fix_urlpatterns.py

import re
import sys


def finder(sourcelines):
    result = []

    inside = False
    for line in sourcelines:
        match = re.match(r"""(\w+) = patterns\(""", line)
        if match:
            inside = True
            name = match.groups()[0]
            result.append('{} = ['.format(name))
        elif inside and re.match(r'\s*\)', line):
            result.append(']')
            inside = False
        elif inside and re.match(r"""\s*(''|""),""", line):
            pass
        elif line == 'from django.conf.urls import patterns, url':
            result.append('from django.conf.urls import url')
        else:
            result.append(line)
    if inside:
        result.append('qqDS')  # find and fix manually
    return result


def main():
    filename = sys.argv[1]

    with open(filename) as handle:
        source = handle.read()

    sourcelines = source.splitlines()

    with open(filename, 'w') as handle:
        handle.write('\n'.join(finder(sourcelines)) + '\n')


if __name__ == '__main__':
    main()