Python module designed to raise errors from various flake8 plugins

flake8_ext_test.py

"""Source file with intentionally broken flake8 things.

Meant to test that various flake8 extensions are correctly installed.
Does NOT rigorously test all errors for all packages!

If you would like an addin or specific error added to this module,
please let me know on Twitter @btskinn.

Invoke with `flake8 --max-complexity 1 flake8_ext_test.py`;
this file should raise AT LEAST the following:

(core flake8)
flake8/pyflakes         F401, W293
pycodestyle             E501
mccabe                  C901

(extensions)
flake8-2020             YTT303
flake8-bandit           S110
flake8-black            BLK100
flake8-bugbear          B006
flake8-builtins         A002
flake8-comprehensions   C400
flake8-docstrings       D103
flake8-eradicate        E800
flake8-import-order     I100
flake8-pie              PIE781
flake8-rst-docstrings   RST212
pep8-naming             N802

Copyright (c) Brian Skinn, 2019
MIT License

"""


# E501 (pycodestyle) -- Line too long
"This is a really long string. ------------------------------------------------------------------------------------------------"


# E800 (flake8-eradicate) -- Commented-out code
# F401 (flake8/pyflakes) -- Unused import
# I100 (flake8-import-order) -- Import statements are in the wrong order
import csv
import argparse
# import subprocess
import sys


# A002 (flake8-builtins) -- "list" argument shadows a builtin
# B006 (flake8-bugbear) -- No mutable defaults
# D103 (flake8-docstrings) -- Missing docstring in public function
# E121 (pycodestyle) -- Under-indented continuation line
# N802 (pep8-naming) -- Function name should be lowercase
# BLK100 (flake8-black) -- black would make changes
# PIE781 (flake8-pie) -- Assigning to a variable and returning
# YTT303 (flake8-2020) -- sys.version[:1] referenced (python10), use sys.version_info
def BadFunc(
    list=[]
 ):
    if sys.version[:1] == 3:
        pass
    x = 5
    return x


# C400 (flake8-comprehensions) -- Unnecessary generator; rewrite as list comprehension
# C901 (mccabe) -- 'docstring_func' too complex (for max-complexity 1, at least)
# S110 (flake8-bandit) -- try/except/pass
# W293 (flake8/pyflakes) -- Blank line contains whitespace
# RST212 (flake8-rst-docstrings) -- Title underline too short
def docstring_func():
    """Provide a docstring with a RST error.
    
    Bad Title
    -----

    """
    try:
        raise TypeError()
    except Exception:
        pass
    
    for x in list(_ for _ in range(5)):
        print(x)