#!/usr/bin/env python3
from string import (
    ascii_lowercase,
    ascii_uppercase,
    digits,
    punctuation
)
from secrets import choice


OPTIONS = {ascii_lowercase, ascii_uppercase, digits, punctuation}
NUMBER_OF_CHARS = 64
current = None


def next():
    global current
    current = choice(tuple(OPTIONS - {current}))
    return choice(current)


def genpass_fips(n=NUMBER_OF_CHARS):
    return ''.join(next() for i in range(0, n))


if __name__ == '__main__':
    pick_from = 4096
    print(choice([genpass_fips() for i in range(0, pick_from)]))