Password policy says eg. pass must contain 3 chr set from 4

rockyou_subset_rules.py

import re


rules = (
    re.compile('[a-z]'),
    re.compile('[A-Z]'),
    re.compile('[1-9]'),
    re.compile('[\!\+\-\@\.]'),  
)


with open('wordlists/rockyou.txt', 'r') as f:
    for l in f:
        pw = l[:-1]

        if sum([r.search(pw) and 1 or 0 for r in rules]) > 2:
            print pw