.flake8

[flake8]
max-line-length = 80
# Select (turn on)
# * Complexity violations reported by mccabe (C) -
#   http://flake8.pycqa.org/en/latest/user/error-codes.html#error-violation-codes
# * Documentation conventions compliance reported by pydocstyle (D) -
#   http://www.pydocstyle.org/en/stable/error_codes.html
# * Default errors and warnings reported by pycodestyle (E and W) -
#   https://pycodestyle.readthedocs.io/en/latest/intro.html#error-codes
# * Default errors reported by pyflakes (F) -
#   http://flake8.pycqa.org/en/latest/glossary.html#term-pyflakes
# * Default warnings reported by flake8-bugbear (B) -
#   https://github.com/PyCQA/flake8-bugbear#list-of-warnings
# * The B950 flake8-bugbear opinionated warning -
#   https://github.com/PyCQA/flake8-bugbear#opinionated-warnings
select = C,D,E,F,W,B,B950
# Ignore flake8's default warning about "whitespace before ':'" as it is not
# PEP 8 compliant and conflicts with black's styling.
#
# Ignore flake8's default warning about maximum line length, which has
# a hard stop at the configured value.  Instead we use
# flake8-bugbear's B950, which allows up to 10% overage.
#
# Also ignore flake8's warning about line breaks before binary
# operators.  It no longer agrees with PEP8.  See, for example, here:
# https://github.com/ambv/black/issues/21. Guido agrees here:
# https://github.com/python/peps/commit/c59c4376ad233a62ca4b3a6060c81368bd21e85b.
ignore = E203,E501,W503