Bump version to 0.0.115

Include flake8-bugbear settings in flake8-to-ruff (#712 )
Use an FNVHashSet for settings.enabled (#711 )
2022-11-12 16:46:26 -05:00 · 2022-11-12 16:46:12 -05:00 · 2022-11-12 16:36:56 -05:00 · 2022-11-12 16:33:12 -05:00 · 2022-11-12 16:32:21 -05:00 · 2022-11-12 16:10:43 -05:00
116 changed files with 3523 additions and 455 deletions
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,6 @@
 repos:
  - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: v0.0.111
+    rev: v0.0.115
    hooks:
      - id: ruff

--- a/Cargo.lock
+++ b/Cargo.lock
@@ -427,11 +427,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bfd4d1b31faaa3a89d7934dbded3111da0d2ef28e3ebccdb4f0179f5929d1ef1"
 dependencies = [
 "iana-time-zone",
- "js-sys",
 "num-integer",
 "num-traits",
- "time",
- "wasm-bindgen",
 "winapi 0.3.9",
 ]

@@ -933,7 +930,7 @@ checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"

 [[package]]
 name = "flake8-to-ruff"
-version = "0.0.111-dev.0"
+version = "0.0.115-dev.0"
 dependencies = [
 "anyhow",
 "clap 4.0.22",
@@ -2240,7 +2237,7 @@ dependencies = [

 [[package]]
 name = "ruff"
-version = "0.0.111"
+version = "0.0.115"
 dependencies = [
 "anyhow",
 "assert_cmd",
@@ -2256,6 +2253,7 @@ dependencies = [
 "dirs 4.0.0",
 "fern",
 "filetime",
+ "fnv",
 "getrandom 0.2.8",
 "glob",
 "insta",
@@ -2287,7 +2285,7 @@ dependencies = [

 [[package]]
 name = "ruff_dev"
-version = "0.0.111"
+version = "0.0.115"
 dependencies = [
 "anyhow",
 "clap 4.0.22",
@@ -2781,17 +2779,6 @@ dependencies = [
 "syn",
 ]

-[[package]]
-name = "time"
-version = "0.1.44"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6db9e6914ab8b1ae1c260a4ae7a49b6c5611b40328a735b21862567685e73255"
-dependencies = [
- "libc",
- "wasi 0.10.0+wasi-snapshot-preview1",
- "winapi 0.3.9",
-]
-
 [[package]]
 name = "tiny-keccak"
 version = "2.0.2"
@@ -3078,12 +3065,6 @@ version = "0.9.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"

-[[package]]
-name = "wasi"
-version = "0.10.0+wasi-snapshot-preview1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
-
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,7 +6,7 @@ members = [

 [package]
 name = "ruff"
-version = "0.0.111"
+version = "0.0.115"
 edition = "2021"

 [lib]
@@ -16,13 +16,14 @@ name = "ruff"
 anyhow = { version = "1.0.66" }
 bincode = { version = "1.3.3" }
 bitflags = { version = "1.3.2" }
-chrono = { version = "0.4.21" }
+chrono = { version = "0.4.21", default-features = false, features = ["clock"] }
 clap = { version = "4.0.1", features = ["derive"] }
 colored = { version = "2.0.0" }
 common-path = { version = "1.0.0" }
 dirs = { version = "4.0.0" }
 fern = { version = "0.6.1" }
 filetime = { version = "0.2.17" }
+fnv = { version = "1.0.7" }
 glob = { version = "0.3.0" }
 itertools = { version = "0.10.5" }
 libcst = { git = "https://github.com/charliermarsh/LibCST", rev = "a13ec97dd4eb925bde4d426c6e422582793b260c" }
--- a/README.md
+++ b/README.md
@@ -57,8 +57,9 @@ Read the [launch blog post](https://notes.crmarsh.com/python-tooling-could-be-mu
   9. [flake8-print](#flake8-print)
   10. [flake8-quotes](#flake8-quotes)
   11. [flake8-annotations](#flake8-annotations)
-   12. [Ruff-specific rules](#ruff-specific-rules)
-   13. [Meta rules](#meta-rules)
+   12. [flake8-2020](#flake8-2020)
+   13. [Ruff-specific rules](#ruff-specific-rules)
+   14. [Meta rules](#meta-rules)
 5. [Editor Integrations](#editor-integrations)
 6. [FAQ](#faq)
 7. [Development](#development)
@@ -98,7 +99,7 @@ Ruff also works with [pre-commit](https://pre-commit.com):
 ```yaml
 repos:
  - repo: https://github.com/charliermarsh/ruff-pre-commit
-    rev: v0.0.111
+    rev: v0.0.115
    hooks:
      - id: ruff
 ```
@@ -440,8 +441,9 @@ For more, see [pyupgrade](https://pypi.org/project/pyupgrade/3.2.0/) on PyPI.
 | U007 | UsePEP604Annotation | Use `X \| Y` for type annotations | 🛠 |
 | U008 | SuperCallWithParameters | Use `super()` instead of `super(__class__, self)` | 🛠 |
 | U009 | PEP3120UnnecessaryCodingComment | utf-8 encoding declaration is unnecessary | 🛠 |
-| U010 | UnnecessaryFutureImport | Unnessary __future__ import `...` for target Python version |  |
-| U011 | UnnecessaryLRUCacheParams | Unnessary parameters to functools.lru_cache | 🛠 |
+| U010 | UnnecessaryFutureImport | Unnecessary `__future__` import `...` for target Python version | 🛠 |
+| U011 | UnnecessaryLRUCacheParams | Unnecessary parameters to `functools.lru_cache` | 🛠 |
+| U012 | UnnecessaryEncodeUTF8 | Unnecessary call to `encode` as UTF-8 | 🛠 |

 ### pep8-naming

@@ -465,6 +467,19 @@ For more, see [pep8-naming](https://pypi.org/project/pep8-naming/0.13.2/) on PyP
 | N817 | CamelcaseImportedAsAcronym | Camelcase `...` imported as acronym `...` |  |
 | N818 | ErrorSuffixOnExceptionName | Exception name `...` should be named with an Error suffix |  |

+### flake8-bandit
+
+For more, see [flake8-bandit](https://pypi.org/project/flake8-bandit/4.1.1/) on PyPI.
+
+| Code | Name | Message | Fix |
+| ---- | ---- | ------- | --- |
+| S101 | AssertUsed | Use of `assert` detected |  |
+| S102 | ExecUsed | Use of `exec` detected |  |
+| S104 | HardcodedBindAllInterfaces | Possible binding to all interfaces |  |
+| S105 | HardcodedPasswordString | Possible hardcoded password: `'...'` |  |
+| S106 | HardcodedPasswordFuncArg | Possible hardcoded password: `'...'` |  |
+| S107 | HardcodedPasswordDefault | Possible hardcoded password: `'...'` |  |
+
 ### flake8-comprehensions

 For more, see [flake8-comprehensions](https://pypi.org/project/flake8-comprehensions/3.10.1/) on PyPI.
@@ -510,6 +525,7 @@ For more, see [flake8-bugbear](https://pypi.org/project/flake8-bugbear/22.10.27/
 | B016 | CannotRaiseLiteral | Cannot raise a literal. Did you intend to return it or raise an Exception? |  |
 | B017 | NoAssertRaisesException | `assertRaises(Exception):` should be considered evil. |  |
 | B018 | UselessExpression | Found useless expression. Either assign it to a variable or remove it. |  |
+| B019 | CachedInstanceMethod | Use of `functools.lru_cache` or `functools.cache` on methods can lead to memory leaks. |  |
 | B025 | DuplicateTryBlockException | try-except block with duplicate exception `Exception` |  |
 | B026 | StarArgUnpackingAfterKeywordArg | Star-arg unpacking after a keyword argument is strongly discouraged. |  |

@@ -561,6 +577,23 @@ For more, see [flake8-annotations](https://pypi.org/project/flake8-annotations/2
 | ANN206 | MissingReturnTypeClassMethod | Missing return type annotation for classmethod `...` |  |
 | ANN401 | DynamicallyTypedExpression | Dynamically typed expressions (typing.Any) are disallowed in `...` |  |

+### flake8-2020
+
+For more, see [flake8-2020](https://pypi.org/project/flake8-2020/1.7.0/) on PyPI.
+
+| Code | Name | Message | Fix |
+| ---- | ---- | ------- | --- |
+| YTT101 | SysVersionSlice3Referenced | `sys.version[:3]` referenced (python3.10), use `sys.version_info` |  |
+| YTT102 | SysVersion2Referenced | `sys.version[2]` referenced (python3.10), use `sys.version_info` |  |
+| YTT103 | SysVersionCmpStr3 | `sys.version` compared to string (python3.10), use `sys.version_info` |  |
+| YTT201 | SysVersionInfo0Eq3Referenced | `sys.version_info[0] == 3` referenced (python4), use `>=` |  |
+| YTT202 | SixPY3Referenced | `six.PY3` referenced (python4), use `not six.PY2` |  |
+| YTT203 | SysVersionInfo1CmpInt | `sys.version_info[1]` compared to integer (python4), compare `sys.version_info` to tuple |  |
+| YTT204 | SysVersionInfoMinorCmpInt | `sys.version_info.minor` compared to integer (python4), compare `sys.version_info` to tuple |  |
+| YTT301 | SysVersion0Referenced | `sys.version[0]` referenced (python10), use `sys.version_info` |  |
+| YTT302 | SysVersionCmpStr10 | `sys.version` compared to string (python10), use `sys.version_info` |  |
+| YTT303 | SysVersionSlice1Referenced | `sys.version[:1]` referenced (python10), use `sys.version_info` |  |
+
 ### Ruff-specific rules

 | Code | Name | Message | Fix |
@@ -666,8 +699,10 @@ including:
 - [`flake8-quotes`](https://pypi.org/project/flake8-quotes/)
 - [`flake8-annotations`](https://pypi.org/project/flake8-annotations/)
 - [`flake8-comprehensions`](https://pypi.org/project/flake8-comprehensions/)
- [`flake8-bugbear`](https://pypi.org/project/flake8-bugbear/) (20/32)
- [`pyupgrade`](https://pypi.org/project/pyupgrade/) (14/34)
+- [`flake8-bandit`](https://pypi.org/project/flake8-bandit/) (6/40)
+- [`flake8-bugbear`](https://pypi.org/project/flake8-bugbear/) (21/32)
+- [`flake8-2020`](https://pypi.org/project/flake8-2020/)
+- [`pyupgrade`](https://pypi.org/project/pyupgrade/) (15/34)
 - [`autoflake`](https://pypi.org/project/autoflake/) (1/7)

 Beyond rule-set parity, Ruff suffers from the following limitations vis-à-vis Flake8:
@@ -688,11 +723,13 @@ Today, Ruff can be used to replace Flake8 when used with any of the following pl
 - [`flake8-print`](https://pypi.org/project/flake8-print/)
 - [`flake8-quotes`](https://pypi.org/project/flake8-quotes/)
 - [`flake8-annotations`](https://pypi.org/project/flake8-annotations/)
+- [`flake8-bandit`](https://pypi.org/project/flake8-bandit/) (6/40)
 - [`flake8-comprehensions`](https://pypi.org/project/flake8-comprehensions/)
- [`flake8-bugbear`](https://pypi.org/project/flake8-bugbear/) (20/32)
+- [`flake8-bugbear`](https://pypi.org/project/flake8-bugbear/) (21/32)
+- [`flake8-2020`](https://pypi.org/project/flake8-2020/)

 Ruff can also replace [`isort`](https://pypi.org/project/isort/), [`yesqa`](https://github.com/asottile/yesqa),
-and a subset of the rules implemented in [`pyupgrade`](https://pypi.org/project/pyupgrade/) (14/34).
+and a subset of the rules implemented in [`pyupgrade`](https://pypi.org/project/pyupgrade/) (15/34).

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

--- a/flake8_to_ruff/Cargo.lock
+++ b/flake8_to_ruff/Cargo.lock
@@ -771,7 +771,7 @@ checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"

 [[package]]
 name = "flake8_to_ruff"
-version = "0.0.111"
+version = "0.0.115"
 dependencies = [
 "anyhow",
 "clap",
@@ -1975,7 +1975,7 @@ dependencies = [

 [[package]]
 name = "ruff"
-version = "0.0.111"
+version = "0.0.115"
 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 = "0.0.111-dev.0"
+version = "0.0.115-dev.0"
 edition = "2021"

 [lib]
--- a/flake8_to_ruff/src/converter.rs
+++ b/flake8_to_ruff/src/converter.rs
@@ -5,7 +5,7 @@ use ruff::checks_gen::CheckCodePrefix;
 use ruff::flake8_quotes::settings::Quote;
 use ruff::settings::options::Options;
 use ruff::settings::pyproject::Pyproject;
-use ruff::{flake8_annotations, flake8_quotes, pep8_naming};
+use ruff::{flake8_annotations, flake8_bugbear, flake8_quotes, pep8_naming};

 use crate::plugin::Plugin;
 use crate::{parser, plugin};
@@ -69,6 +69,7 @@ pub fn convert(
    // Parse each supported option.
    let mut options: Options = Default::default();
    let mut flake8_annotations: flake8_annotations::settings::Options = Default::default();
+    let mut flake8_bugbear: flake8_bugbear::settings::Options = Default::default();
    let mut flake8_quotes: flake8_quotes::settings::Options = Default::default();
    let mut pep8_naming: pep8_naming::settings::Options = Default::default();
    for (key, value) in flake8 {
@@ -109,6 +110,11 @@ pub fn convert(
                        Err(e) => eprintln!("Unable to parse '{key}' property: {e}"),
                    }
                }
+                // flake8-bugbear
+                "extend-immutable-calls" | "extend_immutable_calls" => {
+                    flake8_bugbear.extend_immutable_calls =
+                        Some(parser::parse_strings(value.as_ref()));
+                }
                // flake8-annotations
                "suppress-none-returning" | "suppress_none_returning" => {
                    match parser::parse_bool(value.as_ref()) {
@@ -179,6 +185,12 @@ pub fn convert(
    // Deduplicate and sort.
    options.select = Some(Vec::from_iter(select));
    options.ignore = Some(Vec::from_iter(ignore));
+    if flake8_annotations != Default::default() {
+        options.flake8_annotations = Some(flake8_annotations);
+    }
+    if flake8_bugbear != Default::default() {
+        options.flake8_bugbear = Some(flake8_bugbear);
+    }
    if flake8_quotes != Default::default() {
        options.flake8_quotes = Some(flake8_quotes);
    }
@@ -224,6 +236,7 @@ mod tests {
            dummy_variable_rgx: None,
            target_version: None,
            flake8_annotations: None,
+            flake8_bugbear: None,
            flake8_quotes: None,
            isort: None,
            pep8_naming: None,
@@ -257,6 +270,7 @@ mod tests {
            dummy_variable_rgx: None,
            target_version: None,
            flake8_annotations: None,
+            flake8_bugbear: None,
            flake8_quotes: None,
            isort: None,
            pep8_naming: None,
@@ -290,6 +304,7 @@ mod tests {
            dummy_variable_rgx: None,
            target_version: None,
            flake8_annotations: None,
+            flake8_bugbear: None,
            flake8_quotes: None,
            isort: None,
            pep8_naming: None,
@@ -323,6 +338,7 @@ mod tests {
            dummy_variable_rgx: None,
            target_version: None,
            flake8_annotations: None,
+            flake8_bugbear: None,
            flake8_quotes: None,
            isort: None,
            pep8_naming: None,
@@ -356,6 +372,7 @@ mod tests {
            dummy_variable_rgx: None,
            target_version: None,
            flake8_annotations: None,
+            flake8_bugbear: None,
            flake8_quotes: Some(flake8_quotes::settings::Options {
                inline_quotes: Some(flake8_quotes::settings::Quote::Single),
                multiline_quotes: None,
@@ -432,6 +449,7 @@ mod tests {
            dummy_variable_rgx: None,
            target_version: None,
            flake8_annotations: None,
+            flake8_bugbear: None,
            flake8_quotes: None,
            isort: None,
            pep8_naming: None,
@@ -466,6 +484,7 @@ mod tests {
            dummy_variable_rgx: None,
            target_version: None,
            flake8_annotations: None,
+            flake8_bugbear: None,
            flake8_quotes: Some(flake8_quotes::settings::Options {
                inline_quotes: Some(flake8_quotes::settings::Quote::Single),
                multiline_quotes: None,
--- a/flake8_to_ruff/src/plugin.rs
+++ b/flake8_to_ruff/src/plugin.rs
@@ -6,6 +6,7 @@ use ruff::checks_gen::CheckCodePrefix;

 #[derive(Debug, Clone, Ord, PartialOrd, Eq, PartialEq)]
 pub enum Plugin {
+    Flake8Bandit,
    Flake8Bugbear,
    Flake8Builtins,
    Flake8Comprehensions,
@@ -22,6 +23,7 @@ impl FromStr for Plugin {

    fn from_str(string: &str) -> Result<Self, Self::Err> {
        match string {
+            "flake8-bandit" => Ok(Plugin::Flake8Bandit),
            "flake8-bugbear" => Ok(Plugin::Flake8Bugbear),
            "flake8-builtins" => Ok(Plugin::Flake8Builtins),
            "flake8-comprehensions" => Ok(Plugin::Flake8Comprehensions),
@@ -39,6 +41,7 @@ impl FromStr for Plugin {
 impl Plugin {
    pub fn default(&self) -> CheckCodePrefix {
        match self {
+            Plugin::Flake8Bandit => CheckCodePrefix::S,
            Plugin::Flake8Bugbear => CheckCodePrefix::B,
            Plugin::Flake8Builtins => CheckCodePrefix::A,
            Plugin::Flake8Comprehensions => CheckCodePrefix::C,
@@ -53,6 +56,7 @@ impl Plugin {

    pub fn select(&self, flake8: &HashMap<String, Option<String>>) -> Vec<CheckCodePrefix> {
        match self {
+            Plugin::Flake8Bandit => vec![CheckCodePrefix::S],
            Plugin::Flake8Bugbear => vec![CheckCodePrefix::B],
            Plugin::Flake8Builtins => vec![CheckCodePrefix::A],
            Plugin::Flake8Comprehensions => vec![CheckCodePrefix::C],
@@ -265,6 +269,10 @@ pub fn infer_plugins_from_options(flake8: &HashMap<String, Option<String>>) -> V
            "docstring-convention" | "docstring_convention" => {
                plugins.insert(Plugin::Flake8Docstrings);
            }
+            // flake8-bugbear
+            "extend-immutable-calls" | "extend_immutable_calls" => {
+                plugins.insert(Plugin::Flake8Bugbear);
+            }
            // flake8-builtins
            "builtins-ignorelist" | "builtins_ignorelist" => {
                plugins.insert(Plugin::Flake8Builtins);
@@ -329,6 +337,7 @@ pub fn infer_plugins_from_options(flake8: &HashMap<String, Option<String>>) -> V
 /// `flake8-annotations` is active.
 pub fn infer_plugins_from_codes(codes: &BTreeSet<CheckCodePrefix>) -> Vec<Plugin> {
    [
+        Plugin::Flake8Bandit,
        Plugin::Flake8Bugbear,
        Plugin::Flake8Builtins,
        Plugin::Flake8Comprehensions,
--- a/resources/test/fixtures/B008_extended.py
+++ b/resources/test/fixtures/B008_extended.py
@@ -0,0 +1,20 @@
+from typing import List
+
+import fastapi
+from fastapi import Query
+
+
+def okay(db=fastapi.Depends(get_db)):
+    ...
+
+
+def okay(data: List[str] = fastapi.Query(None)):
+    ...
+
+
+def okay(data: List[str] = Query(None)):
+    ...
+
+
+def error_due_to_missing_import(data: List[str] = Depends(None)):
+    ...
--- a/resources/test/fixtures/B019.py
+++ b/resources/test/fixtures/B019.py
@@ -0,0 +1,108 @@
+"""
+Should emit:
+B019 - on lines 73, 77, 81, 85, 89, 93, 97, 101
+"""
+import functools
+from functools import cache, cached_property, lru_cache
+
+
+def some_other_cache():
+    ...
+
+
+@functools.cache
+def compute_func(self, y):
+    ...
+
+
+class Foo:
+    def __init__(self, x):
+        self.x = x
+
+    def compute_method(self, y):
+        ...
+
+    @some_other_cache
+    def user_cached_instance_method(self, y):
+        ...
+
+    @classmethod
+    @functools.cache
+    def cached_classmethod(cls, y):
+        ...
+
+    @classmethod
+    @cache
+    def other_cached_classmethod(cls, y):
+        ...
+
+    @classmethod
+    @functools.lru_cache
+    def lru_cached_classmethod(cls, y):
+        ...
+
+    @classmethod
+    @lru_cache
+    def other_lru_cached_classmethod(cls, y):
+        ...
+
+    @staticmethod
+    @functools.cache
+    def cached_staticmethod(y):
+        ...
+
+    @staticmethod
+    @cache
+    def other_cached_staticmethod(y):
+        ...
+
+    @staticmethod
+    @functools.lru_cache
+    def lru_cached_staticmethod(y):
+        ...
+
+    @staticmethod
+    @lru_cache
+    def other_lru_cached_staticmethod(y):
+        ...
+
+    @functools.cached_property
+    def some_cached_property(self):
+        ...
+
+    @cached_property
+    def some_other_cached_property(self):
+        ...
+
+    # Remaining methods should emit B019
+    @functools.cache
+    def cached_instance_method(self, y):
+        ...
+
+    @cache
+    def another_cached_instance_method(self, y):
+        ...
+
+    @functools.cache()
+    def called_cached_instance_method(self, y):
+        ...
+
+    @cache()
+    def another_called_cached_instance_method(self, y):
+        ...
+
+    @functools.lru_cache
+    def lru_cached_instance_method(self, y):
+        ...
+
+    @lru_cache
+    def another_lru_cached_instance_method(self, y):
+        ...
+
+    @functools.lru_cache()
+    def called_lru_cached_instance_method(self, y):
+        ...
+
+    @lru_cache()
+    def another_called_lru_cached_instance_method(self, y):
+        ...
--- a/resources/test/fixtures/F401_0.py
+++ b/resources/test/fixtures/F401_0.py
@@ -28,7 +28,6 @@ from blah import ClassA, ClassB, ClassC
 if TYPE_CHECKING:
    from models import Fruit, Nut, Vegetable

-
 if TYPE_CHECKING:
    import shelve
    import importlib
--- a/resources/test/fixtures/S101.py
+++ b/resources/test/fixtures/S101.py
@@ -0,0 +1,11 @@
+# Error
+assert True
+
+def fn():
+    x = 1
+
+    # Error
+    assert x == 1
+
+    # Error
+    assert x == 2
--- a/resources/test/fixtures/S102.py
+++ b/resources/test/fixtures/S102.py
@@ -0,0 +1,5 @@
+def fn():
+    # Error
+    exec('x = 2')
+
+exec('y = 3')
--- a/resources/test/fixtures/S104.py
+++ b/resources/test/fixtures/S104.py
@@ -0,0 +1,19 @@
+def func(address):
+    print(address)
+
+
+# OK
+"OK"
+
+# Error
+"0.0.0.0"
+'0.0.0.0'
+
+
+# Error
+func("0.0.0.0")
+
+
+def my_func():
+    x = "0.0.0.0"
+    print(x)
--- a/resources/test/fixtures/S105.py
+++ b/resources/test/fixtures/S105.py
@@ -0,0 +1,53 @@
+d = {}
+
+# OK
+safe = "s3cr3t"
+password = True
+password = safe
+password is True
+password == 1
+d["safe"] = "s3cr3t"
+
+# Errors
+password = "s3cr3t"
+_pass = "s3cr3t"
+passwd = "s3cr3t"
+pwd = "s3cr3t"
+secret = "s3cr3t"
+token = "s3cr3t"
+secrete = "s3cr3t"
+safe = password = "s3cr3t"
+password = safe = "s3cr3t"
+
+d["password"] = "s3cr3t"
+d["pass"] = "s3cr3t"
+d["passwd"] = "s3cr3t"
+d["pwd"] = "s3cr3t"
+d["secret"] = "s3cr3t"
+d["token"] = "s3cr3t"
+d["secrete"] = "s3cr3t"
+safe = d["password"] = "s3cr3t"
+d["password"] = safe = "s3cr3t"
+
+
+class MyClass:
+    password = "s3cr3t"
+    safe = password
+
+
+MyClass.password = "s3cr3t"
+MyClass._pass = "s3cr3t"
+MyClass.passwd = "s3cr3t"
+MyClass.pwd = "s3cr3t"
+MyClass.secret = "s3cr3t"
+MyClass.token = "s3cr3t"
+MyClass.secrete = "s3cr3t"
+
+password == "s3cr3t"
+_pass == "s3cr3t"
+passwd == "s3cr3t"
+pwd == "s3cr3t"
+secret == "s3cr3t"
+token == "s3cr3t"
+secrete == "s3cr3t"
+password == safe == "s3cr3t"
--- a/resources/test/fixtures/S106.py
+++ b/resources/test/fixtures/S106.py
@@ -0,0 +1,13 @@
+def func(pos, password):
+    pass
+
+
+string = "Hello World"
+
+# OK
+func("s3cr3t")
+func(1, password=string)
+func(pos="s3cr3t", password=string)
+
+# Error
+func(1, password="s3cr3t")
--- a/resources/test/fixtures/S107.py
+++ b/resources/test/fixtures/S107.py
@@ -0,0 +1,30 @@
+def ok(first, default="default"):
+    pass
+
+
+def default(first, password="default"):
+    pass
+
+
+def ok_posonly(first, /, pos, default="posonly"):
+    pass
+
+
+def default_posonly(first, /, pos, password="posonly"):
+    pass
+
+
+def ok_kwonly(first, *, default="kwonly"):
+    pass
+
+
+def default_kwonly(first, *, password="kwonly"):
+    pass
+
+
+def ok_all(first, /, pos, default="posonly", *, kwonly="kwonly"):
+    pass
+
+
+def default_all(first, /, pos, secret="posonly", *, password="kwonly"):
+    pass
--- a/resources/test/fixtures/U010.py
+++ b/resources/test/fixtures/U010.py
@@ -1,5 +1,14 @@
-from __future__ import annotations, nested_scopes, generators
-
+from __future__ import nested_scopes, generators
+from __future__ import with_statement, unicode_literals
 from __future__ import absolute_import, division
-
 from __future__ import generator_stop
+from __future__ import print_function, generator_stop
+from __future__ import invalid_module, generators
+
+if True:
+    from __future__ import generator_stop
+    from __future__ import generators
+
+if True:
+    from __future__ import generator_stop
+    from __future__ import invalid_module, generators
--- a/resources/test/fixtures/U012.py
+++ b/resources/test/fixtures/U012.py
@@ -0,0 +1,52 @@
+# ASCII literals should be replaced by a bytes literal
+"foo".encode("utf-8")  # b"foo"
+"foo".encode("u8")  # b"foo"
+"foo".encode()  # b"foo"
+"foo".encode("UTF8")  # b"foo"
+U"foo".encode("utf-8")  # b"foo"
+"foo".encode(encoding="utf-8")  # b"foo"
+"""
+Lorem
+
+Ipsum
+""".encode(
+    "utf-8"
+)
+# b"""
+# Lorem
+#
+# Ipsum
+# """
+
+# `encode` on variables should not be processed.
+string = "hello there"
+string.encode("utf-8")
+
+bar = "bar"
+f"foo{bar}".encode("utf-8")  # f"foo{bar}".encode()
+encoding = "latin"
+"foo".encode(encoding)
+f"foo{bar}".encode(encoding)
+
+# `encode` with custom args and kwargs should not be processed.
+"foo".encode("utf-8", errors="replace")
+"foo".encode("utf-8", "replace")
+"foo".encode(errors="replace")
+"foo".encode(encoding="utf-8", errors="replace")
+
+# `encode` with custom args and kwargs on unicode should not be processed.
+"unicode text©".encode("utf-8", errors="replace")
+"unicode text©".encode("utf-8", "replace")
+"unicode text©".encode(errors="replace")
+"unicode text©".encode(encoding="utf-8", errors="replace")
+
+# Unicode literals should only be stripped of default encoding.
+"unicode text©".encode("utf-8")  # "unicode text©".encode()
+"unicode text©".encode()
+"unicode text©".encode(encoding="UTF8")  # "unicode text©".encode()
+
+r"fo\o".encode("utf-8")  # br"fo\o"
+u"foo".encode("utf-8")  # b"foo"
+R"fo\o".encode("utf-8")  # br"fo\o"
+U"foo".encode("utf-8")  # b"foo"
+print("foo".encode())  # print(b"foo")
--- a/resources/test/fixtures/YTT101.py
+++ b/resources/test/fixtures/YTT101.py
@@ -0,0 +1,13 @@
+import sys
+from sys import version, version as v
+
+print(sys.version)
+
+print(sys.version[:3])
+print(version[:3])
+
+# ignore from imports with aliases, patches welcome
+print(v[:3])
+# the tool is timid and only flags certain numeric slices
+i = 3
+print(sys.version[:i])
--- a/resources/test/fixtures/YTT102.py
+++ b/resources/test/fixtures/YTT102.py
@@ -0,0 +1,5 @@
+import sys
+from sys import version
+
+py_minor = sys.version[2]
+py_minor = version[2]
--- a/resources/test/fixtures/YTT103.py
+++ b/resources/test/fixtures/YTT103.py
@@ -0,0 +1,8 @@
+import sys
+from sys import version
+
+version < "3.5"
+sys.version < "3.5"
+sys.version <= "3.5"
+sys.version > "3.5"
+sys.version >= "3.5"
--- a/resources/test/fixtures/YTT201.py
+++ b/resources/test/fixtures/YTT201.py
@@ -0,0 +1,10 @@
+import sys
+from sys import version_info
+
+print("{}.{}".format(*sys.version_info))
+PY3 = sys.version_info[0] >= 3
+
+PY3 = sys.version_info[0] == 3
+PY3 = version_info[0] == 3
+PY2 = sys.version_info[0] != 3
+PY2 = version_info[0] != 3
--- a/resources/test/fixtures/YTT202.py
+++ b/resources/test/fixtures/YTT202.py
@@ -0,0 +1,7 @@
+import six
+from six import PY3
+
+if six.PY3:
+    print("3")
+if PY3:
+    print("3")
--- a/resources/test/fixtures/YTT203.py
+++ b/resources/test/fixtures/YTT203.py
@@ -0,0 +1,5 @@
+import sys
+from sys import version_info
+
+sys.version_info[1] >= 5
+version_info[1] < 6
--- a/resources/test/fixtures/YTT204.py
+++ b/resources/test/fixtures/YTT204.py
@@ -0,0 +1,5 @@
+import sys
+from sys import version_info
+
+sys.version_info.minor <= 7
+version_info.minor > 8
--- a/resources/test/fixtures/YTT301.py
+++ b/resources/test/fixtures/YTT301.py
@@ -0,0 +1,5 @@
+import sys
+from sys import version
+
+py_major = sys.version[0]
+py_major = version[0]
--- a/resources/test/fixtures/YTT302.py
+++ b/resources/test/fixtures/YTT302.py
@@ -0,0 +1,8 @@
+import sys
+from sys import version
+
+version < "3"
+sys.version < "3"
+sys.version <= "3"
+sys.version > "3"
+sys.version >= "3"
--- a/resources/test/fixtures/YTT303.py
+++ b/resources/test/fixtures/YTT303.py
@@ -0,0 +1,5 @@
+import sys
+from sys import version
+
+print(sys.version[:1])
+print(version[:1])
--- a/resources/test/fixtures/isort/fit_line_length.py
+++ b/resources/test/fixtures/isort/fit_line_length.py
@@ -1 +1,14 @@
-from collections import Collection
+from line_with_88 import aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+from line_with_89 import (
+    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
+)
+
+if indented:
+    from line_with_88 import aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+    from line_with_89 import aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+    from line_with_90 import aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+    from line_with_91 import aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+    from line_with_92 import aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
+    from line_with_93 import (
+        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,
+    )
--- a/resources/test/fixtures/isort/order_by_type.py
+++ b/resources/test/fixtures/isort/order_by_type.py
@@ -0,0 +1,12 @@
+import StringIO
+import glob
+import os
+import shutil
+import tempfile
+import time
+from subprocess import PIPE, Popen, STDOUT
+from module import Class, CONSTANT, function, BASIC, Apple
+import foo
+import FOO
+import BAR
+import bar
--- a/resources/test/fixtures/isort/pyproject.toml
+++ b/resources/test/fixtures/isort/pyproject.toml
@@ -0,0 +1,2 @@
+[tool.ruff]
+line-length = 88
--- a/resources/test/fixtures/isort/separate_local_folder_imports.py
+++ b/resources/test/fixtures/isort/separate_local_folder_imports.py
@@ -0,0 +1,4 @@
+import sys
+import leading_prefix
+import os
+from . import leading_prefix
--- a/resources/test/fixtures/pyproject.toml
+++ b/resources/test/fixtures/pyproject.toml
@@ -7,6 +7,9 @@ extend-exclude = [
 ]
 per-file-ignores = { "__init__.py" = ["F401"] }

+[tool.ruff.flake8-bugbear]
+extend-immutable-calls = ["fastapi.Depends", "fastapi.Query"]
+
 [tool.ruff.flake8-quotes]
 inline-quotes = "single"
 multiline-quotes = "double"
--- a/ruff/init.py
+++ b/ruff/init.py
--- a/ruff/main.py
+++ b/ruff/main.py
@@ -0,0 +1,7 @@
+import os
+import sys
+import sysconfig
+
+if __name__ == "__main__":
+    ruff = os.path.join(sysconfig.get_path("scripts"), "ruff")
+    os.spawnv(os.P_WAIT, ruff, [ruff, *sys.argv[1:]])
--- a/ruff_dev/Cargo.toml
+++ b/ruff_dev/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ruff_dev"
-version = "0.0.111"
+version = "0.0.115"
 edition = "2021"

 [dependencies]
--- a/src/ast/helpers.rs
+++ b/src/ast/helpers.rs
@@ -1,5 +1,4 @@
-use std::collections::BTreeSet;
-
+use fnv::FnvHashSet;
 use once_cell::sync::Lazy;
 use regex::Regex;
 use rustpython_ast::{Excepthandler, ExcepthandlerKind, Expr, ExprKind, Location, StmtKind};
@@ -47,7 +46,7 @@ pub fn match_name_or_attr_from_module(
    expr: &Expr,
    target: &str,
    module: &str,
-    imports: Option<&BTreeSet<&str>>,
+    imports: Option<&FnvHashSet<&str>>,
 ) -> bool {
    match &expr.node {
        ExprKind::Attribute { value, attr, .. } => match &value.node {
--- a/src/check_ast.rs
+++ b/src/check_ast.rs
@@ -1,9 +1,10 @@
 //! Lint rules based on AST traversal.

-use std::collections::{BTreeMap, BTreeSet};
+use std::collections::BTreeMap;
 use std::ops::Deref;
 use std::path::Path;

+use fnv::{FnvHashMap, FnvHashSet};
 use log::error;
 use rustpython_parser::ast::{
    Arg, Arguments, Constant, Excepthandler, ExcepthandlerKind, Expr, ExprContext, ExprKind,
@@ -32,23 +33,11 @@ use crate::settings::Settings;
 use crate::source_code_locator::SourceCodeLocator;
 use crate::visibility::{module_visibility, transition_scope, Modifier, Visibility, VisibleScope};
 use crate::{
-    docstrings, flake8_annotations, flake8_bugbear, flake8_builtins, flake8_comprehensions,
-    flake8_print, pep8_naming, pycodestyle, pydocstyle, pyflakes, pyupgrade,
+    docstrings, flake8_2020, flake8_annotations, flake8_bandit, flake8_bugbear, flake8_builtins,
+    flake8_comprehensions, flake8_print, pep8_naming, pycodestyle, pydocstyle, pyflakes, pyupgrade,
 };

 const GLOBAL_SCOPE_INDEX: usize = 0;
-const TRACK_FROM_IMPORTS: [&str; 10] = [
-    "collections",
-    "collections.abc",
-    "contextlib",
-    "functools",
-    "re",
-    "typing",
-    "typing.io",
-    "typing.re",
-    "typing_extensions",
-    "weakref",
-];

 pub struct Checker<'a> {
    // Input data.
@@ -62,9 +51,9 @@ pub struct Checker<'a> {
    definitions: Vec<(Definition<'a>, Visibility)>,
    // Edit tracking.
    // TODO(charlie): Instead of exposing deletions, wrap in a public API.
-    pub(crate) deletions: BTreeSet<usize>,
+    pub(crate) deletions: FnvHashSet<usize>,
    // Import tracking.
-    pub(crate) from_imports: BTreeMap<&'a str, BTreeSet<&'a str>>,
+    pub(crate) from_imports: FnvHashMap<&'a str, FnvHashSet<&'a str>>,
    // Retain all scopes and parent nodes, along with a stack of indexes to track which are active
    // at various points in time.
    pub(crate) parents: Vec<&'a Stmt>,
@@ -344,6 +333,15 @@ where
                if self.settings.enabled.contains(&CheckCode::B018) {
                    flake8_bugbear::plugins::useless_expression(self, body);
                }
+                if self.settings.enabled.contains(&CheckCode::B019) {
+                    flake8_bugbear::plugins::cached_instance_method(self, decorator_list);
+                }
+
+                if self.settings.enabled.contains(&CheckCode::S107) {
+                    self.add_checks(
+                        flake8_bandit::plugins::hardcoded_password_default(args).into_iter(),
+                    );
+                }

                self.check_builtin_shadowing(name, Range::from_located(stmt), true);

@@ -398,14 +396,14 @@ where
            StmtKind::Return { .. } => {
                if self.settings.enabled.contains(&CheckCode::F706) {
                    if let Some(index) = self.scope_stack.last().cloned() {
-                        match self.scopes[index].kind {
-                            ScopeKind::Class(_) | ScopeKind::Module => {
-                                self.add_check(Check::new(
-                                    CheckKind::ReturnOutsideFunction,
-                                    Range::from_located(stmt),
-                                ));
-                            }
-                            _ => {}
+                        if matches!(
+                            self.scopes[index].kind,
+                            ScopeKind::Class(_) | ScopeKind::Module
+                        ) {
+                            self.add_check(Check::new(
+                                CheckKind::ReturnOutsideFunction,
+                                Range::from_located(stmt),
+                            ));
                        }
                    }
                }
@@ -578,17 +576,15 @@ where
                // references like `from typing import Union`.
                if level.map(|level| level == 0).unwrap_or(true) {
                    if let Some(module) = module {
-                        if TRACK_FROM_IMPORTS.contains(&module.as_str()) {
-                            self.from_imports
-                                .entry(module)
-                                .or_insert_with(BTreeSet::new)
-                                .extend(
-                                    names
-                                        .iter()
-                                        .filter(|alias| alias.node.asname.is_none())
-                                        .map(|alias| alias.node.name.as_str()),
-                                )
-                        }
+                        self.from_imports
+                            .entry(module)
+                            .or_insert_with(FnvHashSet::default)
+                            .extend(
+                                names
+                                    .iter()
+                                    .filter(|alias| alias.node.asname.is_none())
+                                    .map(|alias| alias.node.name.as_str()),
+                            )
                    }
                }

@@ -601,6 +597,12 @@ where
                    }
                }

+                if let Some("__future__") = module.as_deref() {
+                    if self.settings.enabled.contains(&CheckCode::U010) {
+                        pyupgrade::plugins::unnecessary_future_import(self, stmt, names);
+                    }
+                }
+
                for alias in names {
                    if let Some("__future__") = module.as_deref() {
                        let name = alias.node.asname.as_ref().unwrap_or(&alias.node.name);
@@ -633,14 +635,6 @@ where
                            }
                        }

-                        if self.settings.enabled.contains(&CheckCode::U010) {
-                            pyupgrade::plugins::unnecessary_future_import(
-                                self,
-                                stmt,
-                                &alias.node.name,
-                            );
-                        }
-
                        if self.settings.enabled.contains(&CheckCode::F404) && !self.futures_allowed
                        {
                            self.add_check(Check::new(
@@ -800,6 +794,9 @@ where
                if self.settings.enabled.contains(&CheckCode::B011) {
                    flake8_bugbear::plugins::assert_false(self, stmt, test, msg);
                }
+                if self.settings.enabled.contains(&CheckCode::S101) {
+                    self.add_check(flake8_bandit::plugins::assert_used(stmt));
+                }
            }
            StmtKind::With { items, .. } | StmtKind::AsyncWith { items, .. } => {
                if self.settings.enabled.contains(&CheckCode::B017) {
@@ -840,6 +837,13 @@ where
                if self.settings.enabled.contains(&CheckCode::B003) {
                    flake8_bugbear::plugins::assignment_to_os_environ(self, targets);
                }
+                if self.settings.enabled.contains(&CheckCode::S105) {
+                    if let Some(check) =
+                        flake8_bandit::plugins::assign_hardcoded_password_string(value, targets)
+                    {
+                        self.add_check(check);
+                    }
+                }
            }
            StmtKind::AnnAssign { value, .. } => {
                if self.settings.enabled.contains(&CheckCode::E731) {
@@ -984,6 +988,14 @@ where
                if self.match_typing_module(value, "Literal") {
                    self.in_literal = true;
                }
+
+                if self.settings.enabled.contains(&CheckCode::YTT101)
+                    || self.settings.enabled.contains(&CheckCode::YTT102)
+                    || self.settings.enabled.contains(&CheckCode::YTT301)
+                    || self.settings.enabled.contains(&CheckCode::YTT303)
+                {
+                    flake8_2020::plugins::subscript(self, value, slice);
+                }
            }
            ExprKind::Tuple { elts, ctx } | ExprKind::List { elts, ctx } => {
                if matches!(ctx, ExprContext::Store) {
@@ -1001,34 +1013,40 @@ where
                    }
                }
            }
-            ExprKind::Name { id, ctx } => match ctx {
-                ExprContext::Load => {
-                    // Ex) List[...]
-                    if self.settings.enabled.contains(&CheckCode::U006)
-                        && self.settings.target_version >= PythonVersion::Py39
-                        && typing::is_pep585_builtin(expr, self.from_imports.get("typing"))
-                    {
-                        pyupgrade::plugins::use_pep585_annotation(self, expr, id);
-                    }
-
-                    self.handle_node_load(expr);
-                }
-                ExprContext::Store => {
-                    if self.settings.enabled.contains(&CheckCode::E741) {
-                        if let Some(check) = pycodestyle::checks::ambiguous_variable_name(
-                            id,
-                            Range::from_located(expr),
-                        ) {
-                            self.add_check(check);
+            ExprKind::Name { id, ctx } => {
+                match ctx {
+                    ExprContext::Load => {
+                        // Ex) List[...]
+                        if self.settings.enabled.contains(&CheckCode::U006)
+                            && self.settings.target_version >= PythonVersion::Py39
+                            && typing::is_pep585_builtin(expr, self.from_imports.get("typing"))
+                        {
+                            pyupgrade::plugins::use_pep585_annotation(self, expr, id);
                        }
+
+                        self.handle_node_load(expr);
                    }
+                    ExprContext::Store => {
+                        if self.settings.enabled.contains(&CheckCode::E741) {
+                            if let Some(check) = pycodestyle::checks::ambiguous_variable_name(
+                                id,
+                                Range::from_located(expr),
+                            ) {
+                                self.add_check(check);
+                            }
+                        }

-                    self.check_builtin_shadowing(id, Range::from_located(expr), true);
+                        self.check_builtin_shadowing(id, Range::from_located(expr), true);

-                    self.handle_node_store(expr, self.current_parent());
+                        self.handle_node_store(expr, self.current_parent());
+                    }
+                    ExprContext::Del => self.handle_node_delete(expr),
                }
-                ExprContext::Del => self.handle_node_delete(expr),
-            },
+
+                if self.settings.enabled.contains(&CheckCode::YTT202) {
+                    flake8_2020::plugins::name_or_attribute(self, expr);
+                }
+            }
            ExprKind::Attribute { attr, .. } => {
                // Ex) typing.List[...]
                if self.settings.enabled.contains(&CheckCode::U006)
@@ -1037,6 +1055,10 @@ where
                {
                    pyupgrade::plugins::use_pep585_annotation(self, expr, attr);
                }
+
+                if self.settings.enabled.contains(&CheckCode::YTT202) {
+                    flake8_2020::plugins::name_or_attribute(self, expr);
+                }
            }
            ExprKind::Call {
                func,
@@ -1052,6 +1074,10 @@ where
                    pyupgrade::plugins::super_call_with_parameters(self, expr, func, args);
                }

+                if self.settings.enabled.contains(&CheckCode::U012) {
+                    pyupgrade::plugins::unnecessary_encode_utf8(self, expr, func, args, keywords);
+                }
+
                // flake8-print
                if self.settings.enabled.contains(&CheckCode::T201)
                    || self.settings.enabled.contains(&CheckCode::T203)
@@ -1083,6 +1109,16 @@ where
                        self, args, keywords,
                    );
                }
+                if self.settings.enabled.contains(&CheckCode::S102) {
+                    if let Some(check) = flake8_bandit::plugins::exec_used(expr, func) {
+                        self.add_check(check);
+                    }
+                }
+                if self.settings.enabled.contains(&CheckCode::S106) {
+                    self.add_checks(
+                        flake8_bandit::plugins::hardcoded_password_func_arg(keywords).into_iter(),
+                    );
+                }

                // flake8-comprehensions
                if self.settings.enabled.contains(&CheckCode::C400) {
@@ -1422,6 +1458,25 @@ where
                        .into_iter(),
                    );
                }
+
+                if self.settings.enabled.contains(&CheckCode::YTT103)
+                    || self.settings.enabled.contains(&CheckCode::YTT201)
+                    || self.settings.enabled.contains(&CheckCode::YTT203)
+                    || self.settings.enabled.contains(&CheckCode::YTT204)
+                    || self.settings.enabled.contains(&CheckCode::YTT302)
+                {
+                    flake8_2020::plugins::compare(self, left, ops, comparators);
+                }
+
+                if self.settings.enabled.contains(&CheckCode::S105) {
+                    self.add_checks(
+                        flake8_bandit::plugins::compare_to_hardcoded_password_string(
+                            left,
+                            comparators,
+                        )
+                        .into_iter(),
+                    );
+                }
            }
            ExprKind::Constant {
                value: Constant::Str(value),
@@ -1431,6 +1486,14 @@ where
                    self.deferred_string_annotations
                        .push((Range::from_located(expr), value));
                }
+                if self.settings.enabled.contains(&CheckCode::S104) {
+                    if let Some(check) = flake8_bandit::plugins::hardcoded_bind_all_interfaces(
+                        value,
+                        &Range::from_located(expr),
+                    ) {
+                        self.add_check(check);
+                    }
+                }
            }
            ExprKind::Lambda { args, .. } => {
                // Visit the arguments, but avoid the body, which will be deferred.
@@ -2381,16 +2444,20 @@ impl<'a> Checker<'a> {
                            .iter()
                            .map(|index| self.parents[*index])
                            .collect();
-
-                        let removal_fn = match kind {
+                        match match kind {
                            ImportKind::Import => pyflakes::fixes::remove_unused_imports,
                            ImportKind::ImportFrom => pyflakes::fixes::remove_unused_import_froms,
-                        };
-
-                        match removal_fn(self.locator, &full_names, child, parent, &deleted) {
-                            Ok(fix) => Some(fix),
+                        }(
+                            self.locator, &full_names, child, parent, &deleted
+                        ) {
+                            Ok(fix) => {
+                                if fix.patch.content.is_empty() || fix.patch.content == "pass" {
+                                    self.deletions.insert(defined_by);
+                                }
+                                Some(fix)
+                            }
                            Err(e) => {
-                                error!("Failed to fix unused imports: {}", e);
+                                error!("Failed to remove unused imports: {}", e);
                                None
                            }
                        }
--- a/src/check_lines.rs
+++ b/src/check_lines.rs
@@ -47,6 +47,12 @@ pub fn check_lines(
    let mut line_checks = vec![];
    let mut ignored = vec![];

+    checks.sort_by_key(|check| check.location);
+    let mut checks_iter = checks.iter().enumerate().peekable();
+    if let Some((_index, check)) = checks_iter.peek() {
+        assert!(check.location.row() >= 1);
+    }
+
    let lines: Vec<&str> = contents.lines().collect();
    for (lineno, line) in lines.iter().enumerate() {
        // Grab the noqa (logical) line number for the current (physical) line.
@@ -88,26 +94,25 @@ pub fn check_lines(
        }

        // Remove any ignored checks.
-        // TODO(charlie): Only validate checks for the current line.
-        for (index, check) in checks.iter().enumerate() {
-            if check.location.row() == lineno + 1 {
-                let noqa = noqa_directives
-                    .entry(noqa_lineno)
-                    .or_insert_with(|| (noqa::extract_noqa_directive(lines[noqa_lineno]), vec![]));
+        while let Some((index, check)) =
+            checks_iter.next_if(|(_index, check)| check.location.row() == lineno + 1)
+        {
+            let noqa = noqa_directives
+                .entry(noqa_lineno)
+                .or_insert_with(|| (noqa::extract_noqa_directive(lines[noqa_lineno]), vec![]));

-                match noqa {
-                    (Directive::All(..), matches) => {
-                        matches.push(check.kind.code().as_ref());
-                        ignored.push(index)
-                    }
-                    (Directive::Codes(_, _, codes), matches) => {
-                        if codes.contains(&check.kind.code().as_ref()) {
-                            matches.push(check.kind.code().as_ref());
-                            ignored.push(index);
-                        }
-                    }
-                    (Directive::None, _) => {}
+            match noqa {
+                (Directive::All(..), matches) => {
+                    matches.push(check.kind.code().as_ref());
+                    ignored.push(index)
                }
+                (Directive::Codes(_, _, codes), matches) => {
+                    if codes.contains(&check.kind.code().as_ref()) {
+                        matches.push(check.kind.code().as_ref());
+                        ignored.push(index);
+                    }
+                }
+                (Directive::None, _) => {}
            }
        }

--- a/src/checks.rs
+++ b/src/checks.rs
@@ -93,6 +93,7 @@ pub enum CheckCode {
    B016,
    B017,
    B018,
+    B019,
    B025,
    B026,
    // flake8-comprehensions
@@ -132,6 +133,17 @@ pub enum CheckCode {
    ANN205,
    ANN206,
    ANN401,
+    // flake8-2020
+    YTT101,
+    YTT102,
+    YTT103,
+    YTT201,
+    YTT202,
+    YTT203,
+    YTT204,
+    YTT301,
+    YTT302,
+    YTT303,
    // pyupgrade
    U001,
    U002,
@@ -144,6 +156,7 @@ pub enum CheckCode {
    U009,
    U010,
    U011,
+    U012,
    // pydocstyle
    D100,
    D101,
@@ -207,6 +220,13 @@ pub enum CheckCode {
    N818,
    // isort
    I001,
+    // flake8-bandit
+    S101,
+    S102,
+    S104,
+    S105,
+    S106,
+    S107,
    // Ruff
    RUF001,
    RUF002,
@@ -223,12 +243,14 @@ pub enum CheckCategory {
    Pydocstyle,
    Pyupgrade,
    PEP8Naming,
+    Flake8Bandit,
    Flake8Comprehensions,
    Flake8Bugbear,
    Flake8Builtins,
    Flake8Print,
    Flake8Quotes,
    Flake8Annotations,
+    Flake82020,
    Ruff,
    Meta,
 }
@@ -239,12 +261,14 @@ impl CheckCategory {
            CheckCategory::Pycodestyle => "pycodestyle",
            CheckCategory::Pyflakes => "Pyflakes",
            CheckCategory::Isort => "isort",
+            CheckCategory::Flake8Bandit => "flake8-bandit",
            CheckCategory::Flake8Builtins => "flake8-builtins",
            CheckCategory::Flake8Bugbear => "flake8-bugbear",
            CheckCategory::Flake8Comprehensions => "flake8-comprehensions",
            CheckCategory::Flake8Print => "flake8-print",
            CheckCategory::Flake8Quotes => "flake8-quotes",
            CheckCategory::Flake8Annotations => "flake8-annotations",
+            CheckCategory::Flake82020 => "flake8-2020",
            CheckCategory::Pyupgrade => "pyupgrade",
            CheckCategory::Pydocstyle => "pydocstyle",
            CheckCategory::PEP8Naming => "pep8-naming",
@@ -272,9 +296,11 @@ impl CheckCategory {
            CheckCategory::Flake8Annotations => {
                Some("https://pypi.org/project/flake8-annotations/2.9.1/")
            }
+            CheckCategory::Flake82020 => Some("https://pypi.org/project/flake8-2020/1.7.0/"),
            CheckCategory::Pyupgrade => Some("https://pypi.org/project/pyupgrade/3.2.0/"),
            CheckCategory::Pydocstyle => Some("https://pypi.org/project/pydocstyle/6.1.1/"),
            CheckCategory::PEP8Naming => Some("https://pypi.org/project/pep8-naming/0.13.2/"),
+            CheckCategory::Flake8Bandit => Some("https://pypi.org/project/flake8-bandit/4.1.1/"),
            CheckCategory::Ruff => None,
            CheckCategory::Meta => None,
        }
@@ -366,6 +392,7 @@ pub enum CheckKind {
    CannotRaiseLiteral,
    NoAssertRaisesException,
    UselessExpression,
+    CachedInstanceMethod,
    DuplicateTryBlockException(String),
    StarArgUnpackingAfterKeywordArg,
    // flake8-comprehensions
@@ -405,6 +432,17 @@ pub enum CheckKind {
    MissingReturnTypeStaticMethod(String),
    MissingReturnTypeClassMethod(String),
    DynamicallyTypedExpression(String),
+    // flake8-2020
+    SysVersionSlice3Referenced,
+    SysVersion2Referenced,
+    SysVersionCmpStr3,
+    SysVersionInfo0Eq3Referenced,
+    SixPY3Referenced,
+    SysVersionInfo1CmpInt,
+    SysVersionInfoMinorCmpInt,
+    SysVersion0Referenced,
+    SysVersionCmpStr10,
+    SysVersionSlice1Referenced,
    // pyupgrade
    TypeOfPrimitive(Primitive),
    UnnecessaryAbspath,
@@ -415,8 +453,9 @@ pub enum CheckKind {
    UsePEP604Annotation,
    SuperCallWithParameters,
    PEP3120UnnecessaryCodingComment,
-    UnnecessaryFutureImport(String),
+    UnnecessaryFutureImport(Vec<String>),
    UnnecessaryLRUCacheParams,
+    UnnecessaryEncodeUTF8,
    // pydocstyle
    BlankLineAfterLastSection(String),
    BlankLineAfterSection(String),
@@ -480,6 +519,13 @@ pub enum CheckKind {
    ErrorSuffixOnExceptionName(String),
    // isort
    UnsortedImports,
+    // flake8-bandit
+    AssertUsed,
+    ExecUsed,
+    HardcodedBindAllInterfaces,
+    HardcodedPasswordString(String),
+    HardcodedPasswordFuncArg(String),
+    HardcodedPasswordDefault(String),
    // Ruff
    AmbiguousUnicodeCharacterString(char, char),
    AmbiguousUnicodeCharacterDocstring(char, char),
@@ -585,6 +631,7 @@ impl CheckCode {
            CheckCode::B016 => CheckKind::CannotRaiseLiteral,
            CheckCode::B017 => CheckKind::NoAssertRaisesException,
            CheckCode::B018 => CheckKind::UselessExpression,
+            CheckCode::B019 => CheckKind::CachedInstanceMethod,
            CheckCode::B025 => CheckKind::DuplicateTryBlockException("Exception".to_string()),
            CheckCode::B026 => CheckKind::StarArgUnpackingAfterKeywordArg,
            // flake8-comprehensions
@@ -637,6 +684,17 @@ impl CheckCode {
            CheckCode::ANN205 => CheckKind::MissingReturnTypeStaticMethod("...".to_string()),
            CheckCode::ANN206 => CheckKind::MissingReturnTypeClassMethod("...".to_string()),
            CheckCode::ANN401 => CheckKind::DynamicallyTypedExpression("...".to_string()),
+            // flake8-2020
+            CheckCode::YTT101 => CheckKind::SysVersionSlice3Referenced,
+            CheckCode::YTT102 => CheckKind::SysVersion2Referenced,
+            CheckCode::YTT103 => CheckKind::SysVersionCmpStr3,
+            CheckCode::YTT201 => CheckKind::SysVersionInfo0Eq3Referenced,
+            CheckCode::YTT202 => CheckKind::SixPY3Referenced,
+            CheckCode::YTT203 => CheckKind::SysVersionInfo1CmpInt,
+            CheckCode::YTT204 => CheckKind::SysVersionInfoMinorCmpInt,
+            CheckCode::YTT301 => CheckKind::SysVersion0Referenced,
+            CheckCode::YTT302 => CheckKind::SysVersionCmpStr10,
+            CheckCode::YTT303 => CheckKind::SysVersionSlice1Referenced,
            // pyupgrade
            CheckCode::U001 => CheckKind::UselessMetaclassType,
            CheckCode::U002 => CheckKind::UnnecessaryAbspath,
@@ -650,8 +708,9 @@ impl CheckCode {
            CheckCode::U007 => CheckKind::UsePEP604Annotation,
            CheckCode::U008 => CheckKind::SuperCallWithParameters,
            CheckCode::U009 => CheckKind::PEP3120UnnecessaryCodingComment,
-            CheckCode::U010 => CheckKind::UnnecessaryFutureImport("...".to_string()),
+            CheckCode::U010 => CheckKind::UnnecessaryFutureImport(vec!["...".to_string()]),
            CheckCode::U011 => CheckKind::UnnecessaryLRUCacheParams,
+            CheckCode::U012 => CheckKind::UnnecessaryEncodeUTF8,
            // pydocstyle
            CheckCode::D100 => CheckKind::PublicModule,
            CheckCode::D101 => CheckKind::PublicClass,
@@ -731,6 +790,13 @@ impl CheckCode {
            CheckCode::N818 => CheckKind::ErrorSuffixOnExceptionName("...".to_string()),
            // isort
            CheckCode::I001 => CheckKind::UnsortedImports,
+            // flake8-bandit
+            CheckCode::S101 => CheckKind::AssertUsed,
+            CheckCode::S102 => CheckKind::ExecUsed,
+            CheckCode::S104 => CheckKind::HardcodedBindAllInterfaces,
+            CheckCode::S105 => CheckKind::HardcodedPasswordString("...".to_string()),
+            CheckCode::S106 => CheckKind::HardcodedPasswordFuncArg("...".to_string()),
+            CheckCode::S107 => CheckKind::HardcodedPasswordDefault("...".to_string()),
            // Ruff
            CheckCode::RUF001 => CheckKind::AmbiguousUnicodeCharacterString('𝐁', 'B'),
            CheckCode::RUF002 => CheckKind::AmbiguousUnicodeCharacterDocstring('𝐁', 'B'),
@@ -805,6 +871,7 @@ impl CheckCode {
            CheckCode::B016 => CheckCategory::Flake8Bugbear,
            CheckCode::B017 => CheckCategory::Flake8Bugbear,
            CheckCode::B018 => CheckCategory::Flake8Bugbear,
+            CheckCode::B019 => CheckCategory::Flake8Bugbear,
            CheckCode::B025 => CheckCategory::Flake8Bugbear,
            CheckCode::B026 => CheckCategory::Flake8Bugbear,
            CheckCode::C400 => CheckCategory::Flake8Comprehensions,
@@ -840,6 +907,16 @@ impl CheckCode {
            CheckCode::ANN205 => CheckCategory::Flake8Annotations,
            CheckCode::ANN206 => CheckCategory::Flake8Annotations,
            CheckCode::ANN401 => CheckCategory::Flake8Annotations,
+            CheckCode::YTT101 => CheckCategory::Flake82020,
+            CheckCode::YTT102 => CheckCategory::Flake82020,
+            CheckCode::YTT103 => CheckCategory::Flake82020,
+            CheckCode::YTT201 => CheckCategory::Flake82020,
+            CheckCode::YTT202 => CheckCategory::Flake82020,
+            CheckCode::YTT203 => CheckCategory::Flake82020,
+            CheckCode::YTT204 => CheckCategory::Flake82020,
+            CheckCode::YTT301 => CheckCategory::Flake82020,
+            CheckCode::YTT302 => CheckCategory::Flake82020,
+            CheckCode::YTT303 => CheckCategory::Flake82020,
            CheckCode::U001 => CheckCategory::Pyupgrade,
            CheckCode::U002 => CheckCategory::Pyupgrade,
            CheckCode::U003 => CheckCategory::Pyupgrade,
@@ -851,6 +928,7 @@ impl CheckCode {
            CheckCode::U009 => CheckCategory::Pyupgrade,
            CheckCode::U010 => CheckCategory::Pyupgrade,
            CheckCode::U011 => CheckCategory::Pyupgrade,
+            CheckCode::U012 => CheckCategory::Pyupgrade,
            CheckCode::D100 => CheckCategory::Pydocstyle,
            CheckCode::D101 => CheckCategory::Pydocstyle,
            CheckCode::D102 => CheckCategory::Pydocstyle,
@@ -911,6 +989,12 @@ impl CheckCode {
            CheckCode::N817 => CheckCategory::PEP8Naming,
            CheckCode::N818 => CheckCategory::PEP8Naming,
            CheckCode::I001 => CheckCategory::Isort,
+            CheckCode::S101 => CheckCategory::Flake8Bandit,
+            CheckCode::S102 => CheckCategory::Flake8Bandit,
+            CheckCode::S104 => CheckCategory::Flake8Bandit,
+            CheckCode::S105 => CheckCategory::Flake8Bandit,
+            CheckCode::S106 => CheckCategory::Flake8Bandit,
+            CheckCode::S107 => CheckCategory::Flake8Bandit,
            CheckCode::RUF001 => CheckCategory::Ruff,
            CheckCode::RUF002 => CheckCategory::Ruff,
            CheckCode::RUF003 => CheckCategory::Ruff,
@@ -990,6 +1074,7 @@ impl CheckKind {
            CheckKind::CannotRaiseLiteral => &CheckCode::B016,
            CheckKind::NoAssertRaisesException => &CheckCode::B017,
            CheckKind::UselessExpression => &CheckCode::B018,
+            CheckKind::CachedInstanceMethod => &CheckCode::B019,
            CheckKind::DuplicateTryBlockException(_) => &CheckCode::B025,
            CheckKind::StarArgUnpackingAfterKeywordArg => &CheckCode::B026,
            // flake8-comprehensions
@@ -1029,6 +1114,17 @@ impl CheckKind {
            CheckKind::MissingReturnTypeStaticMethod(_) => &CheckCode::ANN205,
            CheckKind::MissingReturnTypeClassMethod(_) => &CheckCode::ANN206,
            CheckKind::DynamicallyTypedExpression(_) => &CheckCode::ANN401,
+            // flake8-2020
+            CheckKind::SysVersionSlice3Referenced => &CheckCode::YTT101,
+            CheckKind::SysVersion2Referenced => &CheckCode::YTT102,
+            CheckKind::SysVersionCmpStr3 => &CheckCode::YTT103,
+            CheckKind::SysVersionInfo0Eq3Referenced => &CheckCode::YTT201,
+            CheckKind::SixPY3Referenced => &CheckCode::YTT202,
+            CheckKind::SysVersionInfo1CmpInt => &CheckCode::YTT203,
+            CheckKind::SysVersionInfoMinorCmpInt => &CheckCode::YTT204,
+            CheckKind::SysVersion0Referenced => &CheckCode::YTT301,
+            CheckKind::SysVersionCmpStr10 => &CheckCode::YTT302,
+            CheckKind::SysVersionSlice1Referenced => &CheckCode::YTT303,
            // pyupgrade
            CheckKind::TypeOfPrimitive(_) => &CheckCode::U003,
            CheckKind::UnnecessaryAbspath => &CheckCode::U002,
@@ -1041,6 +1137,7 @@ impl CheckKind {
            CheckKind::PEP3120UnnecessaryCodingComment => &CheckCode::U009,
            CheckKind::UnnecessaryFutureImport(_) => &CheckCode::U010,
            CheckKind::UnnecessaryLRUCacheParams => &CheckCode::U011,
+            CheckKind::UnnecessaryEncodeUTF8 => &CheckCode::U012,
            // pydocstyle
            CheckKind::BlankLineAfterLastSection(_) => &CheckCode::D413,
            CheckKind::BlankLineAfterSection(_) => &CheckCode::D410,
@@ -1104,6 +1201,13 @@ impl CheckKind {
            CheckKind::ErrorSuffixOnExceptionName(..) => &CheckCode::N818,
            // isort
            CheckKind::UnsortedImports => &CheckCode::I001,
+            // flake8-bandit
+            CheckKind::AssertUsed => &CheckCode::S101,
+            CheckKind::ExecUsed => &CheckCode::S102,
+            CheckKind::HardcodedBindAllInterfaces => &CheckCode::S104,
+            CheckKind::HardcodedPasswordString(..) => &CheckCode::S105,
+            CheckKind::HardcodedPasswordFuncArg(..) => &CheckCode::S106,
+            CheckKind::HardcodedPasswordDefault(..) => &CheckCode::S107,
            // Ruff
            CheckKind::AmbiguousUnicodeCharacterString(..) => &CheckCode::RUF001,
            CheckKind::AmbiguousUnicodeCharacterDocstring(..) => &CheckCode::RUF002,
@@ -1331,6 +1435,9 @@ impl CheckKind {
            CheckKind::UselessExpression => {
                "Found useless expression. Either assign it to a variable or remove it.".to_string()
            }
+            CheckKind::CachedInstanceMethod => "Use of `functools.lru_cache` or `functools.cache` \
+                                                on methods can lead to memory leaks."
+                .to_string(),
            CheckKind::DuplicateTryBlockException(name) => {
                format!("try-except block with duplicate exception `{name}`")
            }
@@ -1473,6 +1580,38 @@ impl CheckKind {
            CheckKind::DynamicallyTypedExpression(name) => {
                format!("Dynamically typed expressions (typing.Any) are disallowed in `{name}`")
            }
+            // flake8-2020
+            CheckKind::SysVersionSlice3Referenced => {
+                "`sys.version[:3]` referenced (python3.10), use `sys.version_info`".to_string()
+            }
+            CheckKind::SysVersion2Referenced => {
+                "`sys.version[2]` referenced (python3.10), use `sys.version_info`".to_string()
+            }
+            CheckKind::SysVersionCmpStr3 => {
+                "`sys.version` compared to string (python3.10), use `sys.version_info`".to_string()
+            }
+            CheckKind::SysVersionInfo0Eq3Referenced => {
+                "`sys.version_info[0] == 3` referenced (python4), use `>=`".to_string()
+            }
+            CheckKind::SixPY3Referenced => {
+                "`six.PY3` referenced (python4), use `not six.PY2`".to_string()
+            }
+            CheckKind::SysVersionInfo1CmpInt => "`sys.version_info[1]` compared to integer \
+                                                 (python4), compare `sys.version_info` to tuple"
+                .to_string(),
+            CheckKind::SysVersionInfoMinorCmpInt => "`sys.version_info.minor` compared to integer \
+                                                     (python4), compare `sys.version_info` to \
+                                                     tuple"
+                .to_string(),
+            CheckKind::SysVersion0Referenced => {
+                "`sys.version[0]` referenced (python10), use `sys.version_info`".to_string()
+            }
+            CheckKind::SysVersionCmpStr10 => {
+                "`sys.version` compared to string (python10), use `sys.version_info`".to_string()
+            }
+            CheckKind::SysVersionSlice1Referenced => {
+                "`sys.version[:1]` referenced (python10), use `sys.version_info`".to_string()
+            }
            // pyupgrade
            CheckKind::TypeOfPrimitive(primitive) => {
                format!("Use `{}` instead of `type(...)`", primitive.builtin())
@@ -1498,12 +1637,19 @@ impl CheckKind {
            CheckKind::SuperCallWithParameters => {
                "Use `super()` instead of `super(__class__, self)`".to_string()
            }
-            CheckKind::UnnecessaryFutureImport(name) => {
-                format!("Unnessary __future__ import `{name}` for target Python version")
+            CheckKind::UnnecessaryFutureImport(names) => {
+                if names.len() == 1 {
+                    let import = &names[0];
+                    format!("Unnecessary `__future__` import `{import}` for target Python version")
+                } else {
+                    let imports = names.iter().map(|name| format!("`{name}`")).join(", ");
+                    format!("Unnecessary `__future__` imports {imports} for target Python version")
+                }
            }
            CheckKind::UnnecessaryLRUCacheParams => {
-                "Unnessary parameters to functools.lru_cache".to_string()
+                "Unnecessary parameters to `functools.lru_cache`".to_string()
            }
+            CheckKind::UnnecessaryEncodeUTF8 => "Unnecessary call to `encode` as UTF-8".to_string(),
            // pydocstyle
            CheckKind::FitsOnOneLine => "One-line docstring should fit on one line".to_string(),
            CheckKind::BlankLineAfterSummary => {
@@ -1669,6 +1815,21 @@ impl CheckKind {
            }
            // isort
            CheckKind::UnsortedImports => "Import block is un-sorted or un-formatted".to_string(),
+            // flake8-bandit
+            CheckKind::AssertUsed => "Use of `assert` detected".to_string(),
+            CheckKind::ExecUsed => "Use of `exec` detected".to_string(),
+            CheckKind::HardcodedBindAllInterfaces => {
+                "Possible binding to all interfaces".to_string()
+            }
+            CheckKind::HardcodedPasswordString(string) => {
+                format!("Possible hardcoded password: `'{string}'`")
+            }
+            CheckKind::HardcodedPasswordFuncArg(string) => {
+                format!("Possible hardcoded password: `'{string}'`")
+            }
+            CheckKind::HardcodedPasswordDefault(string) => {
+                format!("Possible hardcoded password: `'{string}'`")
+            }
            // Ruff
            CheckKind::AmbiguousUnicodeCharacterString(confusable, representant) => {
                format!(
@@ -1770,6 +1931,8 @@ impl CheckKind {
                | CheckKind::UnnecessaryAbspath
                | CheckKind::UnnecessaryCollectionCall(_)
                | CheckKind::UnnecessaryComprehension(_)
+                | CheckKind::UnnecessaryEncodeUTF8
+                | CheckKind::UnnecessaryFutureImport(_)
                | CheckKind::UnnecessaryGeneratorDict
                | CheckKind::UnnecessaryGeneratorList
                | CheckKind::UnnecessaryGeneratorSet
--- a/src/checks_gen.rs
+++ b/src/checks_gen.rs
@@ -53,6 +53,7 @@ pub enum CheckCodePrefix {
    B016,
    B017,
    B018,
+    B019,
    B02,
    B025,
    B026,
@@ -244,6 +245,15 @@ pub enum CheckCodePrefix {
    RUF001,
    RUF002,
    RUF003,
+    S,
+    S1,
+    S10,
+    S101,
+    S102,
+    S104,
+    S105,
+    S106,
+    S107,
    T,
    T2,
    T20,
@@ -264,6 +274,7 @@ pub enum CheckCodePrefix {
    U01,
    U010,
    U011,
+    U012,
    W,
    W2,
    W29,
@@ -271,6 +282,23 @@ pub enum CheckCodePrefix {
    W6,
    W60,
    W605,
+    YTT,
+    YTT1,
+    YTT10,
+    YTT101,
+    YTT102,
+    YTT103,
+    YTT2,
+    YTT20,
+    YTT201,
+    YTT202,
+    YTT203,
+    YTT204,
+    YTT3,
+    YTT30,
+    YTT301,
+    YTT302,
+    YTT303,
 }

 #[derive(PartialEq, Eq, PartialOrd, Ord)]
@@ -351,6 +379,7 @@ impl CheckCodePrefix {
                CheckCode::B016,
                CheckCode::B017,
                CheckCode::B018,
+                CheckCode::B019,
                CheckCode::B025,
                CheckCode::B026,
            ],
@@ -371,6 +400,7 @@ impl CheckCodePrefix {
                CheckCode::B016,
                CheckCode::B017,
                CheckCode::B018,
+                CheckCode::B019,
                CheckCode::B025,
                CheckCode::B026,
            ],
@@ -401,6 +431,7 @@ impl CheckCodePrefix {
                CheckCode::B016,
                CheckCode::B017,
                CheckCode::B018,
+                CheckCode::B019,
            ],
            CheckCodePrefix::B010 => vec![CheckCode::B010],
            CheckCodePrefix::B011 => vec![CheckCode::B011],
@@ -410,6 +441,7 @@ impl CheckCodePrefix {
            CheckCodePrefix::B016 => vec![CheckCode::B016],
            CheckCodePrefix::B017 => vec![CheckCode::B017],
            CheckCodePrefix::B018 => vec![CheckCode::B018],
+            CheckCodePrefix::B019 => vec![CheckCode::B019],
            CheckCodePrefix::B02 => vec![CheckCode::B025, CheckCode::B026],
            CheckCodePrefix::B025 => vec![CheckCode::B025],
            CheckCodePrefix::B026 => vec![CheckCode::B026],
@@ -965,6 +997,36 @@ impl CheckCodePrefix {
            CheckCodePrefix::RUF001 => vec![CheckCode::RUF001],
            CheckCodePrefix::RUF002 => vec![CheckCode::RUF002],
            CheckCodePrefix::RUF003 => vec![CheckCode::RUF003],
+            CheckCodePrefix::S => vec![
+                CheckCode::S101,
+                CheckCode::S102,
+                CheckCode::S104,
+                CheckCode::S105,
+                CheckCode::S106,
+                CheckCode::S107,
+            ],
+            CheckCodePrefix::S1 => vec![
+                CheckCode::S101,
+                CheckCode::S102,
+                CheckCode::S104,
+                CheckCode::S105,
+                CheckCode::S106,
+                CheckCode::S107,
+            ],
+            CheckCodePrefix::S10 => vec![
+                CheckCode::S101,
+                CheckCode::S102,
+                CheckCode::S104,
+                CheckCode::S105,
+                CheckCode::S106,
+                CheckCode::S107,
+            ],
+            CheckCodePrefix::S101 => vec![CheckCode::S101],
+            CheckCodePrefix::S102 => vec![CheckCode::S102],
+            CheckCodePrefix::S104 => vec![CheckCode::S104],
+            CheckCodePrefix::S105 => vec![CheckCode::S105],
+            CheckCodePrefix::S106 => vec![CheckCode::S106],
+            CheckCodePrefix::S107 => vec![CheckCode::S107],
            CheckCodePrefix::T => vec![CheckCode::T201, CheckCode::T203],
            CheckCodePrefix::T2 => vec![CheckCode::T201, CheckCode::T203],
            CheckCodePrefix::T20 => vec![CheckCode::T201, CheckCode::T203],
@@ -982,6 +1044,7 @@ impl CheckCodePrefix {
                CheckCode::U009,
                CheckCode::U010,
                CheckCode::U011,
+                CheckCode::U012,
            ],
            CheckCodePrefix::U0 => vec![
                CheckCode::U001,
@@ -995,6 +1058,7 @@ impl CheckCodePrefix {
                CheckCode::U009,
                CheckCode::U010,
                CheckCode::U011,
+                CheckCode::U012,
            ],
            CheckCodePrefix::U00 => vec![
                CheckCode::U001,
@@ -1016,9 +1080,10 @@ impl CheckCodePrefix {
            CheckCodePrefix::U007 => vec![CheckCode::U007],
            CheckCodePrefix::U008 => vec![CheckCode::U008],
            CheckCodePrefix::U009 => vec![CheckCode::U009],
-            CheckCodePrefix::U01 => vec![CheckCode::U010, CheckCode::U011],
+            CheckCodePrefix::U01 => vec![CheckCode::U010, CheckCode::U011, CheckCode::U012],
            CheckCodePrefix::U010 => vec![CheckCode::U010],
            CheckCodePrefix::U011 => vec![CheckCode::U011],
+            CheckCodePrefix::U012 => vec![CheckCode::U012],
            CheckCodePrefix::W => vec![CheckCode::W292, CheckCode::W605],
            CheckCodePrefix::W2 => vec![CheckCode::W292],
            CheckCodePrefix::W29 => vec![CheckCode::W292],
@@ -1026,6 +1091,44 @@ impl CheckCodePrefix {
            CheckCodePrefix::W6 => vec![CheckCode::W605],
            CheckCodePrefix::W60 => vec![CheckCode::W605],
            CheckCodePrefix::W605 => vec![CheckCode::W605],
+            CheckCodePrefix::YTT => vec![
+                CheckCode::YTT101,
+                CheckCode::YTT102,
+                CheckCode::YTT103,
+                CheckCode::YTT201,
+                CheckCode::YTT202,
+                CheckCode::YTT203,
+                CheckCode::YTT204,
+                CheckCode::YTT301,
+                CheckCode::YTT302,
+                CheckCode::YTT303,
+            ],
+            CheckCodePrefix::YTT1 => vec![CheckCode::YTT101, CheckCode::YTT102, CheckCode::YTT103],
+            CheckCodePrefix::YTT10 => vec![CheckCode::YTT101, CheckCode::YTT102, CheckCode::YTT103],
+            CheckCodePrefix::YTT101 => vec![CheckCode::YTT101],
+            CheckCodePrefix::YTT102 => vec![CheckCode::YTT102],
+            CheckCodePrefix::YTT103 => vec![CheckCode::YTT103],
+            CheckCodePrefix::YTT2 => vec![
+                CheckCode::YTT201,
+                CheckCode::YTT202,
+                CheckCode::YTT203,
+                CheckCode::YTT204,
+            ],
+            CheckCodePrefix::YTT20 => vec![
+                CheckCode::YTT201,
+                CheckCode::YTT202,
+                CheckCode::YTT203,
+                CheckCode::YTT204,
+            ],
+            CheckCodePrefix::YTT201 => vec![CheckCode::YTT201],
+            CheckCodePrefix::YTT202 => vec![CheckCode::YTT202],
+            CheckCodePrefix::YTT203 => vec![CheckCode::YTT203],
+            CheckCodePrefix::YTT204 => vec![CheckCode::YTT204],
+            CheckCodePrefix::YTT3 => vec![CheckCode::YTT301, CheckCode::YTT302, CheckCode::YTT303],
+            CheckCodePrefix::YTT30 => vec![CheckCode::YTT301, CheckCode::YTT302, CheckCode::YTT303],
+            CheckCodePrefix::YTT301 => vec![CheckCode::YTT301],
+            CheckCodePrefix::YTT302 => vec![CheckCode::YTT302],
+            CheckCodePrefix::YTT303 => vec![CheckCode::YTT303],
        }
    }
 }
@@ -1079,6 +1182,7 @@ impl CheckCodePrefix {
            CheckCodePrefix::B016 => PrefixSpecificity::Explicit,
            CheckCodePrefix::B017 => PrefixSpecificity::Explicit,
            CheckCodePrefix::B018 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::B019 => PrefixSpecificity::Explicit,
            CheckCodePrefix::B02 => PrefixSpecificity::Tens,
            CheckCodePrefix::B025 => PrefixSpecificity::Explicit,
            CheckCodePrefix::B026 => PrefixSpecificity::Explicit,
@@ -1234,6 +1338,15 @@ impl CheckCodePrefix {
            CheckCodePrefix::I0 => PrefixSpecificity::Hundreds,
            CheckCodePrefix::I00 => PrefixSpecificity::Tens,
            CheckCodePrefix::I001 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::S => PrefixSpecificity::Category,
+            CheckCodePrefix::S1 => PrefixSpecificity::Hundreds,
+            CheckCodePrefix::S10 => PrefixSpecificity::Tens,
+            CheckCodePrefix::S101 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::S102 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::S104 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::S105 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::S106 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::S107 => PrefixSpecificity::Explicit,
            CheckCodePrefix::M => PrefixSpecificity::Category,
            CheckCodePrefix::M0 => PrefixSpecificity::Hundreds,
            CheckCodePrefix::M00 => PrefixSpecificity::Tens,
@@ -1290,6 +1403,7 @@ impl CheckCodePrefix {
            CheckCodePrefix::U01 => PrefixSpecificity::Tens,
            CheckCodePrefix::U010 => PrefixSpecificity::Explicit,
            CheckCodePrefix::U011 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::U012 => PrefixSpecificity::Explicit,
            CheckCodePrefix::W => PrefixSpecificity::Category,
            CheckCodePrefix::W2 => PrefixSpecificity::Hundreds,
            CheckCodePrefix::W29 => PrefixSpecificity::Tens,
@@ -1297,6 +1411,23 @@ impl CheckCodePrefix {
            CheckCodePrefix::W6 => PrefixSpecificity::Hundreds,
            CheckCodePrefix::W60 => PrefixSpecificity::Tens,
            CheckCodePrefix::W605 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::YTT => PrefixSpecificity::Category,
+            CheckCodePrefix::YTT1 => PrefixSpecificity::Hundreds,
+            CheckCodePrefix::YTT10 => PrefixSpecificity::Tens,
+            CheckCodePrefix::YTT101 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::YTT102 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::YTT103 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::YTT2 => PrefixSpecificity::Hundreds,
+            CheckCodePrefix::YTT20 => PrefixSpecificity::Tens,
+            CheckCodePrefix::YTT201 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::YTT202 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::YTT203 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::YTT204 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::YTT3 => PrefixSpecificity::Hundreds,
+            CheckCodePrefix::YTT30 => PrefixSpecificity::Tens,
+            CheckCodePrefix::YTT301 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::YTT302 => PrefixSpecificity::Explicit,
+            CheckCodePrefix::YTT303 => PrefixSpecificity::Explicit,
        }
    }
 }
--- a/src/flake8_2020/mod.rs
+++ b/src/flake8_2020/mod.rs
@@ -0,0 +1 @@
+pub mod plugins;
--- a/src/flake8_2020/plugins.rs
+++ b/src/flake8_2020/plugins.rs
@@ -0,0 +1,192 @@
+use num_bigint::BigInt;
+use rustpython_ast::{Cmpop, Constant, Expr, ExprKind, Located};
+
+use crate::ast::helpers::match_name_or_attr_from_module;
+use crate::ast::types::Range;
+use crate::check_ast::Checker;
+use crate::checks::{Check, CheckCode, CheckKind};
+
+fn is_sys(checker: &Checker, expr: &Expr, target: &str) -> bool {
+    match_name_or_attr_from_module(expr, target, "sys", checker.from_imports.get("sys"))
+}
+
+/// YTT101, YTT102, YTT301, YTT303
+pub fn subscript(checker: &mut Checker, value: &Expr, slice: &Expr) {
+    if is_sys(checker, value, "version") {
+        match &slice.node {
+            ExprKind::Slice {
+                lower: None,
+                upper: Some(upper),
+                step: None,
+                ..
+            } => {
+                if let ExprKind::Constant {
+                    value: Constant::Int(i),
+                    ..
+                } = &upper.node
+                {
+                    if *i == BigInt::from(1)
+                        && checker.settings.enabled.contains(&CheckCode::YTT303)
+                    {
+                        checker.add_check(Check::new(
+                            CheckKind::SysVersionSlice1Referenced,
+                            Range::from_located(value),
+                        ));
+                    } else if *i == BigInt::from(3)
+                        && checker.settings.enabled.contains(&CheckCode::YTT101)
+                    {
+                        checker.add_check(Check::new(
+                            CheckKind::SysVersionSlice3Referenced,
+                            Range::from_located(value),
+                        ));
+                    }
+                }
+            }
+
+            ExprKind::Constant {
+                value: Constant::Int(i),
+                ..
+            } => {
+                if *i == BigInt::from(2) && checker.settings.enabled.contains(&CheckCode::YTT102) {
+                    checker.add_check(Check::new(
+                        CheckKind::SysVersion2Referenced,
+                        Range::from_located(value),
+                    ));
+                } else if *i == BigInt::from(0)
+                    && checker.settings.enabled.contains(&CheckCode::YTT301)
+                {
+                    checker.add_check(Check::new(
+                        CheckKind::SysVersion0Referenced,
+                        Range::from_located(value),
+                    ));
+                }
+            }
+
+            _ => {}
+        }
+    }
+}
+
+/// YTT103, YTT201, YTT203, YTT204, YTT302
+pub fn compare(checker: &mut Checker, left: &Expr, ops: &[Cmpop], comparators: &[Expr]) {
+    match &left.node {
+        ExprKind::Subscript { value, slice, .. } if is_sys(checker, value, "version_info") => {
+            if let ExprKind::Constant {
+                value: Constant::Int(i),
+                ..
+            } = &slice.node
+            {
+                if *i == BigInt::from(0) {
+                    if let (
+                        [Cmpop::Eq | Cmpop::NotEq],
+                        [Located {
+                            node:
+                                ExprKind::Constant {
+                                    value: Constant::Int(n),
+                                    ..
+                                },
+                            ..
+                        }],
+                    ) = (ops, comparators)
+                    {
+                        if *n == BigInt::from(3)
+                            && checker.settings.enabled.contains(&CheckCode::YTT201)
+                        {
+                            checker.add_check(Check::new(
+                                CheckKind::SysVersionInfo0Eq3Referenced,
+                                Range::from_located(left),
+                            ));
+                        }
+                    }
+                } else if *i == BigInt::from(1) {
+                    if let (
+                        [Cmpop::Lt | Cmpop::LtE | Cmpop::Gt | Cmpop::GtE],
+                        [Located {
+                            node:
+                                ExprKind::Constant {
+                                    value: Constant::Int(_),
+                                    ..
+                                },
+                            ..
+                        }],
+                    ) = (ops, comparators)
+                    {
+                        if checker.settings.enabled.contains(&CheckCode::YTT203) {
+                            checker.add_check(Check::new(
+                                CheckKind::SysVersionInfo1CmpInt,
+                                Range::from_located(left),
+                            ));
+                        }
+                    }
+                }
+            }
+        }
+
+        ExprKind::Attribute { value, attr, .. }
+            if is_sys(checker, value, "version_info") && attr == "minor" =>
+        {
+            if let (
+                [Cmpop::Lt | Cmpop::LtE | Cmpop::Gt | Cmpop::GtE],
+                [Located {
+                    node:
+                        ExprKind::Constant {
+                            value: Constant::Int(_),
+                            ..
+                        },
+                    ..
+                }],
+            ) = (ops, comparators)
+            {
+                if checker.settings.enabled.contains(&CheckCode::YTT204) {
+                    checker.add_check(Check::new(
+                        CheckKind::SysVersionInfoMinorCmpInt,
+                        Range::from_located(left),
+                    ));
+                }
+            }
+        }
+
+        _ => {}
+    }
+
+    if is_sys(checker, left, "version") {
+        if let (
+            [Cmpop::Lt | Cmpop::LtE | Cmpop::Gt | Cmpop::GtE],
+            [Located {
+                node:
+                    ExprKind::Constant {
+                        value: Constant::Str(s),
+                        ..
+                    },
+                ..
+            }],
+        ) = (ops, comparators)
+        {
+            if s.len() == 1 {
+                if checker.settings.enabled.contains(&CheckCode::YTT302) {
+                    checker.add_check(Check::new(
+                        CheckKind::SysVersionCmpStr10,
+                        Range::from_located(left),
+                    ));
+                }
+            } else if checker.settings.enabled.contains(&CheckCode::YTT103) {
+                checker.add_check(Check::new(
+                    CheckKind::SysVersionCmpStr3,
+                    Range::from_located(left),
+                ));
+            }
+        }
+    }
+}
+
+/// YTT202
+pub fn name_or_attribute(checker: &mut Checker, expr: &Expr) {
+    if match_name_or_attr_from_module(expr, "PY3", "six", checker.from_imports.get("six"))
+        && checker.settings.enabled.contains(&CheckCode::YTT202)
+    {
+        checker.add_check(Check::new(
+            CheckKind::SixPY3Referenced,
+            Range::from_located(expr),
+        ));
+    }
+}
--- a/src/flake8_bandit/helpers.rs
+++ b/src/flake8_bandit/helpers.rs
@@ -0,0 +1,22 @@
+use rustpython_ast::{Constant, Expr, ExprKind};
+
+const PASSWORD_NAMES: [&str; 7] = [
+    "password", "pass", "passwd", "pwd", "secret", "token", "secrete",
+];
+
+pub fn string_literal(expr: &Expr) -> Option<&str> {
+    match &expr.node {
+        ExprKind::Constant {
+            value: Constant::Str(string),
+            ..
+        } => Some(string),
+        _ => None,
+    }
+}
+
+// Maybe use regex for this?
+pub fn matches_password_name(string: &str) -> bool {
+    PASSWORD_NAMES
+        .iter()
+        .any(|name| string.to_lowercase().contains(name))
+}
--- a/src/flake8_bandit/mod.rs
+++ b/src/flake8_bandit/mod.rs
@@ -0,0 +1,2 @@
+mod helpers;
+pub mod plugins;
--- a/src/flake8_bandit/plugins/assert_used.rs
+++ b/src/flake8_bandit/plugins/assert_used.rs
@@ -0,0 +1,9 @@
+use rustpython_ast::{Located, StmtKind};
+
+use crate::ast::types::Range;
+use crate::checks::{Check, CheckKind};
+
+/// S101
+pub fn assert_used(stmt: &Located<StmtKind>) -> Check {
+    Check::new(CheckKind::AssertUsed, Range::from_located(stmt))
+}
--- a/src/flake8_bandit/plugins/exec_used.rs
+++ b/src/flake8_bandit/plugins/exec_used.rs
@@ -0,0 +1,14 @@
+use rustpython_ast::{Expr, ExprKind};
+
+use crate::ast::types::Range;
+use crate::checks::{Check, CheckKind};
+
+/// S102
+pub fn exec_used(expr: &Expr, func: &Expr) -> Option<Check> {
+    if let ExprKind::Name { id, .. } = &func.node {
+        if id == "exec" {
+            return Some(Check::new(CheckKind::ExecUsed, Range::from_located(expr)));
+        }
+    }
+    None
+}
--- a/src/flake8_bandit/plugins/hardcoded_bind_all_interfaces.rs
+++ b/src/flake8_bandit/plugins/hardcoded_bind_all_interfaces.rs
@@ -0,0 +1,11 @@
+use crate::ast::types::Range;
+use crate::checks::{Check, CheckKind};
+
+/// S104
+pub fn hardcoded_bind_all_interfaces(value: &str, range: &Range) -> Option<Check> {
+    if value == "0.0.0.0" {
+        Some(Check::new(CheckKind::HardcodedBindAllInterfaces, *range))
+    } else {
+        None
+    }
+}
--- a/src/flake8_bandit/plugins/hardcoded_password_default.rs
+++ b/src/flake8_bandit/plugins/hardcoded_password_default.rs
@@ -0,0 +1,51 @@
+use rustpython_ast::{ArgData, Arguments, Expr, Located};
+
+use crate::ast::types::Range;
+use crate::checks::{Check, CheckKind};
+use crate::flake8_bandit::helpers::{matches_password_name, string_literal};
+
+fn check_password_kwarg(arg: &Located<ArgData>, default: &Expr) -> Option<Check> {
+    if let Some(string) = string_literal(default) {
+        let kwarg_name = &arg.node.arg;
+        if matches_password_name(kwarg_name) {
+            return Some(Check::new(
+                CheckKind::HardcodedPasswordDefault(string.to_string()),
+                Range::from_located(default),
+            ));
+        }
+    }
+    None
+}
+
+/// S107
+pub fn hardcoded_password_default(arguments: &Arguments) -> Vec<Check> {
+    let mut checks: Vec<Check> = Vec::new();
+
+    let defaults_start =
+        arguments.posonlyargs.len() + arguments.args.len() - arguments.defaults.len();
+    for (i, arg) in arguments
+        .posonlyargs
+        .iter()
+        .chain(&arguments.args)
+        .enumerate()
+    {
+        if let Some(i) = i.checked_sub(defaults_start) {
+            let default = &arguments.defaults[i];
+            if let Some(check) = check_password_kwarg(arg, default) {
+                checks.push(check);
+            }
+        }
+    }
+
+    let defaults_start = arguments.kwonlyargs.len() - arguments.kw_defaults.len();
+    for (i, kwarg) in arguments.kwonlyargs.iter().enumerate() {
+        if let Some(i) = i.checked_sub(defaults_start) {
+            let default = &arguments.kw_defaults[i];
+            if let Some(check) = check_password_kwarg(kwarg, default) {
+                checks.push(check);
+            }
+        }
+    }
+
+    checks
+}
--- a/src/flake8_bandit/plugins/hardcoded_password_func_arg.rs
+++ b/src/flake8_bandit/plugins/hardcoded_password_func_arg.rs
@@ -0,0 +1,25 @@
+use rustpython_ast::Keyword;
+
+use crate::ast::types::Range;
+use crate::checks::{Check, CheckKind};
+use crate::flake8_bandit::helpers::{matches_password_name, string_literal};
+
+/// S106
+pub fn hardcoded_password_func_arg(keywords: &[Keyword]) -> Vec<Check> {
+    keywords
+        .iter()
+        .filter_map(|keyword| {
+            if let Some(string) = string_literal(&keyword.node.value) {
+                if let Some(arg) = &keyword.node.arg {
+                    if matches_password_name(arg) {
+                        return Some(Check::new(
+                            CheckKind::HardcodedPasswordFuncArg(string.to_string()),
+                            Range::from_located(keyword),
+                        ));
+                    }
+                }
+            }
+            None
+        })
+        .collect()
+}
--- a/src/flake8_bandit/plugins/hardcoded_password_string.rs
+++ b/src/flake8_bandit/plugins/hardcoded_password_string.rs
@@ -0,0 +1,58 @@
+use rustpython_ast::{Constant, Expr, ExprKind};
+
+use crate::ast::types::Range;
+use crate::checks::{Check, CheckKind};
+use crate::flake8_bandit::helpers::{matches_password_name, string_literal};
+
+fn is_password_target(target: &Expr) -> bool {
+    let target_name = match &target.node {
+        // variable = "s3cr3t"
+        ExprKind::Name { id, .. } => id,
+        // d["password"] = "s3cr3t"
+        ExprKind::Subscript { slice, .. } => match &slice.node {
+            ExprKind::Constant {
+                value: Constant::Str(string),
+                ..
+            } => string,
+            _ => return false,
+        },
+        // obj.password = "s3cr3t"
+        ExprKind::Attribute { attr, .. } => attr,
+        _ => return false,
+    };
+
+    matches_password_name(target_name)
+}
+
+/// S105
+pub fn compare_to_hardcoded_password_string(left: &Expr, comparators: &[Expr]) -> Vec<Check> {
+    comparators
+        .iter()
+        .filter_map(|comp| {
+            if let Some(string) = string_literal(comp) {
+                if is_password_target(left) {
+                    return Some(Check::new(
+                        CheckKind::HardcodedPasswordString(string.to_string()),
+                        Range::from_located(comp),
+                    ));
+                }
+            }
+            None
+        })
+        .collect()
+}
+
+/// S105
+pub fn assign_hardcoded_password_string(value: &Expr, targets: &Vec<Expr>) -> Option<Check> {
+    if let Some(string) = string_literal(value) {
+        for target in targets {
+            if is_password_target(target) {
+                return Some(Check::new(
+                    CheckKind::HardcodedPasswordString(string.to_string()),
+                    Range::from_located(value),
+                ));
+            }
+        }
+    }
+    None
+}
--- a/src/flake8_bandit/plugins/mod.rs
+++ b/src/flake8_bandit/plugins/mod.rs
@@ -0,0 +1,15 @@
+pub use assert_used::assert_used;
+pub use exec_used::exec_used;
+pub use hardcoded_bind_all_interfaces::hardcoded_bind_all_interfaces;
+pub use hardcoded_password_default::hardcoded_password_default;
+pub use hardcoded_password_func_arg::hardcoded_password_func_arg;
+pub use hardcoded_password_string::{
+    assign_hardcoded_password_string, compare_to_hardcoded_password_string,
+};
+
+mod assert_used;
+mod exec_used;
+mod hardcoded_bind_all_interfaces;
+mod hardcoded_password_default;
+mod hardcoded_password_func_arg;
+mod hardcoded_password_string;
--- a/src/flake8_bugbear/mod.rs
+++ b/src/flake8_bugbear/mod.rs
@@ -1,2 +1,36 @@
 mod constants;
 pub mod plugins;
+pub mod settings;
+
+#[cfg(test)]
+mod tests {
+    use std::path::Path;
+
+    use anyhow::Result;
+
+    use crate::autofix::fixer;
+    use crate::checks::CheckCode;
+    use crate::linter::test_path;
+    use crate::{flake8_bugbear, Settings};
+
+    #[test]
+    fn extend_immutable_calls() -> Result<()> {
+        let snapshot = "extend_immutable_calls".to_string();
+        let mut checks = test_path(
+            Path::new("./resources/test/fixtures/B008_extended.py"),
+            &Settings {
+                flake8_bugbear: flake8_bugbear::settings::Settings {
+                    extend_immutable_calls: vec![
+                        "fastapi.Depends".to_string(),
+                        "fastapi.Query".to_string(),
+                    ],
+                },
+                ..Settings::for_rules(vec![CheckCode::B008])
+            },
+            &fixer::Mode::Generate,
+        )?;
+        checks.sort_by_key(|check| check.location);
+        insta::assert_yaml_snapshot!(snapshot, checks);
+        Ok(())
+    }
+}
--- a/src/flake8_bugbear/plugins/cached_instance_method.rs
+++ b/src/flake8_bugbear/plugins/cached_instance_method.rs
@@ -0,0 +1,49 @@
+use rustpython_ast::{Expr, ExprKind};
+
+use crate::ast::helpers::{compose_call_path, match_name_or_attr_from_module};
+use crate::ast::types::{Range, ScopeKind};
+use crate::check_ast::Checker;
+use crate::checks::{Check, CheckKind};
+
+fn is_cache_func(checker: &Checker, expr: &Expr) -> bool {
+    match_name_or_attr_from_module(
+        expr,
+        "lru_cache",
+        "functools",
+        checker.from_imports.get("functools"),
+    ) || match_name_or_attr_from_module(
+        expr,
+        "cache",
+        "functools",
+        checker.from_imports.get("functools"),
+    )
+}
+
+/// B019
+pub fn cached_instance_method(checker: &mut Checker, decorator_list: &[Expr]) {
+    if matches!(checker.current_scope().kind, ScopeKind::Class(_)) {
+        for decorator in decorator_list {
+            // TODO(charlie): This should take into account `classmethod-decorators` and
+            // `staticmethod-decorators`.
+            if let Some(decorator_path) = compose_call_path(decorator) {
+                if decorator_path == "classmethod" || decorator_path == "staticmethod" {
+                    return;
+                }
+            }
+        }
+        for decorator in decorator_list {
+            if is_cache_func(
+                checker,
+                match &decorator.node {
+                    ExprKind::Call { func, .. } => func,
+                    _ => decorator,
+                },
+            ) {
+                checker.add_check(Check::new(
+                    CheckKind::CachedInstanceMethod,
+                    Range::from_located(decorator),
+                ));
+            }
+        }
+    }
+}
--- a/src/flake8_bugbear/plugins/function_call_argument_default.rs
+++ b/src/flake8_bugbear/plugins/function_call_argument_default.rs
@@ -1,3 +1,4 @@
+use fnv::{FnvHashMap, FnvHashSet};
 use rustpython_ast::{Arguments, Constant, Expr, ExprKind};

 use crate::ast::helpers::compose_call_path;
@@ -8,37 +9,69 @@ use crate::check_ast::Checker;
 use crate::checks::{Check, CheckKind};
 use crate::flake8_bugbear::plugins::mutable_argument_default::is_mutable_func;

-const IMMUTABLE_FUNCS: [&str; 11] = [
+const IMMUTABLE_FUNCS: [&str; 7] = [
    "tuple",
    "frozenset",
    "operator.attrgetter",
    "operator.itemgetter",
    "operator.methodcaller",
-    "attrgetter",
-    "itemgetter",
-    "methodcaller",
    "types.MappingProxyType",
-    "MappingProxyType",
    "re.compile",
 ];

-fn is_immutable_func(expr: &Expr) -> bool {
-    compose_call_path(expr).map_or_else(|| false, |func| IMMUTABLE_FUNCS.contains(&func.as_str()))
+fn is_immutable_func(
+    expr: &Expr,
+    extend_immutable_calls: &[&str],
+    from_imports: &FnvHashMap<&str, FnvHashSet<&str>>,
+) -> bool {
+    compose_call_path(expr).map_or_else(
+        || false,
+        |call_path| {
+            // It matches the call path exactly (`operator.methodcaller`).
+            for target in IMMUTABLE_FUNCS.iter().chain(extend_immutable_calls) {
+                if &call_path == target {
+                    return true;
+                }
+            }
+
+            // It matches the member name, and was imported from that module (`methodcaller`
+            // following `from operator import methodcaller`).
+            if !call_path.contains('.') {
+                for target in IMMUTABLE_FUNCS.iter().chain(extend_immutable_calls) {
+                    let mut splitter = target.rsplit('.');
+                    if let (Some(member), Some(module)) = (splitter.next(), splitter.next()) {
+                        if call_path == member
+                            && from_imports
+                                .get(module)
+                                .map(|module| module.contains(member))
+                                .unwrap_or(false)
+                        {
+                            return true;
+                        }
+                    }
+                }
+            }
+
+            false
+        },
+    )
 }

-struct ArgumentDefaultVisitor {
+struct ArgumentDefaultVisitor<'a> {
    checks: Vec<(CheckKind, Range)>,
+    extend_immutable_calls: &'a [&'a str],
+    from_imports: &'a FnvHashMap<&'a str, FnvHashSet<&'a str>>,
 }

-impl<'a, 'b> Visitor<'b> for ArgumentDefaultVisitor
+impl<'a, 'b> Visitor<'b> for ArgumentDefaultVisitor<'b>
 where
    'b: 'a,
 {
-    fn visit_expr(&mut self, expr: &'a Expr) {
+    fn visit_expr(&mut self, expr: &'b Expr) {
        match &expr.node {
            ExprKind::Call { func, args, .. } => {
-                if !is_mutable_func(func)
-                    && !is_immutable_func(func)
+                if !is_mutable_func(func, self.from_imports)
+                    && !is_immutable_func(func, self.extend_immutable_calls, self.from_imports)
                    && !is_nan_or_infinity(func, args)
                {
                    self.checks.push((
@@ -82,7 +115,18 @@ fn is_nan_or_infinity(expr: &Expr, args: &[Expr]) -> bool {

 /// B008
 pub fn function_call_argument_default(checker: &mut Checker, arguments: &Arguments) {
-    let mut visitor = ArgumentDefaultVisitor { checks: vec![] };
+    let extend_immutable_cells: Vec<&str> = checker
+        .settings
+        .flake8_bugbear
+        .extend_immutable_calls
+        .iter()
+        .map(|s| s.as_str())
+        .collect();
+    let mut visitor = ArgumentDefaultVisitor {
+        checks: vec![],
+        extend_immutable_calls: &extend_immutable_cells,
+        from_imports: &checker.from_imports,
+    };
    for expr in arguments
        .defaults
        .iter()
--- a/src/flake8_bugbear/plugins/mod.rs
+++ b/src/flake8_bugbear/plugins/mod.rs
@@ -1,6 +1,7 @@
 pub use assert_false::assert_false;
 pub use assert_raises_exception::assert_raises_exception;
 pub use assignment_to_os_environ::assignment_to_os_environ;
+pub use cached_instance_method::cached_instance_method;
 pub use cannot_raise_literal::cannot_raise_literal;
 pub use duplicate_exceptions::{duplicate_exceptions, duplicate_handler_exceptions};
 pub use function_call_argument_default::function_call_argument_default;
@@ -19,6 +20,7 @@ pub use useless_expression::useless_expression;
 mod assert_false;
 mod assert_raises_exception;
 mod assignment_to_os_environ;
+mod cached_instance_method;
 mod cannot_raise_literal;
 mod duplicate_exceptions;
 mod function_call_argument_default;
--- a/src/flake8_bugbear/plugins/mutable_argument_default.rs
+++ b/src/flake8_bugbear/plugins/mutable_argument_default.rs
@@ -1,32 +1,53 @@
+use fnv::{FnvHashMap, FnvHashSet};
 use rustpython_ast::{Arguments, Expr, ExprKind};

+use crate::ast::helpers::compose_call_path;
 use crate::ast::types::Range;
 use crate::check_ast::Checker;
 use crate::checks::{Check, CheckKind};

-pub fn is_mutable_func(expr: &Expr) -> bool {
-    match &expr.node {
-        ExprKind::Name { id, .. }
-            if id == "dict"
-                || id == "list"
-                || id == "set"
-                || id == "Counter"
-                || id == "OrderedDict"
-                || id == "defaultdict"
-                || id == "deque" =>
-        {
-            true
-        }
-        ExprKind::Attribute { value, attr, .. }
-            if (attr == "Counter"
-                || attr == "OrderedDict"
-                || attr == "defaultdict"
-                || attr == "deque") =>
-        {
-            matches!(&value.node, ExprKind::Name { id, .. } if id == "collections")
-        }
-        _ => false,
-    }
+const MUTABLE_FUNCS: [&str; 7] = [
+    "dict",
+    "list",
+    "set",
+    "collections.Counter",
+    "collections.OrderedDict",
+    "collections.defaultdict",
+    "collections.deque",
+];
+
+pub fn is_mutable_func(expr: &Expr, from_imports: &FnvHashMap<&str, FnvHashSet<&str>>) -> bool {
+    compose_call_path(expr).map_or_else(
+        || false,
+        |call_path| {
+            // It matches the call path exactly (`collections.Counter`).
+            for target in MUTABLE_FUNCS {
+                if call_path == target {
+                    return true;
+                }
+            }
+
+            // It matches the member name, and was imported from that module (`Counter`
+            // following `from collections import Counter`).
+            if !call_path.contains('.') {
+                for target in MUTABLE_FUNCS {
+                    let mut splitter = target.rsplit('.');
+                    if let (Some(member), Some(module)) = (splitter.next(), splitter.next()) {
+                        if call_path == member
+                            && from_imports
+                                .get(module)
+                                .map(|module| module.contains(member))
+                                .unwrap_or(false)
+                        {
+                            return true;
+                        }
+                    }
+                }
+            }
+
+            false
+        },
+    )
 }

 /// B006
@@ -49,7 +70,7 @@ pub fn mutable_argument_default(checker: &mut Checker, arguments: &Arguments) {
                ));
            }
            ExprKind::Call { func, .. } => {
-                if is_mutable_func(func) {
+                if is_mutable_func(func, &checker.from_imports) {
                    checker.add_check(Check::new(
                        CheckKind::MutableArgumentDefault,
                        Range::from_located(expr),
--- a/src/flake8_bugbear/plugins/unused_loop_control_variable.rs
+++ b/src/flake8_bugbear/plugins/unused_loop_control_variable.rs
@@ -1,5 +1,4 @@
-use std::collections::BTreeMap;
-
+use fnv::FnvHashMap;
 use rustpython_ast::{Expr, ExprKind, Stmt};

 use crate::ast::types::Range;
@@ -12,7 +11,7 @@ use crate::checks::{Check, CheckKind};
 /// Identify all `ExprKind::Name` nodes in an AST.
 struct NameFinder<'a> {
    /// A map from identifier to defining expression.
-    names: BTreeMap<&'a str, &'a Expr>,
+    names: FnvHashMap<&'a str, &'a Expr>,
 }

 impl NameFinder<'_> {
--- a/src/flake8_bugbear/settings.rs
+++ b/src/flake8_bugbear/settings.rs
@@ -0,0 +1,22 @@
+//! Settings for the `pep8-naming` plugin.
+
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, PartialEq, Eq, Serialize, Deserialize, Default)]
+#[serde(deny_unknown_fields, rename_all = "kebab-case")]
+pub struct Options {
+    pub extend_immutable_calls: Option<Vec<String>>,
+}
+
+#[derive(Debug, Hash, Default)]
+pub struct Settings {
+    pub extend_immutable_calls: Vec<String>,
+}
+
+impl Settings {
+    pub fn from_options(options: Options) -> Self {
+        Self {
+            extend_immutable_calls: options.extend_immutable_calls.unwrap_or_default(),
+        }
+    }
+}
--- a/src/flake8_bugbear/snapshots/ruff__flake8_bugbeartestsextend_immutable_calls.snap
+++ b/src/flake8_bugbear/snapshots/ruff__flake8_bugbeartestsextend_immutable_calls.snap
@@ -0,0 +1,13 @@
+---
+source: src/flake8_bugbear/mod.rs
+expression: checks
+---
+- kind: FunctionCallArgumentDefault
+  location:
+    row: 19
+    column: 50
+  end_location:
+    row: 19
+    column: 63
+  fix: ~
+
--- a/src/flake8_print/plugins/print_call.rs
+++ b/src/flake8_print/plugins/print_call.rs
@@ -7,6 +7,7 @@ use crate::check_ast::Checker;
 use crate::checks::CheckCode;
 use crate::flake8_print::checks;

+/// T201, T203
 pub fn print_call(checker: &mut Checker, expr: &Expr, func: &Expr) {
    if let Some(mut check) = checks::print_call(
        expr,
@@ -26,7 +27,6 @@ pub fn print_call(checker: &mut Checker, expr: &Expr, func: &Expr) {
                    .iter()
                    .map(|index| checker.parents[*index])
                    .collect();
-
                match helpers::remove_stmt(
                    checker.parents[context.defined_by],
                    context.defined_in.map(|index| checker.parents[index]),
@@ -38,7 +38,7 @@ pub fn print_call(checker: &mut Checker, expr: &Expr, func: &Expr) {
                        }
                        check.amend(fix)
                    }
-                    Err(e) => error!("Failed to fix unused imports: {}", e),
+                    Err(e) => error!("Failed to remove print call: {}", e),
                }
            }
        }
--- a/src/isort/categorize.rs
+++ b/src/isort/categorize.rs
@@ -12,16 +12,20 @@ pub enum ImportType {
    StandardLibrary,
    ThirdParty,
    FirstParty,
+    LocalFolder,
 }

 pub fn categorize(
    module_base: &str,
+    level: &Option<usize>,
    src: &[PathBuf],
    known_first_party: &BTreeSet<String>,
    known_third_party: &BTreeSet<String>,
    extra_standard_library: &BTreeSet<String>,
 ) -> ImportType {
-    if known_first_party.contains(module_base) {
+    if level.map(|level| level > 0).unwrap_or(false) {
+        ImportType::LocalFolder
+    } else if known_first_party.contains(module_base) {
        ImportType::FirstParty
    } else if known_third_party.contains(module_base) {
        ImportType::ThirdParty
@@ -31,21 +35,16 @@ pub fn categorize(
        import_type.clone()
    } else if KNOWN_STANDARD_LIBRARY.contains(module_base) {
        ImportType::StandardLibrary
+    } else if find_local(src, module_base) {
+        ImportType::FirstParty
    } else {
-        if find_local(src, module_base) {
-            ImportType::FirstParty
-        } else {
-            ImportType::ThirdParty
-        }
+        ImportType::ThirdParty
    }
 }

 static STATIC_CLASSIFICATIONS: Lazy<BTreeMap<&'static str, ImportType>> = Lazy::new(|| {
    BTreeMap::from([
        ("__future__", ImportType::Future),
-        ("__main__", ImportType::FirstParty),
-        // Force `disutils` to be considered third-party.
-        ("disutils", ImportType::ThirdParty),
        // Relative imports (e.g., `from . import module`).
        ("", ImportType::FirstParty),
    ])
--- a/src/isort/mod.rs
+++ b/src/isort/mod.rs
@@ -1,15 +1,18 @@
 use std::collections::{BTreeMap, BTreeSet};
 use std::path::PathBuf;

+use itertools::Itertools;
 use ropey::RopeBuilder;
 use rustpython_ast::{Stmt, StmtKind};

 use crate::isort::categorize::{categorize, ImportType};
-use crate::isort::types::{AliasData, ImportBlock, ImportFromData, Importable};
+use crate::isort::sorting::{member_key, module_key};
+use crate::isort::types::{AliasData, ImportBlock, ImportFromData, Importable, OrderedImportBlock};

 mod categorize;
 pub mod plugins;
 pub mod settings;
+mod sorting;
 pub mod track;
 mod types;

@@ -62,6 +65,7 @@ fn categorize_imports<'a>(
    for alias in block.import {
        let import_type = categorize(
            &alias.module_base(),
+            &None,
            src,
            known_first_party,
            known_third_party,
@@ -77,6 +81,7 @@ fn categorize_imports<'a>(
    for (import_from, aliases) in block.import_from {
        let classification = categorize(
            &import_from.module_base(),
+            import_from.level,
            src,
            known_first_party,
            known_third_party,
@@ -91,7 +96,37 @@ fn categorize_imports<'a>(
    block_by_type
 }

-pub fn sort_imports(
+fn sort_imports(block: ImportBlock) -> OrderedImportBlock {
+    let mut ordered: OrderedImportBlock = Default::default();
+    // Sort `StmtKind::Import`.
+    for import in block
+        .import
+        .into_iter()
+        .sorted_by_cached_key(|alias| module_key(alias.name))
+    {
+        ordered.import.push(import);
+    }
+    // Sort `StmtKind::ImportFrom`.
+    for (import_from, aliases) in
+        block
+            .import_from
+            .into_iter()
+            .sorted_by_cached_key(|(import_from, _)| {
+                import_from.module.as_ref().map(|module| module_key(module))
+            })
+    {
+        ordered.import_from.push((
+            import_from,
+            aliases
+                .into_iter()
+                .sorted_by_cached_key(|alias| member_key(alias.name))
+                .collect(),
+        ));
+    }
+    ordered
+}
+
+pub fn format_imports(
    block: Vec<&Stmt>,
    line_length: &usize,
    src: &[PathBuf],
@@ -114,45 +149,41 @@ pub fn sort_imports(
    // Generate replacement source code.
    let mut output = RopeBuilder::new();
    let mut first_block = true;
-    for import_type in [
-        ImportType::Future,
-        ImportType::StandardLibrary,
-        ImportType::ThirdParty,
-        ImportType::FirstParty,
-    ] {
-        if let Some(import_block) = block_by_type.get(&import_type) {
-            // Add a blank line between every section.
-            if !first_block {
-                output.append("\n");
+    for import_block in block_by_type.into_values() {
+        let import_block = sort_imports(import_block);
+
+        // Add a blank line between every section.
+        if !first_block {
+            output.append("\n");
+        } else {
+            first_block = false;
+        }
+
+        // Format `StmtKind::Import` statements.
+        for AliasData { name, asname } in import_block.import.iter() {
+            if let Some(asname) = asname {
+                output.append(&format!("import {} as {}\n", name, asname));
            } else {
-                first_block = false;
+                output.append(&format!("import {}\n", name));
            }
+        }

-            // Format `StmtKind::Import` statements.
-            for AliasData { name, asname } in import_block.import.iter() {
-                if let Some(asname) = asname {
-                    output.append(&format!("import {} as {}\n", name, asname));
-                } else {
-                    output.append(&format!("import {}\n", name));
-                }
-            }
+        // Format `StmtKind::ImportFrom` statements.
+        for (import_from, aliases) in import_block.import_from.iter() {
+            let prelude: String = format!("from {} import ", import_from.module_name());
+            let members: Vec<String> = aliases
+                .iter()
+                .map(|AliasData { name, asname }| {
+                    if let Some(asname) = asname {
+                        format!("{} as {}", name, asname)
+                    } else {
+                        name.to_string()
+                    }
+                })
+                .collect();

-            // Format `StmtKind::ImportFrom` statements.
-            for (import_from, aliases) in import_block.import_from.iter() {
-                let prelude: String = format!("from {} import ", import_from.module_name());
-                let members: Vec<String> = aliases
-                    .iter()
-                    .map(|AliasData { name, asname }| {
-                        if let Some(asname) = asname {
-                            format!("{} as {}", name, asname)
-                        } else {
-                            name.to_string()
-                        }
-                    })
-                    .collect();
-
-                // Can we fit the import on a single line?
-                let expected_len: usize =
+            // Can we fit the import on a single line?
+            let expected_len: usize =
                    // `from base import `
                    prelude.len()
                        // `member( as alias)?`
@@ -160,36 +191,35 @@ pub fn sort_imports(
                        // `, `
                        + 2 * (members.len() - 1);

-                if expected_len <= *line_length {
-                    // `from base import `
-                    output.append(&prelude);
-                    // `member( as alias)?(, )?`
-                    for (index, part) in members.into_iter().enumerate() {
-                        if index > 0 {
-                            output.append(", ");
-                        }
-                        output.append(&part);
+            if expected_len <= *line_length {
+                // `from base import `
+                output.append(&prelude);
+                // `member( as alias)?(, )?`
+                for (index, part) in members.into_iter().enumerate() {
+                    if index > 0 {
+                        output.append(", ");
                    }
-                    // `\n`
-                    output.append("\n");
-                } else {
-                    // `from base import (\n`
-                    output.append(&prelude);
-                    output.append("(");
-                    output.append("\n");
+                    output.append(&part);
+                }
+                // `\n`
+                output.append("\n");
+            } else {
+                // `from base import (\n`
+                output.append(&prelude);
+                output.append("(");
+                output.append("\n");

-                    // `    member( as alias)?,\n`
-                    for part in members {
-                        output.append(INDENT);
-                        output.append(&part);
-                        output.append(",");
-                        output.append("\n");
-                    }
-
-                    // `)\n`
-                    output.append(")");
+                // `    member( as alias)?,\n`
+                for part in members {
+                    output.append(INDENT);
+                    output.append(&part);
+                    output.append(",");
                    output.append("\n");
                }
+
+                // `)\n`
+                output.append(")");
+                output.append("\n");
            }
        }
    }
@@ -214,10 +244,12 @@ mod tests {
    #[test_case(Path::new("import_from_after_import.py"))]
    #[test_case(Path::new("leading_prefix.py"))]
    #[test_case(Path::new("no_reorder_within_section.py"))]
+    #[test_case(Path::new("order_by_type.py"))]
    #[test_case(Path::new("preserve_indentation.py"))]
    #[test_case(Path::new("reorder_within_section.py"))]
    #[test_case(Path::new("separate_first_party_imports.py"))]
    #[test_case(Path::new("separate_future_imports.py"))]
+    #[test_case(Path::new("separate_local_folder_imports.py"))]
    #[test_case(Path::new("separate_third_party_imports.py"))]
    #[test_case(Path::new("skip.py"))]
    #[test_case(Path::new("trailing_suffix.py"))]
--- a/src/isort/plugins.rs
+++ b/src/isort/plugins.rs
@@ -5,7 +5,7 @@ use crate::ast::types::Range;
 use crate::autofix::{fixer, Fix};
 use crate::checks::CheckKind;
 use crate::docstrings::helpers::leading_space;
-use crate::isort::sort_imports;
+use crate::isort::format_imports;
 use crate::{Check, Settings, SourceCodeLocator};

 fn extract_range(body: &[&Stmt]) -> Range {
@@ -62,9 +62,9 @@ pub fn check_imports(
    let has_trailing_content = match_trailing_content(&body, locator);

    // Generate the sorted import block.
-    let expected = sort_imports(
+    let expected = format_imports(
        body,
-        &settings.line_length,
+        &(settings.line_length - indentation.len()),
        &settings.src,
        &settings.isort.known_first_party,
        &settings.isort.known_third_party,
--- a/src/isort/snapshots/ruffisorttests__fit_line_length.py.snap
+++ b/src/isort/snapshots/ruffisorttests__fit_line_length.py.snap
@@ -2,5 +2,21 @@
 source: src/isort/mod.rs
 expression: checks
 ---
-[]
+- kind: UnsortedImports
+  location:
+    row: 7
+    column: 0
+  end_location:
+    row: 15
+    column: 0
+  fix:
+    patch:
+      content: "    from line_with_88 import aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\n    from line_with_89 import (\n        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n    )\n    from line_with_90 import (\n        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n    )\n    from line_with_91 import (\n        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n    )\n    from line_with_92 import (\n        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n    )\n    from line_with_93 import (\n        aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n    )\n"
+      location:
+        row: 7
+        column: 0
+      end_location:
+        row: 15
+        column: 0
+    applied: false

--- a/src/isort/snapshots/ruffisorttests__order_by_type.py.snap
+++ b/src/isort/snapshots/ruffisorttests__order_by_type.py.snap
@@ -0,0 +1,22 @@
+---
+source: src/isort/mod.rs
+expression: checks
+---
+- kind: UnsortedImports
+  location:
+    row: 1
+    column: 0
+  end_location:
+    row: 13
+    column: 0
+  fix:
+    patch:
+      content: "import glob\nimport os\nimport shutil\nimport tempfile\nimport time\nfrom subprocess import PIPE, STDOUT, Popen\n\nimport BAR\nimport bar\nimport FOO\nimport foo\nimport StringIO\nfrom module import BASIC, CONSTANT, Apple, Class, function\n"
+      location:
+        row: 1
+        column: 0
+      end_location:
+        row: 13
+        column: 0
+    applied: false
+
--- a/src/isort/snapshots/ruffisorttests__separate_local_folder_imports.py.snap
+++ b/src/isort/snapshots/ruffisorttests__separate_local_folder_imports.py.snap
@@ -0,0 +1,22 @@
+---
+source: src/isort/mod.rs
+expression: checks
+---
+- kind: UnsortedImports
+  location:
+    row: 1
+    column: 0
+  end_location:
+    row: 5
+    column: 0
+  fix:
+    patch:
+      content: "import os\nimport sys\n\nimport leading_prefix\n\nfrom . import leading_prefix\n"
+      location:
+        row: 1
+        column: 0
+      end_location:
+        row: 5
+        column: 0
+    applied: false
+
--- a/src/isort/sorting.rs
+++ b/src/isort/sorting.rs
@@ -0,0 +1,34 @@
+/// See: https://github.com/PyCQA/isort/blob/12cc5fbd67eebf92eb2213b03c07b138ae1fb448/isort/sorting.py#L13
+use crate::python::string;
+
+#[derive(PartialOrd, Ord, PartialEq, Eq)]
+pub enum Prefix {
+    Constants,
+    Classes,
+    Variables,
+}
+
+pub fn module_key(module_name: &str) -> String {
+    module_name.to_lowercase()
+}
+
+pub fn member_key(member_name: &str) -> (Prefix, String) {
+    (
+        if member_name.len() > 1 && string::is_upper(member_name) {
+            // Ex) `CONSTANT`
+            Prefix::Constants
+        } else if member_name
+            .chars()
+            .next()
+            .map(|char| char.is_uppercase())
+            .unwrap_or(false)
+        {
+            // Ex) `Class`
+            Prefix::Classes
+        } else {
+            // Ex) `variable`
+            Prefix::Variables
+        },
+        member_name.to_lowercase(),
+    )
+}
--- a/src/isort/types.rs
+++ b/src/isort/types.rs
@@ -53,3 +53,11 @@ pub struct ImportBlock<'a> {
    // Set of (name, asname).
    pub import: BTreeSet<AliasData<'a>>,
 }
+
+#[derive(Debug, Default)]
+pub struct OrderedImportBlock<'a> {
+    // Map from (module, level) to `AliasData`.
+    pub import_from: Vec<(ImportFromData<'a>, Vec<AliasData<'a>>)>,
+    // Set of (name, asname).
+    pub import: Vec<AliasData<'a>>,
+}
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -27,8 +27,10 @@ pub mod code_gen;
 mod cst;
 mod directives;
 mod docstrings;
+mod flake8_2020;
 pub mod flake8_annotations;
-mod flake8_bugbear;
+pub mod flake8_bandit;
+pub mod flake8_bugbear;
 mod flake8_builtins;
 mod flake8_comprehensions;
 mod flake8_print;
--- a/src/linter.rs
+++ b/src/linter.rs
@@ -342,6 +342,7 @@ mod tests {
    #[test_case(CheckCode::B016, Path::new("B016.py"); "B016")]
    #[test_case(CheckCode::B017, Path::new("B017.py"); "B017")]
    #[test_case(CheckCode::B018, Path::new("B018.py"); "B018")]
+    #[test_case(CheckCode::B019, Path::new("B019.py"); "B019")]
    #[test_case(CheckCode::B025, Path::new("B025.py"); "B025")]
    #[test_case(CheckCode::B026, Path::new("B026.py"); "B026")]
    #[test_case(CheckCode::C400, Path::new("C400.py"); "C400")]
@@ -468,6 +469,12 @@ mod tests {
    #[test_case(CheckCode::N816, Path::new("N816.py"); "N816")]
    #[test_case(CheckCode::N817, Path::new("N817.py"); "N817")]
    #[test_case(CheckCode::N818, Path::new("N818.py"); "N818")]
+    #[test_case(CheckCode::S101, Path::new("S101.py"); "S101")]
+    #[test_case(CheckCode::S102, Path::new("S102.py"); "S102")]
+    #[test_case(CheckCode::S104, Path::new("S104.py"); "S104")]
+    #[test_case(CheckCode::S105, Path::new("S105.py"); "S105")]
+    #[test_case(CheckCode::S106, Path::new("S106.py"); "S106")]
+    #[test_case(CheckCode::S107, Path::new("S107.py"); "S107")]
    #[test_case(CheckCode::T201, Path::new("T201.py"); "T201")]
    #[test_case(CheckCode::T203, Path::new("T203.py"); "T203")]
    #[test_case(CheckCode::U001, Path::new("U001.py"); "U001")]
@@ -485,6 +492,7 @@ mod tests {
    #[test_case(CheckCode::U010, Path::new("U010.py"); "U010")]
    #[test_case(CheckCode::U011, Path::new("U011_0.py"); "U011_0")]
    #[test_case(CheckCode::U011, Path::new("U011_1.py"); "U011_1")]
+    #[test_case(CheckCode::U012, Path::new("U012.py"); "U012")]
    #[test_case(CheckCode::W292, Path::new("W292_0.py"); "W292_0")]
    #[test_case(CheckCode::W292, Path::new("W292_1.py"); "W292_1")]
    #[test_case(CheckCode::W292, Path::new("W292_2.py"); "W292_2")]
@@ -493,6 +501,16 @@ mod tests {
    #[test_case(CheckCode::RUF001, Path::new("RUF001.py"); "RUF001")]
    #[test_case(CheckCode::RUF002, Path::new("RUF002.py"); "RUF002")]
    #[test_case(CheckCode::RUF003, Path::new("RUF003.py"); "RUF003")]
+    #[test_case(CheckCode::YTT101, Path::new("YTT101.py"); "YTT101")]
+    #[test_case(CheckCode::YTT102, Path::new("YTT102.py"); "YTT102")]
+    #[test_case(CheckCode::YTT103, Path::new("YTT103.py"); "YTT103")]
+    #[test_case(CheckCode::YTT201, Path::new("YTT201.py"); "YTT201")]
+    #[test_case(CheckCode::YTT202, Path::new("YTT202.py"); "YTT202")]
+    #[test_case(CheckCode::YTT203, Path::new("YTT203.py"); "YTT203")]
+    #[test_case(CheckCode::YTT204, Path::new("YTT204.py"); "YTT204")]
+    #[test_case(CheckCode::YTT301, Path::new("YTT301.py"); "YTT301")]
+    #[test_case(CheckCode::YTT302, Path::new("YTT302.py"); "YTT302")]
+    #[test_case(CheckCode::YTT303, Path::new("YTT303.py"); "YTT303")]
    fn checks(check_code: CheckCode, path: &Path) -> Result<()> {
        let snapshot = format!("{}_{}", check_code.as_ref(), path.to_string_lossy());
        let mut checks = test_path(
--- a/src/pep8_naming/checks.rs
+++ b/src/pep8_naming/checks.rs
@@ -5,6 +5,7 @@ use crate::checks::{Check, CheckKind};
 use crate::pep8_naming::helpers;
 use crate::pep8_naming::helpers::FunctionType;
 use crate::pep8_naming::settings::Settings;
+use crate::python::string;

 /// N801
 pub fn invalid_class_name(class_def: &Stmt, name: &str) -> Option<Check> {
@@ -133,7 +134,7 @@ pub fn constant_imported_as_non_constant(
    name: &str,
    asname: &str,
 ) -> Option<Check> {
-    if helpers::is_upper(name) && !helpers::is_upper(asname) {
+    if string::is_upper(name) && !string::is_upper(asname) {
        return Some(Check::new(
            CheckKind::ConstantImportedAsNonConstant(name.to_string(), asname.to_string()),
            Range::from_located(import_from),
@@ -148,7 +149,7 @@ pub fn lowercase_imported_as_non_lowercase(
    name: &str,
    asname: &str,
 ) -> Option<Check> {
-    if !helpers::is_upper(name) && helpers::is_lower(name) && asname.to_lowercase() != asname {
+    if !string::is_upper(name) && string::is_lower(name) && asname.to_lowercase() != asname {
        return Some(Check::new(
            CheckKind::LowercaseImportedAsNonLowercase(name.to_string(), asname.to_string()),
            Range::from_located(import_from),
@@ -163,7 +164,7 @@ pub fn camelcase_imported_as_lowercase(
    name: &str,
    asname: &str,
 ) -> Option<Check> {
-    if helpers::is_camelcase(name) && helpers::is_lower(asname) {
+    if helpers::is_camelcase(name) && string::is_lower(asname) {
        return Some(Check::new(
            CheckKind::CamelcaseImportedAsLowercase(name.to_string(), asname.to_string()),
            Range::from_located(import_from),
@@ -179,8 +180,8 @@ pub fn camelcase_imported_as_constant(
    asname: &str,
 ) -> Option<Check> {
    if helpers::is_camelcase(name)
-        && !helpers::is_lower(asname)
-        && helpers::is_upper(asname)
+        && !string::is_lower(asname)
+        && string::is_upper(asname)
        && !helpers::is_acronym(name, asname)
    {
        return Some(Check::new(
@@ -230,8 +231,8 @@ pub fn camelcase_imported_as_acronym(
    asname: &str,
 ) -> Option<Check> {
    if helpers::is_camelcase(name)
-        && !helpers::is_lower(asname)
-        && helpers::is_upper(asname)
+        && !string::is_lower(asname)
+        && string::is_upper(asname)
        && helpers::is_acronym(name, asname)
    {
        return Some(Check::new(
--- a/src/pep8_naming/helpers.rs
+++ b/src/pep8_naming/helpers.rs
@@ -4,6 +4,7 @@ use rustpython_ast::{Expr, ExprKind};
 use crate::ast::helpers::match_name_or_attr;
 use crate::ast::types::{Scope, ScopeKind};
 use crate::pep8_naming::settings::Settings;
+use crate::python::string::{is_lower, is_upper};

 const CLASS_METHODS: [&str; 3] = ["__new__", "__init_subclass__", "__class_getitem__"];
 const METACLASS_BASES: [&str; 2] = ["type", "ABCMeta"];
@@ -59,30 +60,6 @@ pub fn function_type(
    }
 }

-pub fn is_lower(s: &str) -> bool {
-    let mut cased = false;
-    for c in s.chars() {
-        if c.is_uppercase() {
-            return false;
-        } else if !cased && c.is_lowercase() {
-            cased = true;
-        }
-    }
-    cased
-}
-
-pub fn is_upper(s: &str) -> bool {
-    let mut cased = false;
-    for c in s.chars() {
-        if c.is_lowercase() {
-            return false;
-        } else if !cased && c.is_uppercase() {
-            cased = true;
-        }
-    }
-    cased
-}
-
 pub fn is_camelcase(name: &str) -> bool {
    !is_lower(name) && !is_upper(name) && !name.contains('_')
 }
@@ -103,31 +80,7 @@ pub fn is_acronym(name: &str, asname: &str) -> bool {

 #[cfg(test)]
 mod tests {
-    use crate::pep8_naming::helpers::{
-        is_acronym, is_camelcase, is_lower, is_mixed_case, is_upper,
-    };
-
-    #[test]
-    fn test_is_lower() -> () {
-        assert!(is_lower("abc"));
-        assert!(is_lower("a_b_c"));
-        assert!(is_lower("a2c"));
-        assert!(!is_lower("aBc"));
-        assert!(!is_lower("ABC"));
-        assert!(!is_lower(""));
-        assert!(!is_lower("_"));
-    }
-
-    #[test]
-    fn test_is_upper() -> () {
-        assert!(is_upper("ABC"));
-        assert!(is_upper("A_B_C"));
-        assert!(is_upper("A2C"));
-        assert!(!is_upper("aBc"));
-        assert!(!is_upper("abc"));
-        assert!(!is_upper(""));
-        assert!(!is_upper("_"));
-    }
+    use crate::pep8_naming::helpers::{is_acronym, is_camelcase, is_mixed_case};

    #[test]
    fn test_is_camelcase() -> () {
--- a/src/python/mod.rs
+++ b/src/python/mod.rs
@@ -1,5 +1,6 @@
 pub mod builtins;
 pub mod future;
 pub mod keyword;
+pub mod string;
 pub mod sys;
 pub mod typing;
--- a/src/python/string.rs
+++ b/src/python/string.rs
@@ -0,0 +1,50 @@
+pub fn is_lower(s: &str) -> bool {
+    let mut cased = false;
+    for c in s.chars() {
+        if c.is_uppercase() {
+            return false;
+        } else if !cased && c.is_lowercase() {
+            cased = true;
+        }
+    }
+    cased
+}
+
+pub fn is_upper(s: &str) -> bool {
+    let mut cased = false;
+    for c in s.chars() {
+        if c.is_lowercase() {
+            return false;
+        } else if !cased && c.is_uppercase() {
+            cased = true;
+        }
+    }
+    cased
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::python::string::{is_lower, is_upper};
+
+    #[test]
+    fn test_is_lower() -> () {
+        assert!(is_lower("abc"));
+        assert!(is_lower("a_b_c"));
+        assert!(is_lower("a2c"));
+        assert!(!is_lower("aBc"));
+        assert!(!is_lower("ABC"));
+        assert!(!is_lower(""));
+        assert!(!is_lower("_"));
+    }
+
+    #[test]
+    fn test_is_upper() -> () {
+        assert!(is_upper("ABC"));
+        assert!(is_upper("A_B_C"));
+        assert!(is_upper("A2C"));
+        assert!(!is_upper("aBc"));
+        assert!(!is_upper("abc"));
+        assert!(!is_upper(""));
+        assert!(!is_upper("_"));
+    }
+}
--- a/src/python/typing.rs
+++ b/src/python/typing.rs
@@ -1,11 +1,10 @@
-use std::collections::{BTreeMap, BTreeSet};
-
+use fnv::{FnvHashMap, FnvHashSet};
 use once_cell::sync::Lazy;
 use rustpython_ast::{Expr, ExprKind};

 // See: https://pypi.org/project/typing-extensions/
-static TYPING_EXTENSIONS: Lazy<BTreeSet<&'static str>> = Lazy::new(|| {
-    BTreeSet::from([
+static TYPING_EXTENSIONS: Lazy<FnvHashSet<&'static str>> = Lazy::new(|| {
+    FnvHashSet::from_iter([
        "Annotated",
        "Any",
        "AsyncContextManager",
@@ -64,9 +63,9 @@ pub fn in_extensions(name: &str) -> bool {
 }

 // See: https://docs.python.org/3/library/typing.html
-static IMPORTED_SUBSCRIPTS: Lazy<BTreeMap<&'static str, BTreeSet<&'static str>>> =
+static IMPORTED_SUBSCRIPTS: Lazy<FnvHashMap<&'static str, FnvHashSet<&'static str>>> =
    Lazy::new(|| {
-        let mut import_map = BTreeMap::new();
+        let mut import_map = FnvHashMap::default();
        for (name, module) in [
            // `collections`
            ("ChainMap", "collections"),
@@ -183,7 +182,7 @@ static IMPORTED_SUBSCRIPTS: Lazy<BTreeMap<&'static str, BTreeSet<&'static str>>>
        ] {
            import_map
                .entry(name)
-                .or_insert_with(BTreeSet::new)
+                .or_insert_with(FnvHashSet::default)
                .insert(module);
        }
        import_map
@@ -191,13 +190,13 @@ static IMPORTED_SUBSCRIPTS: Lazy<BTreeMap<&'static str, BTreeSet<&'static str>>>

 // These are all assumed to come from the `typing` module.
 // See: https://peps.python.org/pep-0585/
-static PEP_585_BUILTINS_ELIGIBLE: Lazy<BTreeSet<&'static str>> =
-    Lazy::new(|| BTreeSet::from(["Dict", "FrozenSet", "List", "Set", "Tuple", "Type"]));
+static PEP_585_BUILTINS_ELIGIBLE: Lazy<FnvHashSet<&'static str>> =
+    Lazy::new(|| FnvHashSet::from_iter(["Dict", "FrozenSet", "List", "Set", "Tuple", "Type"]));

 // These are all assumed to come from the `typing` module.
 // See: https://peps.python.org/pep-0585/
-static PEP_585_BUILTINS: Lazy<BTreeSet<&'static str>> =
-    Lazy::new(|| BTreeSet::from(["dict", "frozenset", "list", "set", "tuple", "type"]));
+static PEP_585_BUILTINS: Lazy<FnvHashSet<&'static str>> =
+    Lazy::new(|| FnvHashSet::from_iter(["dict", "frozenset", "list", "set", "tuple", "type"]));

 fn is_pep593_annotated_subscript(name: &str) -> bool {
    name == "Annotated"
@@ -210,7 +209,7 @@ pub enum SubscriptKind {

 pub fn match_annotated_subscript(
    expr: &Expr,
-    imports: &BTreeMap<&str, BTreeSet<&str>>,
+    imports: &FnvHashMap<&str, FnvHashSet<&str>>,
 ) -> Option<SubscriptKind> {
    match &expr.node {
        ExprKind::Attribute { attr, value, .. } => {
@@ -261,7 +260,7 @@ pub fn match_annotated_subscript(
 /// Returns `true` if `Expr` represents a reference to a typing object with a
 /// PEP 585 built-in. Note that none of the PEP 585 built-ins are in
 /// `typing_extensions`.
-pub fn is_pep585_builtin(expr: &Expr, typing_imports: Option<&BTreeSet<&str>>) -> bool {
+pub fn is_pep585_builtin(expr: &Expr, typing_imports: Option<&FnvHashSet<&str>>) -> bool {
    match &expr.node {
        ExprKind::Attribute { attr, value, .. } => {
            if let ExprKind::Name { id, .. } = &value.node {
--- a/src/pyupgrade/checks.rs
+++ b/src/pyupgrade/checks.rs
@@ -1,5 +1,4 @@
-use std::collections::BTreeSet;
-
+use fnv::FnvHashSet;
 use rustpython_ast::{Constant, KeywordData};
 use rustpython_parser::ast::{ArgData, Expr, ExprKind, Stmt, StmtKind};

@@ -9,29 +8,6 @@ use crate::checks::{Check, CheckKind};
 use crate::pyupgrade::types::Primitive;
 use crate::settings::types::PythonVersion;

-pub const PY33_PLUS_REMOVE_FUTURES: &[&str] = &[
-    "nested_scopes",
-    "generators",
-    "with_statement",
-    "division",
-    "absolute_import",
-    "with_statement",
-    "print_function",
-    "unicode_literals",
-];
-
-pub const PY37_PLUS_REMOVE_FUTURES: &[&str] = &[
-    "nested_scopes",
-    "generators",
-    "with_statement",
-    "division",
-    "absolute_import",
-    "with_statement",
-    "print_function",
-    "unicode_literals",
-    "generator_stop",
-];
-
 /// U008
 pub fn super_args(
    scope: &Scope,
@@ -183,28 +159,11 @@ pub fn type_of_primitive(func: &Expr, args: &[Expr], location: Range) -> Option<
    None
 }

-/// U010
-pub fn unnecessary_future_import(
-    version: PythonVersion,
-    name: &str,
-    location: Range,
-) -> Option<Check> {
-    if (version >= PythonVersion::Py33 && PY33_PLUS_REMOVE_FUTURES.contains(&name))
-        || (version >= PythonVersion::Py37 && PY37_PLUS_REMOVE_FUTURES.contains(&name))
-    {
-        return Some(Check::new(
-            CheckKind::UnnecessaryFutureImport(name.to_string()),
-            location,
-        ));
-    }
-    None
-}
-
 /// U011
 pub fn unnecessary_lru_cache_params(
    decorator_list: &[Expr],
    target_version: PythonVersion,
-    imports: Option<&BTreeSet<&str>>,
+    imports: Option<&FnvHashSet<&str>>,
 ) -> Option<Check> {
    for expr in decorator_list.iter() {
        if let ExprKind::Call {
--- a/src/pyupgrade/fixes.rs
+++ b/src/pyupgrade/fixes.rs
@@ -1,11 +1,13 @@
-use libcst_native::{Codegen, Expression, SmallStatement, Statement};
-use rustpython_ast::{Expr, Keyword, Location};
+use anyhow::Result;
+use libcst_native::{Codegen, Expression, ImportNames, SmallStatement, Statement};
+use rustpython_ast::{Expr, Keyword, Location, Stmt};
 use rustpython_parser::lexer;
 use rustpython_parser::lexer::Tok;

 use crate::ast::helpers;
 use crate::ast::types::Range;
-use crate::autofix::Fix;
+use crate::autofix::{self, Fix};
+use crate::cst::matchers::match_module;
 use crate::source_code_locator::SourceCodeLocator;

 /// Generate a fix to remove a base from a ClassDef statement.
@@ -41,7 +43,7 @@ pub fn remove_class_def_base(
        }

        return match (fix_start, fix_end) {
-            (Some(start), Some(end)) => Some(Fix::replacement("".to_string(), start, end)),
+            (Some(start), Some(end)) => Some(Fix::deletion(start, end)),
            _ => None,
        };
    }
@@ -133,6 +135,63 @@ pub fn remove_super_arguments(locator: &SourceCodeLocator, expr: &Expr) -> Optio
    None
 }

+/// U010
+pub fn remove_unnecessary_future_import(
+    locator: &SourceCodeLocator,
+    removable: &[usize],
+    stmt: &Stmt,
+    parent: Option<&Stmt>,
+    deleted: &[&Stmt],
+) -> Result<Fix> {
+    // TODO(charlie): DRY up with pyflakes::fixes::remove_unused_import_froms.
+    let module_text = locator.slice_source_code_range(&Range::from_located(stmt));
+    let mut tree = match_module(&module_text)?;
+
+    let body = if let Some(Statement::Simple(body)) = tree.body.first_mut() {
+        body
+    } else {
+        return Err(anyhow::anyhow!("Expected node to be: Statement::Simple"));
+    };
+    let body = if let Some(SmallStatement::ImportFrom(body)) = body.body.first_mut() {
+        body
+    } else {
+        return Err(anyhow::anyhow!(
+            "Expected node to be: SmallStatement::ImportFrom"
+        ));
+    };
+
+    let aliases = if let ImportNames::Aliases(aliases) = &mut body.names {
+        aliases
+    } else {
+        return Err(anyhow::anyhow!("Expected node to be: Aliases"));
+    };
+
+    // Preserve the trailing comma (or not) from the last entry.
+    let trailing_comma = aliases.last().and_then(|alias| alias.comma.clone());
+
+    // TODO(charlie): This is quadratic.
+    for index in removable.iter().rev() {
+        aliases.remove(*index);
+    }
+
+    if let Some(alias) = aliases.last_mut() {
+        alias.comma = trailing_comma;
+    }
+
+    if aliases.is_empty() {
+        autofix::helpers::remove_stmt(stmt, parent, deleted)
+    } else {
+        let mut state = Default::default();
+        tree.codegen(&mut state);
+
+        Ok(Fix::replacement(
+            state.to_string(),
+            stmt.location,
+            stmt.end_location.unwrap(),
+        ))
+    }
+}
+
 /// U011
 pub fn remove_unnecessary_lru_cache_params(
    locator: &SourceCodeLocator,
--- a/src/pyupgrade/plugins/deprecated_unittest_alias.rs
+++ b/src/pyupgrade/plugins/deprecated_unittest_alias.rs
@@ -1,5 +1,4 @@
-use std::collections::BTreeMap;
-
+use fnv::FnvHashMap;
 use once_cell::sync::Lazy;
 use rustpython_ast::{Expr, ExprKind};

@@ -8,8 +7,8 @@ use crate::autofix::Fix;
 use crate::check_ast::Checker;
 use crate::checks::{Check, CheckKind};

-static DEPRECATED_ALIASES: Lazy<BTreeMap<&'static str, &'static str>> = Lazy::new(|| {
-    BTreeMap::from([
+static DEPRECATED_ALIASES: Lazy<FnvHashMap<&'static str, &'static str>> = Lazy::new(|| {
+    FnvHashMap::from_iter([
        ("failUnlessEqual", "assertEqual"),
        ("assertEquals", "assertEqual"),
        ("failIfEqual", "assertNotEqual"),
@@ -28,6 +27,7 @@ static DEPRECATED_ALIASES: Lazy<BTreeMap<&'static str, &'static str>> = Lazy::ne
    ])
 });

+/// U005
 pub fn deprecated_unittest_alias(checker: &mut Checker, expr: &Expr) {
    if let ExprKind::Attribute { value, attr, .. } = &expr.node {
        if let Some(target) = DEPRECATED_ALIASES.get(attr.as_str()) {
--- a/src/pyupgrade/plugins/mod.rs
+++ b/src/pyupgrade/plugins/mod.rs
@@ -2,6 +2,7 @@ pub use deprecated_unittest_alias::deprecated_unittest_alias;
 pub use super_call_with_parameters::super_call_with_parameters;
 pub use type_of_primitive::type_of_primitive;
 pub use unnecessary_abspath::unnecessary_abspath;
+pub use unnecessary_encode_utf8::unnecessary_encode_utf8;
 pub use unnecessary_future_import::unnecessary_future_import;
 pub use unnecessary_lru_cache_params::unnecessary_lru_cache_params;
 pub use use_pep585_annotation::use_pep585_annotation;
@@ -13,6 +14,7 @@ mod deprecated_unittest_alias;
 mod super_call_with_parameters;
 mod type_of_primitive;
 mod unnecessary_abspath;
+mod unnecessary_encode_utf8;
 mod unnecessary_future_import;
 mod unnecessary_lru_cache_params;
 mod use_pep585_annotation;
--- a/src/pyupgrade/plugins/super_call_with_parameters.rs
+++ b/src/pyupgrade/plugins/super_call_with_parameters.rs
@@ -5,6 +5,7 @@ use crate::check_ast::Checker;
 use crate::pyupgrade;
 use crate::pyupgrade::checks;

+/// U008
 pub fn super_call_with_parameters(checker: &mut Checker, expr: &Expr, func: &Expr, args: &[Expr]) {
    // Only bother going through the super check at all if we're in a `super` call.
    // (We check this in `check_super_args` too, so this is just an optimization.)
--- a/src/pyupgrade/plugins/type_of_primitive.rs
+++ b/src/pyupgrade/plugins/type_of_primitive.rs
@@ -6,6 +6,7 @@ use crate::check_ast::Checker;
 use crate::checks::CheckKind;
 use crate::pyupgrade::checks;

+/// U003
 pub fn type_of_primitive(checker: &mut Checker, expr: &Expr, func: &Expr, args: &[Expr]) {
    if let Some(mut check) = checks::type_of_primitive(func, args, Range::from_located(expr)) {
        if checker.patch() {
--- a/src/pyupgrade/plugins/unnecessary_abspath.rs
+++ b/src/pyupgrade/plugins/unnecessary_abspath.rs
@@ -5,6 +5,7 @@ use crate::autofix::Fix;
 use crate::check_ast::Checker;
 use crate::pyupgrade::checks;

+/// U002
 pub fn unnecessary_abspath(checker: &mut Checker, expr: &Expr, func: &Expr, args: &[Expr]) {
    if let Some(mut check) = checks::unnecessary_abspath(func, args, Range::from_located(expr)) {
        if checker.patch() {
--- a/src/pyupgrade/plugins/unnecessary_encode_utf8.rs
+++ b/src/pyupgrade/plugins/unnecessary_encode_utf8.rs
@@ -0,0 +1,152 @@
+use rustpython_ast::{Constant, Expr, ExprKind, Keyword};
+
+use crate::ast::types::Range;
+use crate::autofix::Fix;
+use crate::check_ast::Checker;
+use crate::checks::{Check, CheckKind};
+use crate::source_code_locator::SourceCodeLocator;
+
+const UTF8_LITERALS: &[&str] = &["utf-8", "utf8", "utf_8", "u8", "utf", "cp65001"];
+
+fn match_encoded_variable(func: &Expr) -> Option<&Expr> {
+    if let ExprKind::Attribute {
+        value: variable,
+        attr,
+        ..
+    } = &func.node
+    {
+        if attr == "encode" {
+            return Some(variable);
+        }
+    }
+    None
+}
+
+fn is_utf8_encoding_arg(arg: &Expr) -> bool {
+    if let ExprKind::Constant {
+        value: Constant::Str(value),
+        ..
+    } = &arg.node
+    {
+        UTF8_LITERALS.contains(&value.to_lowercase().as_str())
+    } else {
+        false
+    }
+}
+
+fn is_default_encode(args: &Vec<Expr>, kwargs: &Vec<Keyword>) -> bool {
+    match (args.len(), kwargs.len()) {
+        // .encode()
+        (0, 0) => true,
+        // .encode(encoding)
+        (1, 0) => is_utf8_encoding_arg(&args[0]),
+        // .encode(kwarg=kwarg)
+        (0, 1) => {
+            kwargs[0].node.arg == Some("encoding".to_string())
+                && is_utf8_encoding_arg(&kwargs[0].node.value)
+        }
+        // .encode(*args, **kwargs)
+        _ => false,
+    }
+}
+
+// Return a Fix for a default `encode` call removing the encoding argument,
+// keyword, or positional.
+fn delete_default_encode_arg_or_kwarg(
+    expr: &Expr,
+    args: &[Expr],
+    kwargs: &[Keyword],
+    patch: bool,
+) -> Option<Check> {
+    if let Some(arg) = args.get(0) {
+        let mut check = Check::new(CheckKind::UnnecessaryEncodeUTF8, Range::from_located(expr));
+        if patch {
+            check.amend(Fix::deletion(arg.location, arg.end_location.unwrap()));
+        }
+        Some(check)
+    } else if let Some(kwarg) = kwargs.get(0) {
+        let mut check = Check::new(CheckKind::UnnecessaryEncodeUTF8, Range::from_located(expr));
+        if patch {
+            check.amend(Fix::deletion(kwarg.location, kwarg.end_location.unwrap()));
+        }
+        Some(check)
+    } else {
+        None
+    }
+}
+
+// Return a Fix replacing the call to encode by a `"b"` prefix on the string.
+fn replace_with_bytes_literal(
+    expr: &Expr,
+    constant: &Expr,
+    locator: &SourceCodeLocator,
+    patch: bool,
+) -> Check {
+    let mut check = Check::new(CheckKind::UnnecessaryEncodeUTF8, Range::from_located(expr));
+    if patch {
+        let content = locator.slice_source_code_range(&Range {
+            location: constant.location,
+            end_location: constant.end_location.unwrap(),
+        });
+        let content = format!(
+            "b{}",
+            content.trim_start_matches('u').trim_start_matches('U')
+        );
+        check.amend(Fix::replacement(
+            content,
+            expr.location,
+            expr.end_location.unwrap(),
+        ))
+    }
+    check
+}
+
+/// U012
+pub fn unnecessary_encode_utf8(
+    checker: &mut Checker,
+    expr: &Expr,
+    func: &Expr,
+    args: &Vec<Expr>,
+    kwargs: &Vec<Keyword>,
+) {
+    if let Some(variable) = match_encoded_variable(func) {
+        match &variable.node {
+            ExprKind::Constant {
+                value: Constant::Str(literal),
+                ..
+            } => {
+                // "str".encode()
+                // "str".encode("utf-8")
+                if is_default_encode(args, kwargs) {
+                    if literal.is_ascii() {
+                        // "foo".encode()
+                        checker.add_check(replace_with_bytes_literal(
+                            expr,
+                            variable,
+                            checker.locator,
+                            checker.patch(),
+                        ));
+                    } else {
+                        // "unicode text©".encode("utf-8")
+                        if let Some(check) =
+                            delete_default_encode_arg_or_kwarg(expr, args, kwargs, checker.patch())
+                        {
+                            checker.add_check(check);
+                        }
+                    }
+                }
+            }
+            // f"foo{bar}".encode(*args, **kwargs)
+            ExprKind::JoinedStr { .. } => {
+                if is_default_encode(args, kwargs) {
+                    if let Some(check) =
+                        delete_default_encode_arg_or_kwarg(expr, args, kwargs, checker.patch())
+                    {
+                        checker.add_check(check);
+                    }
+                }
+            }
+            _ => {}
+        }
+    }
+}
--- a/src/pyupgrade/plugins/unnecessary_future_import.rs
+++ b/src/pyupgrade/plugins/unnecessary_future_import.rs
@@ -1,15 +1,84 @@
+use std::collections::BTreeSet;
+
+use log::error;
+use rustpython_ast::{AliasData, Located};
 use rustpython_parser::ast::Stmt;

 use crate::ast::types::Range;
 use crate::check_ast::Checker;
-use crate::pyupgrade::checks;
+use crate::checks::{Check, CheckKind};
+use crate::pyupgrade::fixes;
+use crate::settings::types::PythonVersion;

-pub fn unnecessary_future_import(checker: &mut Checker, stmt: &Stmt, name: &str) {
-    if let Some(check) = checks::unnecessary_future_import(
-        checker.settings.target_version,
-        name,
-        Range::from_located(stmt),
-    ) {
+const PY33_PLUS_REMOVE_FUTURES: &[&str] = &[
+    "nested_scopes",
+    "generators",
+    "with_statement",
+    "division",
+    "absolute_import",
+    "with_statement",
+    "print_function",
+    "unicode_literals",
+];
+
+const PY37_PLUS_REMOVE_FUTURES: &[&str] = &[
+    "nested_scopes",
+    "generators",
+    "with_statement",
+    "division",
+    "absolute_import",
+    "with_statement",
+    "print_function",
+    "unicode_literals",
+    "generator_stop",
+];
+
+/// U010
+pub fn unnecessary_future_import(checker: &mut Checker, stmt: &Stmt, names: &[Located<AliasData>]) {
+    let target_version = checker.settings.target_version;
+
+    let mut removable_index: Vec<usize> = vec![];
+    let mut removable_names: BTreeSet<&str> = BTreeSet::new();
+    for (index, alias) in names.iter().enumerate() {
+        let name = alias.node.name.as_str();
+        if (target_version >= PythonVersion::Py33 && PY33_PLUS_REMOVE_FUTURES.contains(&name))
+            || (target_version >= PythonVersion::Py37 && PY37_PLUS_REMOVE_FUTURES.contains(&name))
+        {
+            removable_index.push(index);
+            removable_names.insert(name);
+        }
+    }
+
+    if !removable_index.is_empty() {
+        let mut check = Check::new(
+            CheckKind::UnnecessaryFutureImport(
+                removable_names.into_iter().map(String::from).collect(),
+            ),
+            Range::from_located(stmt),
+        );
+        if checker.patch() {
+            let context = checker.binding_context();
+            let deleted: Vec<&Stmt> = checker
+                .deletions
+                .iter()
+                .map(|index| checker.parents[*index])
+                .collect();
+            match fixes::remove_unnecessary_future_import(
+                checker.locator,
+                &removable_index,
+                checker.parents[context.defined_by],
+                context.defined_in.map(|index| checker.parents[index]),
+                &deleted,
+            ) {
+                Ok(fix) => {
+                    if fix.patch.content.is_empty() || fix.patch.content == "pass" {
+                        checker.deletions.insert(context.defined_by);
+                    }
+                    check.amend(fix);
+                }
+                Err(e) => error!("Failed to remove __future__ import: {}", e),
+            }
+        }
        checker.add_check(check);
    }
 }
--- a/src/pyupgrade/plugins/unnecessary_lru_cache_params.rs
+++ b/src/pyupgrade/plugins/unnecessary_lru_cache_params.rs
@@ -3,6 +3,7 @@ use rustpython_parser::ast::Expr;
 use crate::check_ast::Checker;
 use crate::pyupgrade::{checks, fixes};

+/// U011
 pub fn unnecessary_lru_cache_params(checker: &mut Checker, decorator_list: &[Expr]) {
    if let Some(mut check) = checks::unnecessary_lru_cache_params(
        decorator_list,
--- a/src/pyupgrade/plugins/use_pep585_annotation.rs
+++ b/src/pyupgrade/plugins/use_pep585_annotation.rs
@@ -5,6 +5,7 @@ use crate::autofix::Fix;
 use crate::check_ast::Checker;
 use crate::checks::{Check, CheckKind};

+/// U006
 pub fn use_pep585_annotation(checker: &mut Checker, expr: &Expr, id: &str) {
    let mut check = Check::new(
        CheckKind::UsePEP585Annotation(id.to_string()),
--- a/src/pyupgrade/plugins/use_pep604_annotation.rs
+++ b/src/pyupgrade/plugins/use_pep604_annotation.rs
@@ -41,6 +41,7 @@ fn union(elts: &[Expr]) -> Expr {
    }
 }

+/// U007
 pub fn use_pep604_annotation(checker: &mut Checker, expr: &Expr, value: &Expr, slice: &Expr) {
    if checker.match_typing_module(value, "Optional") {
        let mut check = Check::new(CheckKind::UsePEP604Annotation, Range::from_located(expr));
--- a/src/pyupgrade/plugins/useless_metaclass_type.rs
+++ b/src/pyupgrade/plugins/useless_metaclass_type.rs
@@ -6,6 +6,7 @@ use crate::autofix::helpers;
 use crate::check_ast::Checker;
 use crate::pyupgrade::checks;

+/// U001
 pub fn useless_metaclass_type(checker: &mut Checker, stmt: &Stmt, value: &Expr, targets: &[Expr]) {
    if let Some(mut check) =
        checks::useless_metaclass_type(targets, value, Range::from_located(stmt))
@@ -29,7 +30,7 @@ pub fn useless_metaclass_type(checker: &mut Checker, stmt: &Stmt, value: &Expr,
                    }
                    check.amend(fix)
                }
-                Err(e) => error!("Failed to fix unused imports: {}", e),
+                Err(e) => error!("Failed to fix remove metaclass type: {}", e),
            }
        }
        checker.add_check(check);
--- a/src/pyupgrade/plugins/useless_object_inheritance.rs
+++ b/src/pyupgrade/plugins/useless_object_inheritance.rs
@@ -4,6 +4,7 @@ use crate::check_ast::Checker;
 use crate::pyupgrade;
 use crate::pyupgrade::checks;

+/// U004
 pub fn useless_object_inheritance(
    checker: &mut Checker,
    stmt: &Stmt,
--- a/src/rules/checks.rs
+++ b/src/rules/checks.rs
@@ -1,5 +1,4 @@
-use std::collections::BTreeMap;
-
+use fnv::FnvHashMap;
 use once_cell::sync::Lazy;
 use rustpython_ast::Location;

@@ -10,8 +9,8 @@ use crate::source_code_locator::SourceCodeLocator;
 use crate::Check;

 /// See: https://github.com/microsoft/vscode/blob/095ddabc52b82498ee7f718a34f9dd11d59099a8/src/vs/base/common/strings.ts#L1094
-static CONFUSABLES: Lazy<BTreeMap<u32, u32>> = Lazy::new(|| {
-    BTreeMap::from([
+static CONFUSABLES: Lazy<FnvHashMap<u32, u32>> = Lazy::new(|| {
+    FnvHashMap::from_iter([
        (8232, 32),
        (8233, 32),
        (5760, 32),
--- a/src/settings/configuration.rs
+++ b/src/settings/configuration.rs
@@ -12,7 +12,7 @@ use regex::Regex;
 use crate::checks_gen::CheckCodePrefix;
 use crate::settings::pyproject::load_options;
 use crate::settings::types::{FilePattern, PerFileIgnore, PythonVersion};
-use crate::{flake8_annotations, flake8_quotes, fs, isort, pep8_naming};
+use crate::{flake8_annotations, flake8_bugbear, flake8_quotes, fs, isort, pep8_naming};

 #[derive(Debug)]
 pub struct Configuration {
@@ -30,6 +30,7 @@ pub struct Configuration {
    pub target_version: PythonVersion,
    // Plugins
    pub flake8_annotations: flake8_annotations::settings::Settings,
+    pub flake8_bugbear: flake8_bugbear::settings::Settings,
    pub flake8_quotes: flake8_quotes::settings::Settings,
    pub isort: isort::settings::Settings,
    pub pep8_naming: pep8_naming::settings::Settings,
@@ -133,6 +134,10 @@ impl Configuration {
                .flake8_annotations
                .map(flake8_annotations::settings::Settings::from_options)
                .unwrap_or_default(),
+            flake8_bugbear: options
+                .flake8_bugbear
+                .map(flake8_bugbear::settings::Settings::from_options)
+                .unwrap_or_default(),
            flake8_quotes: options
                .flake8_quotes
                .map(flake8_quotes::settings::Settings::from_options)
--- a/src/settings/mod.rs
+++ b/src/settings/mod.rs
@@ -2,10 +2,10 @@
 //! command-line options. Structure is optimized for internal usage, as opposed
 //! to external visibility or parsing.

-use std::collections::BTreeSet;
 use std::hash::{Hash, Hasher};
 use std::path::PathBuf;

+use fnv::FnvHashSet;
 use path_absolutize::path_dedot;
 use regex::Regex;

@@ -13,7 +13,7 @@ use crate::checks::CheckCode;
 use crate::checks_gen::{CheckCodePrefix, PrefixSpecificity};
 use crate::settings::configuration::Configuration;
 use crate::settings::types::{FilePattern, PerFileIgnore, PythonVersion};
-use crate::{flake8_annotations, flake8_quotes, isort, pep8_naming};
+use crate::{flake8_annotations, flake8_bugbear, flake8_quotes, isort, pep8_naming};

 pub mod configuration;
 pub mod options;
@@ -24,7 +24,7 @@ pub mod user;
 #[derive(Debug)]
 pub struct Settings {
    pub dummy_variable_rgx: Regex,
-    pub enabled: BTreeSet<CheckCode>,
+    pub enabled: FnvHashSet<CheckCode>,
    pub exclude: Vec<FilePattern>,
    pub extend_exclude: Vec<FilePattern>,
    pub line_length: usize,
@@ -33,6 +33,7 @@ pub struct Settings {
    pub target_version: PythonVersion,
    // Plugins
    pub flake8_annotations: flake8_annotations::settings::Settings,
+    pub flake8_bugbear: flake8_bugbear::settings::Settings,
    pub flake8_quotes: flake8_quotes::settings::Settings,
    pub isort: isort::settings::Settings,
    pub pep8_naming: pep8_naming::settings::Settings,
@@ -51,6 +52,7 @@ impl Settings {
            exclude: config.exclude,
            extend_exclude: config.extend_exclude,
            flake8_annotations: config.flake8_annotations,
+            flake8_bugbear: config.flake8_bugbear,
            flake8_quotes: config.flake8_quotes,
            isort: config.isort,
            line_length: config.line_length,
@@ -64,7 +66,7 @@ impl Settings {
    pub fn for_rule(check_code: CheckCode) -> Self {
        Self {
            dummy_variable_rgx: Regex::new("^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$").unwrap(),
-            enabled: BTreeSet::from([check_code]),
+            enabled: FnvHashSet::from_iter([check_code]),
            exclude: Default::default(),
            extend_exclude: Default::default(),
            line_length: 88,
@@ -72,6 +74,7 @@ impl Settings {
            src: vec![path_dedot::CWD.clone()],
            target_version: PythonVersion::Py310,
            flake8_annotations: Default::default(),
+            flake8_bugbear: Default::default(),
            flake8_quotes: Default::default(),
            isort: Default::default(),
            pep8_naming: Default::default(),
@@ -81,7 +84,7 @@ impl Settings {
    pub fn for_rules(check_codes: Vec<CheckCode>) -> Self {
        Self {
            dummy_variable_rgx: Regex::new("^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$").unwrap(),
-            enabled: BTreeSet::from_iter(check_codes),
+            enabled: FnvHashSet::from_iter(check_codes),
            exclude: Default::default(),
            extend_exclude: Default::default(),
            line_length: 88,
@@ -89,6 +92,7 @@ impl Settings {
            src: vec![path_dedot::CWD.clone()],
            target_version: PythonVersion::Py310,
            flake8_annotations: Default::default(),
+            flake8_bugbear: Default::default(),
            flake8_quotes: Default::default(),
            isort: Default::default(),
            pep8_naming: Default::default(),
@@ -123,8 +127,8 @@ fn resolve_codes(
    extend_select: &[CheckCodePrefix],
    ignore: &[CheckCodePrefix],
    extend_ignore: &[CheckCodePrefix],
-) -> BTreeSet<CheckCode> {
-    let mut codes: BTreeSet<CheckCode> = BTreeSet::new();
+) -> FnvHashSet<CheckCode> {
+    let mut codes: FnvHashSet<CheckCode> = FnvHashSet::default();
    for specificity in [
        PrefixSpecificity::Category,
        PrefixSpecificity::Hundreds,
@@ -161,7 +165,7 @@ fn resolve_codes(

 #[cfg(test)]
 mod tests {
-    use std::collections::BTreeSet;
+    use fnv::FnvHashSet;

    use crate::checks::CheckCode;
    use crate::checks_gen::CheckCodePrefix;
@@ -170,19 +174,19 @@ mod tests {
    #[test]
    fn resolver() {
        let actual = resolve_codes(&[CheckCodePrefix::W], &[], &[], &[]);
-        let expected = BTreeSet::from_iter([CheckCode::W292, CheckCode::W605]);
+        let expected = FnvHashSet::from_iter([CheckCode::W292, CheckCode::W605]);
        assert_eq!(actual, expected);

        let actual = resolve_codes(&[CheckCodePrefix::W6], &[], &[], &[]);
-        let expected = BTreeSet::from_iter([CheckCode::W605]);
+        let expected = FnvHashSet::from_iter([CheckCode::W605]);
        assert_eq!(actual, expected);

        let actual = resolve_codes(&[CheckCodePrefix::W], &[], &[CheckCodePrefix::W292], &[]);
-        let expected = BTreeSet::from_iter([CheckCode::W605]);
+        let expected = FnvHashSet::from_iter([CheckCode::W605]);
        assert_eq!(actual, expected);

        let actual = resolve_codes(&[CheckCodePrefix::W605], &[], &[CheckCodePrefix::W605], &[]);
-        let expected = BTreeSet::from_iter([]);
+        let expected = FnvHashSet::from_iter([]);
        assert_eq!(actual, expected);
    }
 }
--- a/src/settings/options.rs
+++ b/src/settings/options.rs
@@ -6,7 +6,7 @@ use serde::{Deserialize, Serialize};

 use crate::checks_gen::CheckCodePrefix;
 use crate::settings::types::PythonVersion;
-use crate::{flake8_annotations, flake8_quotes, isort, pep8_naming};
+use crate::{flake8_annotations, flake8_bugbear, flake8_quotes, isort, pep8_naming};

 #[derive(Debug, PartialEq, Eq, Serialize, Deserialize, Default)]
 #[serde(deny_unknown_fields, rename_all = "kebab-case")]
@@ -19,13 +19,15 @@ pub struct Options {
    pub fix: Option<bool>,
    pub ignore: Option<Vec<CheckCodePrefix>>,
    pub line_length: Option<usize>,
-    pub per_file_ignores: Option<BTreeMap<String, Vec<CheckCodePrefix>>>,
    pub select: Option<Vec<CheckCodePrefix>>,
    pub src: Option<Vec<String>>,
    pub target_version: Option<PythonVersion>,
    // Plugins
    pub flake8_annotations: Option<flake8_annotations::settings::Options>,
+    pub flake8_bugbear: Option<flake8_bugbear::settings::Options>,
    pub flake8_quotes: Option<flake8_quotes::settings::Options>,
    pub isort: Option<isort::settings::Options>,
    pub pep8_naming: Option<pep8_naming::settings::Options>,
+    // Tables are required to go last.
+    pub per_file_ignores: Option<BTreeMap<String, Vec<CheckCodePrefix>>>,
 }
--- a/src/settings/pyproject.rs
+++ b/src/settings/pyproject.rs
@@ -109,7 +109,7 @@ mod tests {
        find_project_root, find_pyproject_toml, parse_pyproject_toml, Options, Pyproject, Tools,
    };
    use crate::settings::types::PatternPrefixPair;
-    use crate::{flake8_quotes, pep8_naming};
+    use crate::{flake8_bugbear, flake8_quotes, pep8_naming};

    #[test]
    fn deserialize() -> Result<()> {
@@ -146,6 +146,7 @@ mod tests {
                    src: None,
                    target_version: None,
                    flake8_annotations: None,
+                    flake8_bugbear: None,
                    flake8_quotes: None,
                    isort: None,
                    pep8_naming: None,
@@ -177,6 +178,7 @@ line-length = 79
                    src: None,
                    target_version: None,
                    flake8_annotations: None,
+                    flake8_bugbear: None,
                    flake8_quotes: None,
                    isort: None,
                    pep8_naming: None,
@@ -208,6 +210,7 @@ exclude = ["foo.py"]
                    src: None,
                    target_version: None,
                    flake8_annotations: None,
+                    flake8_bugbear: None,
                    flake8_quotes: None,
                    isort: None,
                    pep8_naming: None,
@@ -239,6 +242,7 @@ select = ["E501"]
                    src: None,
                    target_version: None,
                    flake8_annotations: None,
+                    flake8_bugbear: None,
                    flake8_quotes: None,
                    isort: None,
                    pep8_naming: None,
@@ -271,6 +275,7 @@ ignore = ["E501"]
                    src: None,
                    target_version: None,
                    flake8_annotations: None,
+                    flake8_bugbear: None,
                    flake8_quotes: None,
                    isort: None,
                    pep8_naming: None,
@@ -349,6 +354,12 @@ other-attribute = 1
                src: None,
                target_version: None,
                flake8_annotations: None,
+                flake8_bugbear: Some(flake8_bugbear::settings::Options {
+                    extend_immutable_calls: Some(vec![
+                        "fastapi.Depends".to_string(),
+                        "fastapi.Query".to_string(),
+                    ]),
+                }),
                flake8_quotes: Some(flake8_quotes::settings::Options {
                    inline_quotes: Some(Quote::Single),
                    multiline_quotes: Some(Quote::Double),
--- a/src/snapshots/rufflintertests__B019_B019.py.snap
+++ b/src/snapshots/rufflintertests__B019_B019.py.snap
@@ -0,0 +1,69 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: CachedInstanceMethod
+  location:
+    row: 78
+    column: 5
+  end_location:
+    row: 78
+    column: 20
+  fix: ~
+- kind: CachedInstanceMethod
+  location:
+    row: 82
+    column: 5
+  end_location:
+    row: 82
+    column: 10
+  fix: ~
+- kind: CachedInstanceMethod
+  location:
+    row: 86
+    column: 5
+  end_location:
+    row: 86
+    column: 22
+  fix: ~
+- kind: CachedInstanceMethod
+  location:
+    row: 90
+    column: 5
+  end_location:
+    row: 90
+    column: 12
+  fix: ~
+- kind: CachedInstanceMethod
+  location:
+    row: 94
+    column: 5
+  end_location:
+    row: 94
+    column: 24
+  fix: ~
+- kind: CachedInstanceMethod
+  location:
+    row: 98
+    column: 5
+  end_location:
+    row: 98
+    column: 14
+  fix: ~
+- kind: CachedInstanceMethod
+  location:
+    row: 102
+    column: 5
+  end_location:
+    row: 102
+    column: 26
+  fix: ~
+- kind: CachedInstanceMethod
+  location:
+    row: 106
+    column: 5
+  end_location:
+    row: 106
+    column: 16
+  fix: ~
+
--- a/src/snapshots/rufflintertests__F401_F401_0.py.snap
+++ b/src/snapshots/rufflintertests__F401_F401_0.py.snap
@@ -67,19 +67,19 @@ expression: checks
      - - shelve
      - false
  location:
-    row: 33
+    row: 32
    column: 4
  end_location:
-    row: 33
+    row: 32
    column: 17
  fix:
    patch:
      content: ""
      location:
-        row: 33
+        row: 32
        column: 0
      end_location:
-        row: 34
+        row: 33
        column: 0
    applied: false
 - kind:
@@ -87,39 +87,39 @@ expression: checks
      - - importlib
      - false
  location:
-    row: 34
+    row: 33
    column: 4
  end_location:
-    row: 34
+    row: 33
    column: 20
  fix:
    patch:
-      content: ""
+      content: pass
      location:
-        row: 34
-        column: 0
+        row: 33
+        column: 4
      end_location:
-        row: 35
-        column: 0
+        row: 33
+        column: 20
    applied: false
 - kind:
    UnusedImport:
      - - pathlib
      - false
  location:
-    row: 38
+    row: 37
    column: 4
  end_location:
-    row: 38
+    row: 37
    column: 18
  fix:
    patch:
      content: ""
      location:
-        row: 38
+        row: 37
        column: 0
      end_location:
-        row: 39
+        row: 38
        column: 0
    applied: false
 - kind:
@@ -127,19 +127,19 @@ expression: checks
      - - pickle
      - false
  location:
-    row: 53
+    row: 52
    column: 8
  end_location:
-    row: 53
+    row: 52
    column: 21
  fix:
    patch:
      content: pass
      location:
-        row: 53
+        row: 52
        column: 8
      end_location:
-        row: 53
+        row: 52
        column: 21
    applied: false

--- a/src/snapshots/rufflintertests__S101_S101.py.snap
+++ b/src/snapshots/rufflintertests__S101_S101.py.snap
@@ -0,0 +1,29 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: AssertUsed
+  location:
+    row: 2
+    column: 0
+  end_location:
+    row: 2
+    column: 11
+  fix: ~
+- kind: AssertUsed
+  location:
+    row: 8
+    column: 4
+  end_location:
+    row: 8
+    column: 17
+  fix: ~
+- kind: AssertUsed
+  location:
+    row: 11
+    column: 4
+  end_location:
+    row: 11
+    column: 17
+  fix: ~
+
--- a/src/snapshots/rufflintertests__S102_S102.py.snap
+++ b/src/snapshots/rufflintertests__S102_S102.py.snap
@@ -0,0 +1,21 @@
+---
+source: src/linter.rs
+expression: checks
+---
+- kind: ExecUsed
+  location:
+    row: 3
+    column: 4
+  end_location:
+    row: 3
+    column: 17
+  fix: ~
+- kind: ExecUsed
+  location:
+    row: 5
+    column: 0
+  end_location:
+    row: 5
+    column: 13
+  fix: ~
+
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Charlie Marsh	695b06ba60	Bump version to 0.0.115	2022-11-12 16:46:26 -05:00
Charlie Marsh	3a2e6926d4	Include flake8-bugbear settings in flake8-to-ruff (#712 )	2022-11-12 16:46:12 -05:00
Charlie Marsh	d16c3a1186	Use an FNVHashSet for `settings.enabled` (#711 )	2022-11-12 16:36:56 -05:00
Charlie Marsh	53a2187f02	Run cargo fmt	2022-11-12 16:33:12 -05:00
Charlie Marsh	00b5d1059c	Validate that mutable and immutable defaults are imported (#710 )	2022-11-12 16:32:21 -05:00
Charlie Marsh	b7acf76aaf	Track all import-from members (#709 )	2022-11-12 16:10:43 -05:00
Charlie Marsh	8cfc0e5cf5	Use FnvHasher for unordered maps and sets (#708 )	2022-11-12 16:09:34 -05:00
Edgar R. M	aa7681f9ad	Add `extend-immutable-calls` setting for B008 (#706 )	2022-11-12 15:48:34 -05:00
Charlie Marsh	2493d48725	Add flake8-bandit to flake8-to-ruff (#701 )	2022-11-12 12:08:15 -05:00
Edgar R. M	1b422a7f12	Add `flake8-bandit` (#697 )	2022-11-12 12:04:49 -05:00
Charlie Marsh	da051624e4	Add backticks around functools.lru_cache	2022-11-12 11:56:23 -05:00
Charlie Marsh	da9ae6a42a	Bump version to 0.0.114	2022-11-12 11:55:18 -05:00
Martin Lehoux	afa59d78bb	feat: no unnecessary encode utf8 (#686 )	2022-11-12 11:54:36 -05:00
Charlie Marsh	bbc38fea73	Avoid generating empty statement bodies (#700 )	2022-11-12 11:39:09 -05:00
Chammika Mannakkara	6bcc11a90f	add fixes for __future__ import removal (#682 )	2022-11-12 11:28:05 -05:00
Harutaka Kawamura	6f36e5dd25	Implement B019 (#695 )	2022-11-12 11:14:03 -05:00
Anders Kaseorg	1d13752eb1	Remove static isort classifications for __main__, disutils (#694 )	2022-11-12 09:13:38 -05:00
Anders Kaseorg	394af0dcff	Disable default features of chrono (#696 )	2022-11-12 09:02:02 -05:00
Charlie Marsh	51cee471a0	Add test case for import-from wrapping	2022-11-11 23:46:19 -05:00
Charlie Marsh	8df3a5437a	Take indentation into account for import-from wrapping (#693 )	2022-11-11 23:45:04 -05:00
Charlie Marsh	a21fe716f2	Bump version to 0.0.113	2022-11-11 22:42:02 -05:00
Charlie Marsh	558883299a	Default to isort's import sort logic (#691 )	2022-11-11 22:41:39 -05:00
Charlie Marsh	048a13c795	Add a separate local folder category for imports (#690 )	2022-11-11 22:12:48 -05:00
Anders Kaseorg	5a8b7c1d20	Implement flake8-2020 (sys.version, sys.version_info misuse) (#688 )	2022-11-11 20:39:37 -05:00
Charlie Marsh	f8932ec12b	Add some TODOs around import tracking	2022-11-11 19:07:40 -05:00
Charlie Marsh	2e7878ff48	Bump version to 0.0.112	2022-11-11 17:13:04 -05:00
Anders Kaseorg	5113ded22a	Add ruff.__main__ wrapper to allow invocation as ‘python -m ruff’ (#687 )	2022-11-11 15:53:42 -05:00
Anders Kaseorg	bf7bf7aa17	Only scan checks once in check_lines (#679 )	2022-11-11 13:34:23 -05:00