Check the regexes of a file split by '"validation": '

check_regexes.py

import re

def sanitize(regex):
    if regex.startswith('r"'):
        regex = regex[2:]
    elif regex.startswith('"'):
        regex = regex[1:]
    if regex.endswith('"'):
        regex = regex[:-1]
    return regex

def compiles(regex):
    if 'EMAIL_RE' in regex:
        return True
    try:
        return bool(re.compile(regex))
    except re.error:
        return False
    return False


if __name__ == '__main__':
    with open('validations.txt', 'r') as f:
        lines = [line.strip(' ,\n').split('"validation": ') for line in f]
        for line in lines:
            regex = sanitize(line[1])
            if not compiles(regex):
                print(line[0], regex)