pre-commit-pep8.py

#!/usr/bin/env python
"""pre-commit-pep8.py
requirements

 - pep8==1.3.3

in .git/hooks/pre-commit

    #!/bin/sh
    ./path/to/this/script/in/your/repo/pre-commit-pep8.py

"""
import re
import sys
import commands


ignores = ('E501', )


def main():
    has_errors = False

    for f in commands.getoutput('git diff --cached --name-only').split():
        f = f.strip()
        if not re.search("\.py$", f):
            continue

        command = 'pep8 --ignore={codes} {0}'.format(f, codes=','.join(ignores))
        status, output = commands.getstatusoutput(command)

        if status != 0:
            has_errors = True
            print output

    if has_errors:
        print '--'
        print 'Fix these pep8 errors before committing.'
        sys.exit(1)


if __name__ == '__main__':
    main()