/usr/lib/python3/dist-packages/flake8/main.py is in python3-flake8 2.1.0-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | # -*- coding: utf-8 -*-
import os
import sys
import setuptools
from flake8.engine import get_parser, get_style_guide
from flake8.util import is_flag, flag_on
if sys.platform.startswith('win'):
DEFAULT_CONFIG = os.path.expanduser(r'~\.flake8')
else:
DEFAULT_CONFIG = os.path.join(
os.getenv('XDG_CONFIG_HOME') or os.path.expanduser('~/.config'),
'flake8'
)
EXTRA_IGNORE = ['.tox']
def main():
"""Parse options and run checks on Python source."""
# Prepare
flake8_style = get_style_guide(parse_argv=True, config_file=DEFAULT_CONFIG)
options = flake8_style.options
if options.install_hook:
from flake8.hooks import install_hook
install_hook()
# Run the checkers
report = flake8_style.check_files()
exit_code = print_report(report, flake8_style)
raise SystemExit(exit_code > 0)
def print_report(report, flake8_style):
# Print the final report
options = flake8_style.options
if options.statistics:
report.print_statistics()
if options.benchmark:
report.print_benchmark()
if report.total_errors:
if options.count:
sys.stderr.write(str(report.total_errors) + '\n')
if not options.exit_zero:
return 1
return 0
def check_file(path, ignore=(), complexity=-1):
"""Checks a file using pep8 and pyflakes by default and mccabe
optionally.
:param str path: path to the file to be checked
:param tuple ignore: (optional), error and warning codes to be ignored
:param int complexity: (optional), enables the mccabe check for values > 0
"""
ignore = set(ignore).union(EXTRA_IGNORE)
flake8_style = get_style_guide(
config_file=DEFAULT_CONFIG, ignore=ignore, max_complexity=complexity)
return flake8_style.input_file(path)
def check_code(code, ignore=(), complexity=-1):
"""Checks code using pep8 and pyflakes by default and mccabe optionally.
:param str code: code to be checked
:param tuple ignore: (optional), error and warning codes to be ignored
:param int complexity: (optional), enables the mccabe check for values > 0
"""
ignore = set(ignore).union(EXTRA_IGNORE)
flake8_style = get_style_guide(
config_file=DEFAULT_CONFIG, ignore=ignore, max_complexity=complexity)
return flake8_style.input_file(None, lines=code.splitlines(True))
class Flake8Command(setuptools.Command):
"""The :class:`Flake8Command` class is used by setuptools to perform
checks on registered modules.
"""
description = "Run flake8 on modules registered in setuptools"
user_options = []
def initialize_options(self):
self.option_to_cmds = {}
parser = get_parser()[0]
for opt in parser.option_list:
cmd_name = opt._long_opts[0][2:]
option_name = cmd_name.replace('-', '_')
self.option_to_cmds[option_name] = cmd_name
setattr(self, option_name, None)
def finalize_options(self):
self.options_dict = {}
for (option_name, cmd_name) in self.option_to_cmds.items():
if option_name in ['help', 'verbose']:
continue
value = getattr(self, option_name)
if value is None:
continue
if is_flag(value):
value = flag_on(value)
self.options_dict[option_name] = value
def distribution_files(self):
if self.distribution.packages:
package_dirs = self.distribution.package_dir or {}
for package in self.distribution.packages:
pkg_dir = package
if package in package_dirs:
pkg_dir = package_dirs[package]
elif '' in package_dirs:
pkg_dir = package_dirs[''] + os.path.sep + pkg_dir
yield pkg_dir.replace('.', os.path.sep)
if self.distribution.py_modules:
for filename in self.distribution.py_modules:
yield "%s.py" % filename
def run(self):
flake8_style = get_style_guide(config_file=DEFAULT_CONFIG,
**self.options_dict)
paths = self.distribution_files()
report = flake8_style.check_files(paths)
exit_code = print_report(report, flake8_style)
raise SystemExit(exit_code > 0)
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