secret_gen.py

from __future__ import print_function
import random
import string
import sys


def gen_secret(secret_size):
    secret = ""
    invalid_chars = [' ','\n','\t','\r','\x0b','\x0c','"','\'','`','\\']
    for i in range(0, secret_size):
        c = ''
        while True:
            c = string.printable[random.randrange(0,len(string.printable))]
            if c not in invalid_chars:
                break
        secret += c
    return secret

if __name__ == "__main__":
    try:
        value = int(sys.argv[1])
        print(gen_secret(value))
    except:
        print(gen_secret(256))