pwdgen.py

#!/usr/bin/python3
# -*- coding:utf-8 -*-
# filename: pwdgen.py
import sys
import string

def main():
    if len(sys.argv) > 1:
        l = int(sys.argv[1])
    else:
        l = 16
    if len(sys.argv) > 2:
        q = int(sys.argv[2])
    else:
        q = 1

    op = string.ascii_letters + string.digits
    ol = len(op)
    for i in range(q):
        with open('/dev/urandom', 'rb') as fi:
            xs = fi.read(l)
        a = ''
        for x in xs:
            a += op[x * ol // 256]
        print(a)

if __name__ == "__main__":
    main()