Password generator

password_generator.py

#!/usr/bin/env python3

import math
import random
from string import digits, ascii_letters, punctuation
import sys

char_set = digits + ascii_letters + punctuation + ' '


def make_password(char_num=8, char_limit=1):
    """Make a password of length char_num that consists of random characters in char_set variable."""
    if char_num > len(char_set) * char_limit:
        char_limit = math.ceil(char_num / len(char_set))
    password = []
    while len(password) < char_num:
        j = random.choice(char_set)
        if password.count(j) < char_limit:
            password.append(j)
    return ''.join(password)

if __name__ == '__main__':
    argv = [int(i) for i in sys.argv[1:3]]
    print(make_password(*argv))