.flake8

[flake8]
select = C,E,F,W
exclude =
    ./build,
    # A trick to exclude fluid/ but keep fluid/tests/, see more at
    # https://github.com/PaddlePaddle/Paddle/pull/46290#discussion_r976392010
    ./python/paddle/fluid/[!t]**,
    ./python/paddle/fluid/tra**
ignore =
    # E, see https://pycodestyle.pycqa.org/en/latest/intro.html#error-codes
    E121,E122,E123,E125,E126,E127,E128,E129,E131,
    E201,E202,E203,E225,E226,E228,E231,E241,E251,E261,E262,E265,E266,E271,E272,
    E301,E302,E303,E305,E306,
    E401,E402,
    E501,E502,
    E701,E711,E712,E713,E714,E721,E722,E731,E741,

    # F, see https://flake8.pycqa.org/en/latest/user/error-codes.html
    F401,F402,F403,F405,
    F522,F524,F541,
    F601,F631,F632,
    F811,F821,F841,

    # W, see https://pycodestyle.pycqa.org/en/latest/intro.html#error-codes
    W503,W504
    W601,W605
per-file-ignores =
    # These files need tabs for testing.
    python/paddle/fluid/tests/unittests/dygraph_to_static/test_error.py:E101,W191
    python/paddle/fluid/tests/unittests/collective/fleet/test_hdfs1.py:E101,W191