_matches('\n')
-    .to_string();
-
-    let ident = field
-        .ident
-        .as_ref()
-        .expect("Expected to handle named fields");
-
-    let FieldAttributes {
-        default,
-        value_type,
-        example,
-        ..
-    } = attr.parse_args::<FieldAttributes>()?;
-    let kebab_name = LitStr::new(&ident.to_string().replace('_', "-"), ident.span());
-
-    Ok(quote_spanned!(
-        ident.span() => OptionEntry::Field(OptionField {
-            name: #kebab_name,
-            doc: &#doc,
-            default: &#default,
-            value_type: &#value_type,
-            example: &#example,
-        })
-    ))
-}
-
-#[derive(Debug)]
-struct FieldAttributes {
-    default: String,
-    value_type: String,
-    example: String,
-}
-
-impl Parse for FieldAttributes {
-    fn parse(input: ParseStream) -> syn::Result<Self> {
-        let default = _parse_key_value(input, "default")?;
-        input.parse::<Comma>()?;
-        let value_type = _parse_key_value(input, "value_type")?;
-        input.parse::<Comma>()?;
-        let example = _parse_key_value(input, "example")?;
-        if !input.is_empty() {
-            input.parse::<Comma>()?;
-        }
-
-        Ok(FieldAttributes {
-            default,
-            value_type,
-            example: textwrap::dedent(&example).trim_matches('\n').to_string(),
-        })
-    }
-}
-
-fn _parse_key_value(input: ParseStream, name: &str) -> syn::Result<String> {
-    let ident: proc_macro2::Ident = input.parse()?;
-    if ident != name {
-        return Err(syn::Error::new(
-            ident.span(),
-            format!("Expected `{name}` name"),
-        ));
-    }
-
-    input.parse::<Token![=]>()?;
-    let value: Lit = input.parse()?;
-
-    match &value {
-        Lit::Str(v) => Ok(v.value()),
-        _ => Err(syn::Error::new(value.span(), "Expected literal string")),
-    }
+    check_code_prefix::derive_impl(input)
+        .unwrap_or_else(syn::Error::into_compile_error)
+        .into()
 }
--- a/src/ast/branch_detection.rs
+++ b/src/ast/branch_detection.rs
@@ -52,8 +52,8 @@ fn common_ancestor<'a>(
 }

 /// Return the alternative branches for a given node.
-fn alternatives<'a>(node: &'a RefEquality<'a, Stmt>) -> Vec<Vec<RefEquality<'a, Stmt>>> {
-    match &node.0.node {
+fn alternatives<'a>(stmt: &'a RefEquality<'a, Stmt>) -> Vec<Vec<RefEquality<'a, Stmt>>> {
+    match &stmt.node {
        StmtKind::If { body, .. } => vec![body.iter().map(RefEquality).collect()],
        StmtKind::Try {
            body,
@@ -71,16 +71,16 @@ fn alternatives<'a>(node: &'a RefEquality<'a, Stmt>) -> Vec<Vec<RefEquality<'a,
    }
 }

-/// Return `true` if `node` is a descendent of any of the nodes in `ancestors`.
+/// Return `true` if `stmt` is a descendent of any of the nodes in `ancestors`.
 fn descendant_of<'a>(
-    node: &RefEquality<'a, Stmt>,
+    stmt: &RefEquality<'a, Stmt>,
    ancestors: &[RefEquality<'a, Stmt>],
    stop: &RefEquality<'a, Stmt>,
    depths: &FxHashMap<RefEquality<'a, Stmt>, usize>,
    child_to_parent: &FxHashMap<RefEquality<'a, Stmt>, RefEquality<'a, Stmt>>,
 ) -> bool {
    ancestors.iter().any(|ancestor| {
-        common_ancestor(node, ancestor, Some(stop), depths, child_to_parent).is_some()
+        common_ancestor(stmt, ancestor, Some(stop), depths, child_to_parent).is_some()
    })
 }

--- a/src/ast/comparable.rs
+++ b/src/ast/comparable.rs
@@ -0,0 +1,524 @@
+//! An equivalent object hierarchy to the `Expr` hierarchy, but with the ability
+//! to compare expressions for equality (via `Eq` and `Hash`).
+
+use num_bigint::BigInt;
+use rustpython_ast::{
+    Arg, Arguments, Boolop, Cmpop, Comprehension, Constant, Expr, ExprContext, ExprKind, Keyword,
+    Operator, Unaryop,
+};
+
+#[derive(Debug, PartialEq, Eq, Hash)]
+pub enum ComparableExprContext {
+    Load,
+    Store,
+    Del,
+}
+
+impl From<&ExprContext> for ComparableExprContext {
+    fn from(ctx: &ExprContext) -> Self {
+        match ctx {
+            ExprContext::Load => Self::Load,
+            ExprContext::Store => Self::Store,
+            ExprContext::Del => Self::Del,
+        }
+    }
+}
+
+#[derive(Debug, PartialEq, Eq, Hash)]
+pub enum ComparableBoolop {
+    And,
+    Or,
+}
+
+impl From<&Boolop> for ComparableBoolop {
+    fn from(op: &Boolop) -> Self {
+        match op {
+            Boolop::And => Self::And,
+            Boolop::Or => Self::Or,
+        }
+    }
+}
+
+#[derive(Debug, PartialEq, Eq, Hash)]
+pub enum ComparableOperator {
+    Add,
+    Sub,
+    Mult,
+    MatMult,
+    Div,
+    Mod,
+    Pow,
+    LShift,
+    RShift,
+    BitOr,
+    BitXor,
+    BitAnd,
+    FloorDiv,
+}
+
+impl From<&Operator> for ComparableOperator {
+    fn from(op: &Operator) -> Self {
+        match op {
+            Operator::Add => Self::Add,
+            Operator::Sub => Self::Sub,
+            Operator::Mult => Self::Mult,
+            Operator::MatMult => Self::MatMult,
+            Operator::Div => Self::Div,
+            Operator::Mod => Self::Mod,
+            Operator::Pow => Self::Pow,
+            Operator::LShift => Self::LShift,
+            Operator::RShift => Self::RShift,
+            Operator::BitOr => Self::BitOr,
+            Operator::BitXor => Self::BitXor,
+            Operator::BitAnd => Self::BitAnd,
+            Operator::FloorDiv => Self::FloorDiv,
+        }
+    }
+}
+
+#[derive(Debug, PartialEq, Eq, Hash)]
+pub enum ComparableUnaryop {
+    Invert,
+    Not,
+    UAdd,
+    USub,
+}
+
+impl From<&Unaryop> for ComparableUnaryop {
+    fn from(op: &Unaryop) -> Self {
+        match op {
+            Unaryop::Invert => Self::Invert,
+            Unaryop::Not => Self::Not,
+            Unaryop::UAdd => Self::UAdd,
+            Unaryop::USub => Self::USub,
+        }
+    }
+}
+
+#[derive(Debug, PartialEq, Eq, Hash)]
+pub enum ComparableCmpop {
+    Eq,
+    NotEq,
+    Lt,
+    LtE,
+    Gt,
+    GtE,
+    Is,
+    IsNot,
+    In,
+    NotIn,
+}
+
+impl From<&Cmpop> for ComparableCmpop {
+    fn from(op: &Cmpop) -> Self {
+        match op {
+            Cmpop::Eq => Self::Eq,
+            Cmpop::NotEq => Self::NotEq,
+            Cmpop::Lt => Self::Lt,
+            Cmpop::LtE => Self::LtE,
+            Cmpop::Gt => Self::Gt,
+            Cmpop::GtE => Self::GtE,
+            Cmpop::Is => Self::Is,
+            Cmpop::IsNot => Self::IsNot,
+            Cmpop::In => Self::In,
+            Cmpop::NotIn => Self::NotIn,
+        }
+    }
+}
+
+#[derive(Debug, PartialEq, Eq, Hash)]
+pub enum ComparableConstant<'a> {
+    None,
+    Bool(&'a bool),
+    Str(&'a str),
+    Bytes(&'a [u8]),
+    Int(&'a BigInt),
+    Tuple(Vec<ComparableConstant<'a>>),
+    Float(u64),
+    Complex { real: u64, imag: u64 },
+    Ellipsis,
+}
+
+impl<'a> From<&'a Constant> for ComparableConstant<'a> {
+    fn from(constant: &'a Constant) -> Self {
+        match constant {
+            Constant::None => Self::None,
+            Constant::Bool(value) => Self::Bool(value),
+            Constant::Str(value) => Self::Str(value),
+            Constant::Bytes(value) => Self::Bytes(value),
+            Constant::Int(value) => Self::Int(value),
+            Constant::Tuple(value) => {
+                Self::Tuple(value.iter().map(std::convert::Into::into).collect())
+            }
+            Constant::Float(value) => Self::Float(value.to_bits()),
+            Constant::Complex { real, imag } => Self::Complex {
+                real: real.to_bits(),
+                imag: imag.to_bits(),
+            },
+            Constant::Ellipsis => Self::Ellipsis,
+        }
+    }
+}
+
+#[derive(Debug, PartialEq, Eq, Hash)]
+pub struct ComparableArguments<'a> {
+    pub posonlyargs: Vec<ComparableArg<'a>>,
+    pub args: Vec<ComparableArg<'a>>,
+    pub vararg: Option<ComparableArg<'a>>,
+    pub kwonlyargs: Vec<ComparableArg<'a>>,
+    pub kw_defaults: Vec<ComparableExpr<'a>>,
+    pub kwarg: Option<ComparableArg<'a>>,
+    pub defaults: Vec<ComparableExpr<'a>>,
+}
+
+impl<'a> From<&'a Arguments> for ComparableArguments<'a> {
+    fn from(arguments: &'a Arguments) -> Self {
+        Self {
+            posonlyargs: arguments
+                .posonlyargs
+                .iter()
+                .map(std::convert::Into::into)
+                .collect(),
+            args: arguments
+                .args
+                .iter()
+                .map(std::convert::Into::into)
+                .collect(),
+            vararg: arguments.vararg.as_ref().map(std::convert::Into::into),
+            kwonlyargs: arguments
+                .kwonlyargs
+                .iter()
+                .map(std::convert::Into::into)
+                .collect(),
+            kw_defaults: arguments
+                .kw_defaults
+                .iter()
+                .map(std::convert::Into::into)
+                .collect(),
+            kwarg: arguments.vararg.as_ref().map(std::convert::Into::into),
+            defaults: arguments
+                .defaults
+                .iter()
+                .map(std::convert::Into::into)
+                .collect(),
+        }
+    }
+}
+
+impl<'a> From<&'a Box<Arg>> for ComparableArg<'a> {
+    fn from(arg: &'a Box<Arg>) -> Self {
+        (&**arg).into()
+    }
+}
+
+#[derive(Debug, PartialEq, Eq, Hash)]
+pub struct ComparableArg<'a> {
+    pub arg: &'a str,
+    pub annotation: Option<Box<ComparableExpr<'a>>>,
+    pub type_comment: Option<&'a str>,
+}
+
+impl<'a> From<&'a Arg> for ComparableArg<'a> {
+    fn from(arg: &'a Arg) -> Self {
+        Self {
+            arg: &arg.node.arg,
+            annotation: arg.node.annotation.as_ref().map(std::convert::Into::into),
+            type_comment: arg.node.type_comment.as_deref(),
+        }
+    }
+}
+
+#[derive(Debug, PartialEq, Eq, Hash)]
+pub struct ComparableKeyword<'a> {
+    pub arg: Option<&'a str>,
+    pub value: ComparableExpr<'a>,
+}
+
+impl<'a> From<&'a Keyword> for ComparableKeyword<'a> {
+    fn from(keyword: &'a Keyword) -> Self {
+        Self {
+            arg: keyword.node.arg.as_deref(),
+            value: (&keyword.node.value).into(),
+        }
+    }
+}
+
+#[derive(Debug, PartialEq, Eq, Hash)]
+pub struct ComparableComprehension<'a> {
+    pub target: ComparableExpr<'a>,
+    pub iter: ComparableExpr<'a>,
+    pub ifs: Vec<ComparableExpr<'a>>,
+    pub is_async: &'a usize,
+}
+
+impl<'a> From<&'a Comprehension> for ComparableComprehension<'a> {
+    fn from(comprehension: &'a Comprehension) -> Self {
+        Self {
+            target: (&comprehension.target).into(),
+            iter: (&comprehension.iter).into(),
+            ifs: comprehension
+                .ifs
+                .iter()
+                .map(std::convert::Into::into)
+                .collect(),
+            is_async: &comprehension.is_async,
+        }
+    }
+}
+
+#[derive(Debug, PartialEq, Eq, Hash)]
+pub enum ComparableExpr<'a> {
+    BoolOp {
+        op: ComparableBoolop,
+        values: Vec<ComparableExpr<'a>>,
+    },
+    NamedExpr {
+        target: Box<ComparableExpr<'a>>,
+        value: Box<ComparableExpr<'a>>,
+    },
+    BinOp {
+        left: Box<ComparableExpr<'a>>,
+        op: ComparableOperator,
+        right: Box<ComparableExpr<'a>>,
+    },
+    UnaryOp {
+        op: ComparableUnaryop,
+        operand: Box<ComparableExpr<'a>>,
+    },
+    Lambda {
+        args: ComparableArguments<'a>,
+        body: Box<ComparableExpr<'a>>,
+    },
+    IfExp {
+        test: Box<ComparableExpr<'a>>,
+        body: Box<ComparableExpr<'a>>,
+        orelse: Box<ComparableExpr<'a>>,
+    },
+    Dict {
+        keys: Vec<ComparableExpr<'a>>,
+        values: Vec<ComparableExpr<'a>>,
+    },
+    Set {
+        elts: Vec<ComparableExpr<'a>>,
+    },
+    ListComp {
+        elt: Box<ComparableExpr<'a>>,
+        generators: Vec<ComparableComprehension<'a>>,
+    },
+    SetComp {
+        elt: Box<ComparableExpr<'a>>,
+        generators: Vec<ComparableComprehension<'a>>,
+    },
+    DictComp {
+        key: Box<ComparableExpr<'a>>,
+        value: Box<ComparableExpr<'a>>,
+        generators: Vec<ComparableComprehension<'a>>,
+    },
+    GeneratorExp {
+        elt: Box<ComparableExpr<'a>>,
+        generators: Vec<ComparableComprehension<'a>>,
+    },
+    Await {
+        value: Box<ComparableExpr<'a>>,
+    },
+    Yield {
+        value: Option<Box<ComparableExpr<'a>>>,
+    },
+    YieldFrom {
+        value: Box<ComparableExpr<'a>>,
+    },
+    Compare {
+        left: Box<ComparableExpr<'a>>,
+        ops: Vec<ComparableCmpop>,
+        comparators: Vec<ComparableExpr<'a>>,
+    },
+    Call {
+        func: Box<ComparableExpr<'a>>,
+        args: Vec<ComparableExpr<'a>>,
+        keywords: Vec<ComparableKeyword<'a>>,
+    },
+    FormattedValue {
+        value: Box<ComparableExpr<'a>>,
+        conversion: &'a usize,
+        format_spec: Option<Box<ComparableExpr<'a>>>,
+    },
+    JoinedStr {
+        values: Vec<ComparableExpr<'a>>,
+    },
+    Constant {
+        value: ComparableConstant<'a>,
+        kind: Option<&'a str>,
+    },
+    Attribute {
+        value: Box<ComparableExpr<'a>>,
+        attr: &'a str,
+        ctx: ComparableExprContext,
+    },
+    Subscript {
+        value: Box<ComparableExpr<'a>>,
+        slice: Box<ComparableExpr<'a>>,
+        ctx: ComparableExprContext,
+    },
+    Starred {
+        value: Box<ComparableExpr<'a>>,
+        ctx: ComparableExprContext,
+    },
+    Name {
+        id: &'a str,
+        ctx: ComparableExprContext,
+    },
+    List {
+        elts: Vec<ComparableExpr<'a>>,
+        ctx: ComparableExprContext,
+    },
+    Tuple {
+        elts: Vec<ComparableExpr<'a>>,
+        ctx: ComparableExprContext,
+    },
+    Slice {
+        lower: Option<Box<ComparableExpr<'a>>>,
+        upper: Option<Box<ComparableExpr<'a>>>,
+        step: Option<Box<ComparableExpr<'a>>>,
+    },
+}
+
+impl<'a> From<&'a Box<Expr>> for Box<ComparableExpr<'a>> {
+    fn from(expr: &'a Box<Expr>) -> Self {
+        Box::new((&**expr).into())
+    }
+}
+
+impl<'a> From<&'a Expr> for ComparableExpr<'a> {
+    fn from(expr: &'a Expr) -> Self {
+        match &expr.node {
+            ExprKind::BoolOp { op, values } => Self::BoolOp {
+                op: op.into(),
+                values: values.iter().map(std::convert::Into::into).collect(),
+            },
+            ExprKind::NamedExpr { target, value } => Self::NamedExpr {
+                target: target.into(),
+                value: value.into(),
+            },
+            ExprKind::BinOp { left, op, right } => Self::BinOp {
+                left: left.into(),
+                op: op.into(),
+                right: right.into(),
+            },
+            ExprKind::UnaryOp { op, operand } => Self::UnaryOp {
+                op: op.into(),
+                operand: operand.into(),
+            },
+            ExprKind::Lambda { args, body } => Self::Lambda {
+                args: (&**args).into(),
+                body: body.into(),
+            },
+            ExprKind::IfExp { test, body, orelse } => Self::IfExp {
+                test: test.into(),
+                body: body.into(),
+                orelse: orelse.into(),
+            },
+            ExprKind::Dict { keys, values } => Self::Dict {
+                keys: keys.iter().map(std::convert::Into::into).collect(),
+                values: values.iter().map(std::convert::Into::into).collect(),
+            },
+            ExprKind::Set { elts } => Self::Set {
+                elts: elts.iter().map(std::convert::Into::into).collect(),
+            },
+            ExprKind::ListComp { elt, generators } => Self::ListComp {
+                elt: elt.into(),
+                generators: generators.iter().map(std::convert::Into::into).collect(),
+            },
+            ExprKind::SetComp { elt, generators } => Self::SetComp {
+                elt: elt.into(),
+                generators: generators.iter().map(std::convert::Into::into).collect(),
+            },
+            ExprKind::DictComp {
+                key,
+                value,
+                generators,
+            } => Self::DictComp {
+                key: key.into(),
+                value: value.into(),
+                generators: generators.iter().map(std::convert::Into::into).collect(),
+            },
+            ExprKind::GeneratorExp { elt, generators } => Self::GeneratorExp {
+                elt: elt.into(),
+                generators: generators.iter().map(std::convert::Into::into).collect(),
+            },
+            ExprKind::Await { value } => Self::Await {
+                value: value.into(),
+            },
+            ExprKind::Yield { value } => Self::Yield {
+                value: value.as_ref().map(std::convert::Into::into),
+            },
+            ExprKind::YieldFrom { value } => Self::YieldFrom {
+                value: value.into(),
+            },
+            ExprKind::Compare {
+                left,
+                ops,
+                comparators,
+            } => Self::Compare {
+                left: left.into(),
+                ops: ops.iter().map(std::convert::Into::into).collect(),
+                comparators: comparators.iter().map(std::convert::Into::into).collect(),
+            },
+            ExprKind::Call {
+                func,
+                args,
+                keywords,
+            } => Self::Call {
+                func: func.into(),
+                args: args.iter().map(std::convert::Into::into).collect(),
+                keywords: keywords.iter().map(std::convert::Into::into).collect(),
+            },
+            ExprKind::FormattedValue {
+                value,
+                conversion,
+                format_spec,
+            } => Self::FormattedValue {
+                value: value.into(),
+                conversion,
+                format_spec: format_spec.as_ref().map(std::convert::Into::into),
+            },
+            ExprKind::JoinedStr { values } => Self::JoinedStr {
+                values: values.iter().map(std::convert::Into::into).collect(),
+            },
+            ExprKind::Constant { value, kind } => Self::Constant {
+                value: value.into(),
+                kind: kind.as_ref().map(String::as_str),
+            },
+            ExprKind::Attribute { value, attr, ctx } => Self::Attribute {
+                value: value.into(),
+                attr,
+                ctx: ctx.into(),
+            },
+            ExprKind::Subscript { value, slice, ctx } => Self::Subscript {
+                value: value.into(),
+                slice: slice.into(),
+                ctx: ctx.into(),
+            },
+            ExprKind::Starred { value, ctx } => Self::Starred {
+                value: value.into(),
+                ctx: ctx.into(),
+            },
+            ExprKind::Name { id, ctx } => Self::Name {
+                id,
+                ctx: ctx.into(),
+            },
+            ExprKind::List { elts, ctx } => Self::List {
+                elts: elts.iter().map(std::convert::Into::into).collect(),
+                ctx: ctx.into(),
+            },
+            ExprKind::Tuple { elts, ctx } => Self::Tuple {
+                elts: elts.iter().map(std::convert::Into::into).collect(),
+                ctx: ctx.into(),
+            },
+            ExprKind::Slice { lower, upper, step } => Self::Slice {
+                lower: lower.as_ref().map(std::convert::Into::into),
+                upper: upper.as_ref().map(std::convert::Into::into),
+                step: step.as_ref().map(std::convert::Into::into),
+            },
+        }
+    }
+}
--- a/src/ast/helpers.rs
+++ b/src/ast/helpers.rs
@@ -11,7 +11,9 @@ use rustpython_parser::lexer;
 use rustpython_parser::lexer::Tok;
 use rustpython_parser::token::StringKind;

-use crate::ast::types::Range;
+use crate::ast::types::{Binding, BindingKind, Range};
+use crate::source_code_generator::SourceCodeGenerator;
+use crate::source_code_style::SourceCodeStyleDetector;
 use crate::SourceCodeLocator;

 /// Create an `Expr` with default location from an `ExprKind`.
@@ -24,6 +26,20 @@ pub fn create_stmt(node: StmtKind) -> Stmt {
    Stmt::new(Location::default(), Location::default(), node)
 }

+/// Generate source code from an `Expr`.
+pub fn unparse_expr(expr: &Expr, stylist: &SourceCodeStyleDetector) -> String {
+    let mut generator: SourceCodeGenerator = stylist.into();
+    generator.unparse_expr(expr, 0);
+    generator.generate()
+}
+
+/// Generate source code from an `Stmt`.
+pub fn unparse_stmt(stmt: &Stmt, stylist: &SourceCodeStyleDetector) -> String {
+    let mut generator: SourceCodeGenerator = stylist.into();
+    generator.unparse_stmt(stmt);
+    generator.generate()
+}
+
 fn collect_call_path_inner<'a>(expr: &'a Expr, parts: &mut Vec<&'a str>) {
    match &expr.node {
        ExprKind::Call { func, .. } => {
@@ -213,23 +229,6 @@ pub fn is_constant_non_singleton(expr: &Expr) -> bool {
    is_constant(expr) && !is_singleton(expr)
 }

-/// Return `true` if an `Expr` is not a reference to a variable (or something
-/// that could resolve to a variable, like a function call).
-pub fn is_non_variable(expr: &Expr) -> bool {
-    matches!(
-        expr.node,
-        ExprKind::Constant { .. }
-            | ExprKind::Tuple { .. }
-            | ExprKind::List { .. }
-            | ExprKind::Set { .. }
-            | ExprKind::Dict { .. }
-            | ExprKind::SetComp { .. }
-            | ExprKind::ListComp { .. }
-            | ExprKind::DictComp { .. }
-            | ExprKind::GeneratorExp { .. }
-    )
-}
-
 /// Return the `Keyword` with the given name, if it's present in the list of
 /// `Keyword` arguments.
 pub fn find_keyword<'a>(keywords: &'a [Keyword], keyword_name: &str) -> Option<&'a Keyword> {
@@ -316,7 +315,7 @@ pub fn is_super_call_with_arguments(func: &Expr, args: &[Expr]) -> bool {
 }

 /// Format the module name for a relative import.
-pub fn format_import_from(level: Option<&usize>, module: Option<&String>) -> String {
+pub fn format_import_from(level: Option<&usize>, module: Option<&str>) -> String {
    let mut module_name = String::with_capacity(16);
    if let Some(level) = level {
        for _ in 0..*level {
@@ -407,6 +406,22 @@ pub fn identifier_range(stmt: &Stmt, locator: &SourceCodeLocator) -> Range {
    Range::from_located(stmt)
 }

+/// Like `identifier_range`, but accepts a `Binding`.
+pub fn binding_range(binding: &Binding, locator: &SourceCodeLocator) -> Range {
+    if matches!(
+        binding.kind,
+        BindingKind::ClassDefinition | BindingKind::FunctionDefinition
+    ) {
+        if let Some(source) = &binding.source {
+            identifier_range(source, locator)
+        } else {
+            binding.range
+        }
+    } else {
+        binding.range
+    }
+}
+
 // Return the ranges of `Name` tokens within a specified node.
 pub fn find_names<T>(located: &Located<T>, locator: &SourceCodeLocator) -> Vec<Range> {
    let contents = locator.slice_source_code_range(&Range::from_located(located));
@@ -555,7 +570,7 @@ pub fn preceded_by_continuation(stmt: &Stmt, locator: &SourceCodeLocator) -> boo
            Location::new(stmt.location.row(), 0),
        );
        let line = locator.slice_source_code_range(&range);
-        if line.trim().ends_with('\\') {
+        if line.trim_end().ends_with('\\') {
            return true;
        }
    }
@@ -574,6 +589,53 @@ pub fn followed_by_multi_statement_line(stmt: &Stmt, locator: &SourceCodeLocator
    match_trailing_content(stmt, locator)
 }

+#[derive(Default)]
+/// A simple representation of a call's positional and keyword arguments.
+pub struct SimpleCallArgs<'a> {
+    pub args: Vec<&'a Expr>,
+    pub kwargs: FxHashMap<&'a str, &'a Expr>,
+}
+
+impl<'a> SimpleCallArgs<'a> {
+    pub fn new(args: &'a [Expr], keywords: &'a [Keyword]) -> Self {
+        let mut result = SimpleCallArgs::default();
+
+        for arg in args {
+            match &arg.node {
+                ExprKind::Starred { .. } => {
+                    break;
+                }
+                _ => {
+                    result.args.push(arg);
+                }
+            }
+        }
+
+        for keyword in keywords {
+            if let Some(arg) = &keyword.node.arg {
+                result.kwargs.insert(arg, &keyword.node.value);
+            }
+        }
+
+        result
+    }
+
+    /// Get the argument with the given name or position.
+    /// If the argument is not found with either name or position, return
+    /// `None`.
+    pub fn get_argument(&self, name: &'a str, position: Option<usize>) -> Option<&'a Expr> {
+        if let Some(kwarg) = self.kwargs.get(name) {
+            return Some(kwarg);
+        }
+        if let Some(position) = position {
+            if position < self.args.len() {
+                return Some(self.args[position]);
+            }
+        }
+        None
+    }
+}
+
 #[cfg(test)]
 mod tests {
    use anyhow::Result;
--- a/src/ast/mod.rs
+++ b/src/ast/mod.rs
@@ -1,5 +1,6 @@
 pub mod branch_detection;
 pub mod cast;
+pub mod comparable;
 pub mod function_type;
 pub mod helpers;
 pub mod operations;
--- a/src/ast/operations.rs
+++ b/src/ast/operations.rs
@@ -120,7 +120,7 @@ pub fn on_conditional_branch<'a>(parents: &mut impl Iterator<Item = &'a Stmt>) -
 }

 /// Check if a node is in a nested block.
-pub fn in_nested_block<'a>(parents: &mut impl Iterator<Item = &'a Stmt>) -> bool {
+pub fn in_nested_block<'a>(mut parents: impl Iterator<Item = &'a Stmt>) -> bool {
    parents.any(|parent| {
        matches!(
            parent.node,
@@ -212,7 +212,7 @@ pub fn is_unpacking_assignment(parent: &Stmt, child: &Expr) -> bool {
                ExprKind::Set { .. } | ExprKind::List { .. } | ExprKind::Tuple { .. }
            );
            // In `(a, b) = coords = (1, 2)`, `(a, b)` and `coords` are the targets, and
-            // `(a, b`) is a tuple. (We use "tuple" as a placeholder for any
+            // `(a, b)` is a tuple. (We use "tuple" as a placeholder for any
            // unpackable expression.)
            let targets_are_tuples = targets.iter().all(|item| {
                matches!(
--- a/src/ast/types.rs
+++ b/src/ast/types.rs
@@ -1,3 +1,4 @@
+use std::ops::Deref;
 use std::sync::atomic::{AtomicUsize, Ordering};

 use rustc_hash::FxHashMap;
@@ -215,3 +216,23 @@ impl<'a, 'b, T> PartialEq<RefEquality<'b, T>> for RefEquality<'a, T> {
 }

 impl<'a, T> Eq for RefEquality<'a, T> {}
+
+impl<'a, T> Deref for RefEquality<'a, T> {
+    type Target = T;
+
+    fn deref(&self) -> &T {
+        self.0
+    }
+}
+
+impl<'a> From<&RefEquality<'a, Stmt>> for &'a Stmt {
+    fn from(r: &RefEquality<'a, Stmt>) -> Self {
+        r.0
+    }
+}
+
+impl<'a> From<&RefEquality<'a, Expr>> for &'a Expr {
+    fn from(r: &RefEquality<'a, Expr>) -> Self {
+        r.0
+    }
+}
--- a/src/autofix/helpers.rs
+++ b/src/autofix/helpers.rs
@@ -1,11 +1,17 @@
 use anyhow::{bail, Result};
 use itertools::Itertools;
+use libcst_native::{
+    Codegen, CodegenState, ImportNames, ParenthesizableWhitespace, SmallStatement, Statement,
+};
 use rustpython_parser::ast::{ExcepthandlerKind, Location, Stmt, StmtKind};

 use crate::ast::helpers;
 use crate::ast::helpers::to_absolute;
+use crate::ast::types::Range;
 use crate::ast::whitespace::LinesWithTrailingNewline;
 use crate::autofix::Fix;
+use crate::cst::helpers::compose_module_path;
+use crate::cst::matchers::match_module;
 use crate::source_code_locator::SourceCodeLocator;

 /// Determine if a body contains only a single statement, taking into account
@@ -185,6 +191,107 @@ pub fn delete_stmt(
    }
 }

+/// Generate a `Fix` to remove any unused imports from an `import` statement.
+pub fn remove_unused_imports<'a>(
+    unused_imports: impl Iterator<Item = &'a str>,
+    stmt: &Stmt,
+    parent: Option<&Stmt>,
+    deleted: &[&Stmt],
+    locator: &SourceCodeLocator,
+) -> Result<Fix> {
+    let module_text = locator.slice_source_code_range(&Range::from_located(stmt));
+    let mut tree = match_module(&module_text)?;
+
+    let Some(Statement::Simple(body)) = tree.body.first_mut() else {
+        bail!("Expected Statement::Simple");
+    };
+
+    let (aliases, import_module) = match body.body.first_mut() {
+        Some(SmallStatement::Import(import_body)) => (&mut import_body.names, None),
+        Some(SmallStatement::ImportFrom(import_body)) => {
+            if let ImportNames::Aliases(names) = &mut import_body.names {
+                (names, import_body.module.as_ref())
+            } else if let ImportNames::Star(..) = &import_body.names {
+                // Special-case: if the import is a `from ... import *`, then we delete the
+                // entire statement.
+                let mut found_star = false;
+                for unused_import in unused_imports {
+                    let full_name = match import_body.module.as_ref() {
+                        Some(module_name) => format!("{}.*", compose_module_path(module_name),),
+                        None => "*".to_string(),
+                    };
+                    if unused_import == full_name {
+                        found_star = true;
+                    } else {
+                        bail!(
+                            "Expected \"*\" for unused import (got: \"{}\")",
+                            unused_import
+                        );
+                    }
+                }
+                if !found_star {
+                    bail!("Expected \'*\' for unused import");
+                }
+                return delete_stmt(stmt, parent, deleted, locator);
+            } else {
+                bail!("Expected: ImportNames::Aliases | ImportNames::Star");
+            }
+        }
+        _ => bail!("Expected: SmallStatement::ImportFrom | SmallStatement::Import"),
+    };
+
+    // Preserve the trailing comma (or not) from the last entry.
+    let trailing_comma = aliases.last().and_then(|alias| alias.comma.clone());
+
+    for unused_import in unused_imports {
+        let alias_index = aliases.iter().position(|alias| {
+            let full_name = match import_module {
+                Some(module_name) => format!(
+                    "{}.{}",
+                    compose_module_path(module_name),
+                    compose_module_path(&alias.name)
+                ),
+                None => compose_module_path(&alias.name),
+            };
+            full_name == unused_import
+        });
+
+        if let Some(index) = alias_index {
+            aliases.remove(index);
+        }
+    }
+
+    // But avoid destroying any trailing comments.
+    if let Some(alias) = aliases.last_mut() {
+        let has_comment = if let Some(comma) = &alias.comma {
+            match &comma.whitespace_after {
+                ParenthesizableWhitespace::SimpleWhitespace(_) => false,
+                ParenthesizableWhitespace::ParenthesizedWhitespace(whitespace) => {
+                    whitespace.first_line.comment.is_some()
+                }
+            }
+        } else {
+            false
+        };
+        if !has_comment {
+            alias.comma = trailing_comma;
+        }
+    }
+
+    if aliases.is_empty() {
+        delete_stmt(stmt, parent, deleted, locator)
+    } else {
+        let mut state = CodegenState::default();
+        tree.codegen(&mut state);
+
+        Ok(Fix::replacement(
+            state.to_string(),
+            stmt.location,
+            stmt.end_location.unwrap(),
+        ))
+    }
+}
+
 #[cfg(test)]
 mod tests {
    use anyhow::Result;
--- a/src/cache.rs
+++ b/src/cache.rs
@@ -1,6 +1,5 @@
 use std::collections::hash_map::DefaultHasher;
 use std::fs;
-use std::fs::{create_dir_all, File, Metadata};
 use std::hash::{Hash, Hasher};
 use std::io::Write;
 use std::path::{Path, PathBuf};
@@ -8,16 +7,15 @@ use std::path::{Path, PathBuf};
 use anyhow::Result;
 use filetime::FileTime;
 use log::error;
-use once_cell::sync::Lazy;
 use path_absolutize::Absolutize;
 use serde::{Deserialize, Serialize};

 use crate::message::Message;
 use crate::settings::{flags, Settings};

+pub const CACHE_DIR_NAME: &str = ".ruff_cache";
+
 const CARGO_PKG_VERSION: &str = env!("CARGO_PKG_VERSION");
-static CACHE_DIR: Lazy<Option<String>> = Lazy::new(|| std::env::var("RUFF_CACHE_DIR").ok());
-pub const DEFAULT_CACHE_DIR_NAME: &str = ".ruff_cache";

 #[derive(Serialize, Deserialize)]
 struct CacheMetadata {
@@ -39,9 +37,7 @@ struct CheckResult {
 /// Return the cache directory for a given project root. Defers to the
 /// `RUFF_CACHE_DIR` environment variable, if set.
 pub fn cache_dir(project_root: &Path) -> PathBuf {
-    CACHE_DIR
-        .as_ref()
-        .map_or_else(|| project_root.join(DEFAULT_CACHE_DIR_NAME), PathBuf::from)
+    project_root.join(CACHE_DIR_NAME)
 }

 fn content_dir() -> &'static Path {
@@ -60,7 +56,7 @@ fn cache_key<P: AsRef<Path>>(path: P, settings: &Settings, autofix: flags::Autof
 /// Initialize the cache at the specified `Path`.
 pub fn init(path: &Path) -> Result<()> {
    // Create the cache directories.
-    create_dir_all(path.join(content_dir()))?;
+    fs::create_dir_all(path.join(content_dir()))?;

    // Add the CACHEDIR.TAG.
    if !cachedir::is_tagged(path)? {
@@ -70,7 +66,7 @@ pub fn init(path: &Path) -> Result<()> {
    // Add the .gitignore.
    let gitignore_path = path.join(".gitignore");
    if !gitignore_path.exists() {
-        let mut file = File::create(gitignore_path)?;
+        let mut file = fs::File::create(gitignore_path)?;
        file.write_all(b"*")?;
    }

@@ -91,7 +87,7 @@ fn read_sync(cache_dir: &Path, key: u64) -> Result<Vec<u8>, std::io::Error> {
 /// Get a value from the cache.
 pub fn get<P: AsRef<Path>>(
    path: P,
-    metadata: &Metadata,
+    metadata: &fs::Metadata,
    settings: &Settings,
    autofix: flags::Autofix,
 ) -> Option<Vec<Message>> {
@@ -115,7 +111,7 @@ pub fn get<P: AsRef<Path>>(
 /// Set a value in the cache.
 pub fn set<P: AsRef<Path>>(
    path: P,
-    metadata: &Metadata,
+    metadata: &fs::Metadata,
    settings: &Settings,
    autofix: flags::Autofix,
    messages: &[Message],
--- a/Show More
+++ b/Show More