Replace flake8/isort/black with ruff (#541)

Author: snowkoli

.gitignore

@@ -99,6 +99,9 @@ db.sqlite3
 # local data
 local/
 
+# ruff
+.ruff_cache
+
 # runtime data
 runtime/
 

.pre-commit-config.yaml

@@ -15,19 +15,15 @@ repos:
     hooks:
       - id: pyupgrade
         args: [--py38-plus]
-  - repo: https://github.com/PyCQA/isort
-    rev: 6.0.1
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    # Ruff version.
+    rev: v0.12.4
     hooks:
-      - id: isort
-  - repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 25.1.0
-    hooks:
-      - id: black
-        language_version: python3
-  - repo: https://github.com/PyCQA/flake8
-    rev: 7.3.0
-    hooks:
-      - id: flake8
+      # Run the linter.
+      - id: ruff-check
+        args: [ --fix ]
+      # Run the formatter.
+      - id: ruff-format
   - repo: https://github.com/codespell-project/codespell
     rev: v2.4.1
     hooks:

pyproject.toml

@@ -70,15 +70,35 @@ skip = ".git,*.pdf,*.svg"
 ignore-regex = "\bNd\b"
 ignore-words-list = "re-use"
 
-[tool.isort]
-profile = "black"
-split_on_trailing_comma = true
-combine_as_imports = true
-
 [tool.setuptools_scm]
 # To enable SCM versioning, we need an empty tool configuration for setuptools_scm
 
 [tool.check-wheel-contents]
 # WOO7: wheel library is empty
 # W008: wheel is empty
 ignore = "W007,W008"
+
+[tool.ruff.lint]
+# In addition to the default rules, these additional rules will be used:
+extend-select = [
+    "E",      # pycodestyle
+    "W",      # pycodestyle
+    "F",      # pyflakes
+    "UP",     # pyupgrade
+    "B",      # flake8-bugbear
+    "YTT",    # flake8-2020
+    "ASYNC",  # flake8-async
+    "C4",     # flake8-comprehensions
+    "I",      # isort
+    # The SIM rules are *very* opinionated, and don't necessarily make for better code.
+    # They may be worth occasionally turning on just to see if something could actually
+    # use improvement.
+    # "SIM",    # flake8-simplify
+]
+ignore = [
+ "F821",  # Undefined name `tags`
+ "E501"  # Line too long
+ ]
+
+[tool.ruff.lint.isort]
+combine-as-imports = true

tox.ini

@@ -1,20 +1,3 @@
-# Flake8 doesn't believe in pyproject.toml, so we put the configuration here.
-[flake8]
-# https://flake8.readthedocs.org/en/latest/
-exclude=\
-    venv*/*,\
-    local/*,\
-    docs/*,\
-    build/*,\
-    tests/apps/*,\
-    .eggs/*,\
-    .tox/*
-max-line-length = 119
-extend-ignore =
-    # whitespace before :
-    # See https://github.com/PyCQA/pycodestyle/issues/373
-    E203,
-
 [tox]
 envlist = pre-commit,package,docs-lint,docs-all