MoritzS

from itertools import islice
import math


def lcm(a, b):
    return a * b // math.gcd(a, b)


def iter_pack(iterable, n):
    iterable = iter(iterable)

MoritzS

import math
import random


class Generator(object):
    def __init__(self, str_len, alphabet, secret, initial_state=None):
        self._str_len = str_len
        self._alphabet = list(alphabet)
        alpha_len = len(self._alphabet)
        if alpha_len & (alpha_len - 1) > 0:

MoritzS

from itertools import islice

MAPPING = {}
# 0-25: a-z
for i in range(26):
    MAPPING[i] = chr(ord('a') + i)

# 26-51: A-Z
for i in range(26):
    MAPPING[26 + i] = chr(ord('A') + i)