proxy.py/.flake8

[flake8]

# Don't even try to analyze these:
extend-exclude =
  # No need to traverse egg info dir
  *.egg-info,
  # GitHub configs
  .github,
  # Cache files of MyPy
  .mypy_cache,
  # Cache files of pytest
  .pytest_cache,
  # Temp dir of pytest-testmon
  .tmontmp,
  # Occasional virtualenv dir
  .venv,
  # VS Code
  .vscode,
  # Temporary build dir
  build,
  # This contains sdists and wheels of proxy.py that we don't want to check
  dist,
  # Occasional virtualenv dir
  env,
  # Metadata of `pip wheel` cmd is autogenerated
  pip-wheel-metadata,

# IMPORTANT: avoid using ignore option, always use extend-ignore instead
# Completely and unconditionally ignore the following errors:
extend-ignore =
  I  # flake8-isort is drunk + we have isort integrated into pre-commit
  B009    # FIXME: `getattr()` called with a constant arg
  C812    # FIXME: missing trailing comma
  C819    # FIXME: inline trailing comma
  D101
  D102
  D103
  D105
  D106
  D107
  D203
  D205
  D208
  D209
  D212
  D213
  D300
  D400
  D401
  D402
  D403
  D404
  D405
  D407
  D412
  D413
  D415
  DAR101  # FIXME: undocumented docstring param
  DAR201  # FIXME: no "returns" in docstring
  DAR301  # FIXME: no "yields" in docstring
  DAR401  # FIXME: no "raises" in docstring
  E800    # FIXME: commented out code
  N400    # FIXME: escaping with backslash at EOL
  N801    # FIXME: class name should use ProudCamelCase
  N802    # FIXME: func name should be lowercase
  N816    # FIXME: mixed case var name
  P101    # FIXME: format string with unindexed params
  PT009   # FIXME: pytest encourages use of `assert`
  PT018   # FIXME: use multiple `assert`s instead of one complex
  Q000    # FIXME: inconsistent double quotes use when single ones are needed
  Q001    # FIXME: use double quotes in multiline strings
  Q002    # FIXME: use double quote docstrings
  Q003    # FIXME: avoid escaping in-string quotes
  RST201  # FIXME: missing trailing blank line in docstring
  RST203  # FIXME: no trailing blank line in docstring
  RST301  # FIXME: unexpected indent in docstring
  S101    # FIXME: assertions are thrown away in optimized mode, needs audit
  S104    # FIXME: bind-all interface listen
  S105    # FIXME: hardcoded password?
  S303    # FIXME: insecure hash func
  S311    # FIXME: `random` needs auditing
  S404    # FIXME: `subprocess` use needs auditing
  S603    # FIXME: audit untrusted `subprocess.Popen` input
  S607    # FIXME: running subprocess with a non-absolute executable path
  WPS100  # FIXME: unhelpful module name
  WPS102  # FIXME: incorrect module name pattern
  WPS110  # FIXME: unhelpful var name
  WPS111  # FIXME: too short var name
  WPS114  # FIXME: underscored numbers in var name
  WPS115  # FIXME: uppercase class attr
  WPS118  # FIXME: long func name
  WPS120  # FIXME: regular name w/ trailing underscore
  WPS121  # FIXME: unused var used 0_O
  WPS122  # FIXME: unused var definition 0_O
  WPS201  # FIXME: too many imports
  WPS202  # FIXME: too many mod members
  WPS203  # FIXME: too many mod imported names
  WPS204  # FIXME: too much copy-paste
  WPS210  # FIXME: too many local vars
  WPS211  # FIXME: too many "__init__()" args
  WPS212  # FIXME: too many "return"s
  WPS213  # FIXME: too many expressions
  WPS214  # FIXME: too many methods
  WPS216  # FIXME: too many decorators
  WPS219  # FIXME: deep object access is unreadable
  WPS220  # FIXME: deep code nesting
  WPS221  # FIXME: too big inline complexity / tested instructions
  WPS222  # FIXME: too much logic in condition
  WPS223  # FIXME: the code is too branchy
  WPS225  # FIXME: too many "except"s
  WPS226  # FIXME: magic string constant used too much, put it in a var
  WPS229  # FIXME: try/except should wrap exactly one instruction
  WPS230  # FIXME: too many public instance attrs
  WPS231  # FIXME: insane complexity/code nesting in a function
  WPS232  # FIXME: module is too complex
  WPS234  # FIXME: annotation is too complex
  WPS235  # FIXME: too many imported names from a single module
  WPS237  # FIXME: too complex f-string
  WPS300  # local folder imports are needed
  WPS301  # FIXME: dotted import
  WPS305  # this project is Python 3 only and so f-strings are allowed
  WPS306  # this project is Python 3 so it doesn't need an explicit class base
  WPS313  # FIXME: parens after keyword
  WPS317  # enforces weird indents
  WPS318  # enforces weird indents
  WPS319  # FIXME: asymmetric closing bracket
  WPS320  # FIXME: multiline func type annotation
  WPS322  # FIXME: inline multiline str
  WPS323  # false-positive: %-formatting in logging
  WPS324  # FIXME: inconsistent "return" in func
  WPS326  # doesn't allow implicit string concat
  WPS328  # FIXME: useless `while` node
  WPS336  # FIXME: explicit string concat
  WPS337  # FIXME: multiline conditions
  WPS338  # FIXME: unordered class methods
  WPS339  # FIXME: meaningless leading zeros in number
  WPS349  # FIXME: redundant slice
  WPS360  # FIXME: unnecessary r-string
  WPS361  # FIXME: inconsistent comprehension structure
  WPS403  # FIXME: `# noqa` overuse
  WPS407  # FIXME: mutable mod const
  WPS408  # FIXME: duplicate logical condition
  WPS410  # allow `__all__`
  WPS412  # FIXME: logic in `__init__`
  WPS414  # FIXME: consusing unpacking target
  WPS420  # FIXME: pointless keyword like `pass`
  WPS421  # FIXME: call to `print()`
  WPS425  # FIXME: bool non-keyword arg
  WPS427  # FIXME: unreachable code
  WPS428  # FIXME: pointless statement
  WPS430  # FIXME: nested func
  WPS431  # FIXME: nested class
  WPS432  # FIXME: magic number w/o assigned context/name
  WPS433  # FIXME: nested import
  WPS437  # FIXME: protected attr access
  WPS440  # FIXME: block vars overlap
  WPS441  # FIXME: control var use after block
  WPS442  # FIXME: outer scope var shadowing
  WPS453  # FIXME: executable file w/o shebang
  WPS454  # FIXME: don't raise a broad exception, use a specific one
  WPS457  # FIXME: infinite `while`
  WPS458  # FIXME: import collision
  WPS460  # FIXME: single element unpacking
  WPS464  # FIXME: empty comment
  WPS501  # FIXME: "finally" in "try" w/o "except"
  WPS504  # FIXME: invert a negated condition
  WPS505  # FIXME: nested "try" in "try"
  WPS507  # FIXME: useless `len()`
  WPS508  # FIXME: misused `not` in if-clause
  WPS509  # FIXME: incorrect ternary nesting
  WPS510  # FIXME: if-clause with `in` operator w/ wrong set semantics
  WPS513  # FIXME: implicit `elif`
  WPS515  # FIXME: implicit `open()` w/o a CM
  WPS518  # FIXME: implicit `enumerate()` pattern
  WPS519  # FIXME: implicit `sum()` pattern
  WPS528  # FIXME: implicit `dict.items()` pattern
  WPS529  # FIXME: implicit `dict.get()` pattern
  WPS531  # FIXME: simplifiable returning `if` in func
  WPS602  # FIXME: `@staticmethod` is usually a code smell, use module funcs
  WPS604  # FIXME: incorrect class body node
  WPS605  # FIXME: method w/o args
  WPS609  # FIXME: direct call to magic method
  WPS612  # FIXME: useless `__init__()` override
  WPS613  # FIXME: unmatching super method access
  WPS615  # FIXME: unpythonic setter/getter

# https://wemake-python-stylegui.de/en/latest/pages/usage/formatter.html
format = wemake

# Let's not overcomplicate the code:
#max-complexity = 10
# FIXME: this is a lot!
max-complexity = 19

# Accessibility/large fonts and PEP8 friendly:
#max-line-length = 79
# Accessibility/large fonts and PEP8 unfriendly:
#max-line-length = 100
# Even more Accessibility/large fonts and PEP8 unfriendlier:
max-line-length = 127

# Allow certain violations in certain files:
per-file-ignores =

  # E800 reports a lot of false-positives for legit
  # tool-related comments;
  # WPS412 logic of an extension is in __init__.py file;
  # FIXME: WPS201 too many imports
  # FIXME: WPS402 too many `noqa`s
  #proxy/__init__.py: E800, WPS201, WPS402, WPS412

  # There are multiple `assert`s (S101)
  # and subprocesses (import – S404; call – S603) in tests;
  # also, using fixtures looks like shadowing the outer scope (WPS442);
  # and finally it's impossible to have <= members in tests (WPS202):
  tests/**.py: S101, S404, S603, WPS202, WPS442

# wemake-python-styleguide
show-source = true

# flake8-pytest-style
# PT001:
pytest-fixture-no-parentheses = true
# PT006:
pytest-parametrize-names-type = tuple
# PT007:
pytest-parametrize-values-type = tuple
pytest-parametrize-values-row-type = tuple
# PT023:
pytest-mark-no-parentheses = true

# flake8-rst-docstrings
rst-directives =
  spelling
rst-roles =
  # Built-in Sphinx roles:
  class,
  data,
  exc,
  meth,
  term,
  py:class,
  py:data,
  py:exc,
  py:meth,
  py:term,
  # Sphinx's internal role:
  event,