Generate pseudo-random passwords from a built in word list.

ps-random-pass.py

#!/usr/env python

'''
Author: Ben Hosmer
License: Unlicense http://unlicense.org/
Note: This is pseudo-random meaning don't rely on it for high-security!
'''

import random
import os
import sys
import linecache
import string

# The number of words to use from the list.
# Defaults to 2 if no value was given.
if len(sys.argv) > 1:
  numofwords = int(sys.argv[1])
else:
  numofwords = 2

platform = sys.platform

# OS X Default Word list
if platform == 'darwin':
  if os.path.exists('/usr/share/dict/words'):
    wordlist = '/usr/share/dict/words'
    #print 'Using OS X Wordlist... ' + wordlist
# Linux Word List
elif platform == 'linux2':
  if os.path.exists('/usr/share/dict/words'):
    wordlist = '/usr/share/dict/words'
    print 'linux wordlist found'

# Choose random words from the list to use.
with open(wordlist) as lines:
  words = []
  count = sum(1 for line in lines)
  for i in range(numofwords):
    words.append(linecache.getline(wordlist, random.randint(1, count)))

# Skip adding a special character to the first word, but add it to delimit
# each additional word.
words[1:] = [string.punctuation[random.randint(0, len(string.punctuation) -1)] + word for word in words[1:]] 

# Clean up the list removing newlines and squash them all together in a string.
print ''.join([str(item.replace('\n', '')) for item in words])