Random MD5 Python script

random_md5.py

#!/usr/bin/env python

# Prints an MD5 hash from a random string.

# Helpful resources: 
#   http://stackoverflow.com/questions/785058/random-strings-in-python-2-6-is-this-ok
#   http://docs.python.org/library/hashlib.html

import random, string, hashlib, argparse, sys

parser = argparse.ArgumentParser(description='Generates a random string, hashes it with MD5 and outputs it.')
parser.add_argument('-s', '--slug', action='store_true', default=False, help='show a slug (first 6 characters of the hash, GitHub-style)')
parser.add_argument('-c', '--no-newline', action='store_true', default=False, help='remove newline (only if one hash requested)')
parser.add_argument('-n', '--number', action='store', type=int, default=1, help='number of hashes to show')
                   
def random_md5(string_length=25, slug=False, number=1):
  hashes = []
  for n in range(number):
    r = ''.join(random.choice(string.letters + string.digits) for i in xrange(string_length))
    m = hashlib.md5()
    m.update(r)
    if slug == True:
      hashes.append(m.hexdigest()[:6])
    else:
      hashes.append(m.hexdigest())
  return hashes

if __name__ == '__main__':
  arguments = parser.parse_args()
  hashes = random_md5(slug=arguments.slug, number=arguments.number)
  if (arguments.number == 1 and arguments.no_newline == True):
    sys.stdout.write(hashes[0])
  else:
    for hash in hashes:
      print hash