ci: Move flake8 config into pyproject.toml (#4185)

Consolidate configuration into `pyproject.toml`.

Author: antonpirker

.flake8

@@ -1,3 +1,7 @@
+#
+# Tool: Black
+#
+
 [tool.black]
 # 'extend-exclude' excludes files or directories in addition to the defaults
 extend-exclude = '''
@@ -9,6 +13,11 @@ extend-exclude = '''
 )
 '''
 
+
+#
+# Tool: Coverage
+#
+
 [tool.coverage.run]
 branch = true
 omit = [
@@ -22,6 +31,10 @@ exclude_also = [
     "if TYPE_CHECKING:",
 ]
 
+#
+# Tool: Pytest
+#
+
 [tool.pytest.ini_options]
 addopts = "-vvv -rfEs -s --durations=5 --cov=./sentry_sdk --cov-branch --cov-report= --tb=short --junitxml=.junitxml"
 asyncio_mode = "strict"
@@ -34,6 +47,10 @@ markers = [
 verbose = true
 nobeep = true
 
+#
+# Tool: Mypy
+#
+
 [tool.mypy]
 allow_redefinition = true
 check_untyped_defs = true
@@ -43,7 +60,7 @@ disallow_subclassing_any = true
 disallow_untyped_decorators = true
 disallow_untyped_defs = true
 no_implicit_optional = true
-python_version = "3.11" 
+python_version = "3.11"
 strict_equality = true
 strict_optional = true
 warn_redundant_casts = true
@@ -165,3 +182,31 @@ ignore_missing_imports = true
 [[tool.mypy.overrides]]
 module = "grpc.*"
 ignore_missing_imports = true
+
+#
+# Tool: Flake8
+#
+
+[tool.flake8]
+extend-ignore = [
+  # Handled by black (Whitespace before ':' -- handled by black)
+  "E203",
+  # Handled by black (Line too long)
+  "E501",
+  # Sometimes not possible due to execution order (Module level import is not at top of file)
+  "E402",
+  # I don't care (Do not assign a lambda expression, use a def)
+  "E731",
+  # does not apply to Python 2 (redundant exception types by flake8-bugbear)
+  "B014",
+  # I don't care (Lowercase imported as non-lowercase by pep8-naming)
+  "N812",
+  # is a worse version of and conflicts with B902 (first argument of a classmethod should be named cls)
+  "N804",
+]
+extend-exclude = ["checkouts", "lol*"]
+exclude = [
+  # gRCP generated files
+  "grpc_test_service_pb2.py",
+  "grpc_test_service_pb2_grpc.py",
+]

pyproject.toml

@@ -1,6 +1,9 @@
 mypy
 black
-flake8==5.0.4  # flake8 depends on pyflakes>=3.0.0 and this dropped support for Python 2 "# type:" comments
+flake8==5.0.4
+flake8-pyproject  # Flake8 plugin to support configuration in pyproject.toml
+flake8-bugbear  # Flake8 plugin
+pep8-naming  # Flake8 plugin
 types-certifi
 types-protobuf
 types-gevent
@@ -11,8 +14,6 @@ types-webob
 opentelemetry-distro
 pymongo # There is no separate types module.
 loguru # There is no separate types module.
-flake8-bugbear
-pep8-naming
 pre-commit # local linting
 httpcore
 launchdarkly-server-sdk