Git Pre-commit Hook For Python now with extra Python!

pre-commit

#!/usr/bin/env python
#-*- mode: python -*-

from subprocess import Popen, PIPE
import sys

syntax_checker = "pyflakes"

def run(command):
    p = Popen(command.split(), stdout=PIPE, stderr=PIPE)
    p.wait()
    return p.returncode, p.stdout.read(), p.stderr.read()

_, files_modified, _= run("git diff-index --name-only HEAD")
file_modified = filed_modified.strip().split()

for fname in files_modified:
    if fname.endswith(".py"):
        print >>sys.stderr, "Checking syntax on %s: ... "%(fname,),
        exit_code, _, errors = run("%s %s"%(syntax_checker, fname))
        if exit_code != 0:
            print >>sys.stderr, "\rChecking syntax on %s: FAILED! \n%s"%(fname, errors)
            sys.exit(exit_code)
        else:
            print >>sys.stderr, "\rChecking syntax on %s: OK!"%(fname,)