xkcd_pass.py

import Crypto.Random.random as pycryptrand
import sys

def random_line(afile):
  line = next(afile)
	for num, aline in enumerate(afile):
		if pycryptrand.randrange(num + 2): 
			continue
    	line = aline
	return line

f = open("wordlist", "r")
lines = f.readlines()

password = ""
for i in range(0, int(sys.argv[1])):
	password += pycryptrand.choice(lines)

password = password.replace("\n", " ")
password = password.replace("\r", "")

password = password.lower()
print password