Flake8

SYNOPSIS

flake8 [options] [<path> <path> ...]

flake8 --help

DESCRIPTION

flake8 是一个命令行实用程序，用于在Python项目之间实施样式一致性。默认情况下，它包括PyFlakes项目提供的lint检查、PyCodeStyle项目提供的PEP-0008启发的样式检查以及McCabe项目提供的McCabe复杂性检查。如果找到并安装了第三方扩展，它还将运行这些扩展。

OPTIONS

需要注意的是，第三方扩展可能会添加此处未表示的选项。要查看安装中的所有可用选项，请运行：

flake8 --help

从8.3.1.0开始提供的所有选项：

--version             show program's version number and exit
-h, --help            show this help message and exit
-v, --verbose         Print more information about what is happening in
                      flake8. This option is repeatable and will increase
                      verbosity each time it is repeated.
-q, --quiet           Report only file names, or nothing. This option is
                      repeatable.
--count               Print total number of errors and warnings to standard
                      error and set the exit code to 1 if total is not
                      empty.
--diff                Report changes only within line number ranges in the
                      unified diff provided on standard in by the user.
--exclude=patterns    Comma-separated list of files or directories to
                      exclude. (Default:
                      .svn,CVS,.bzr,.hg,.git,__pycache__,.tox,.eggs,*.egg)
--filename=patterns   Only check for filenames matching the patterns in this
                      comma-separated list. (Default: *.py)
--stdin-display-name=STDIN_DISPLAY_NAME
                      The name used when reporting errors from code passed
                      via stdin. This is useful for editors piping the file
                      contents to flake8. (Default: stdin)
--format=format       Format errors according to the chosen formatter.
--hang-closing        Hang closing bracket instead of matching indentation
                      of opening bracket's line.
--ignore=errors       Comma-separated list of errors and warnings to ignore
                      (or skip). For example, ``--ignore=E4,E51,W234``.
                      (Default: E121,E123,E126,E226,E24,E704,W503,W504)
--max-line-length=n   Maximum allowed line length for the entirety of this
                      run. (Default: 79)
--select=errors       Comma-separated list of errors and warnings to enable.
                      For example, ``--select=E4,E51,W234``. (Default:
                      E,F,W,C90)
--disable-noqa        Disable the effect of "# noqa". This will report
                      errors on lines with "# noqa" at the end.
--show-source         Show the source generate each error or warning.
--statistics          Count errors and warnings.
--enable-extensions=ENABLE_EXTENSIONS
                      Enable plugins and extensions that are otherwise
                      disabled by default
--exit-zero           Exit with status code "0" even if there are errors.
--install-hook=INSTALL_HOOK
                      Install a hook that is run prior to a commit for the
                      supported version control system.
-j JOBS, --jobs=JOBS  Number of subprocesses to use to run checks in
                      parallel. This is ignored on Windows. The default,
                      "auto", will auto-detect the number of processors
                      available to use. (Default: auto)
--output-file=OUTPUT_FILE
                      Redirect report to a file.
--tee                 Write to stdout and output-file.
--append-config=APPEND_CONFIG
                      Provide extra config files to parse in addition to the
                      files found by Flake8 by default. These files are the
                      last ones read and so they take the highest precedence
                      when multiple files provide the same option.
--config=CONFIG       Path to the config file that will be the authoritative
                      config source. This will cause Flake8 to ignore all
                      other configuration files.
--isolated            Ignore all configuration files.
--benchmark           Print benchmark information about this run of Flake8
--bug-report          Print information necessary when preparing a bug
                      report
--builtins=BUILTINS   define more built-ins, comma separated
--doctests            check syntax of the doctests
--include-in-doctest=INCLUDE_IN_DOCTEST
                      Run doctests only on these files
--exclude-from-doctest=EXCLUDE_FROM_DOCTEST
                      Skip these files when running doctests
--max-complexity=MAX_COMPLEXITY
                      McCabe complexity threshold

EXAMPLES

只需对当前目录运行flake8:：

flake8
flake8 .

针对特定路径运行flake8:：

flake8 path/to/file.py

忽略flake8中的冲突：

flake8 --ignore E101
flake8 --ignore E1,E202

只报告某些违规行为：

flake8 --select E101
flake8 --select E2,E742

仅分析差异：

git diff -U0 | flake8 --diff -

生成错误报告的信息：

flake8 --bug-report

BUGS

请将所有错误报告给https://gitlab.com/pycqa/flake8