myrandom.py

#!/usr/bin/python

import sys
import random
import string

def random_string(length):
    pool = string.letters + string.digits
    return (''.join(random.choice(pool) for i in xrange(length))).lower()

def main():
    # print command line arguments
    for arg in sys.argv[1:]:
        print arg

    print random_string(int(arg))

if __name__ == "__main__":
    main()