Generate a random string to std out of a specficied size

randomString.py

# Generates a random string of length k to std out

import argparse
import string
import random

def id_generator(size, chars=string.ascii_uppercase \
                                + string.digits \
                                + string.ascii_lowercase):
    return ''.join(random.choice(chars) for _ in range(size))

parser = argparse.ArgumentParser(description='Generate a random string of length k')
parser.add_argument('size',
                    help='size',
                    type=int)

args = parser.parse_args()

print id_generator(size=args.size)