random-xkcd-password.py

#!/usr/bin/env python
# Based on https://m.xkcd.com/936/
import random

dict_file = open('/usr/share/dict/words', 'r') # substitute with the path your /etc/dict/words equivalent
word_list = [x.rstrip('\n') for x in dict_file.readlines()]

capitalise_first_letter = True
capitalise_first_word = False
joiner_character = "-"

while True:
    # We use ValueError and KeyboardInterrupt exceptions to break from this neverending loop.
    try:
        num_words = int(input("How many words to use for your password? ")) # Ctrl-C or non-numeric input to break out
        words_in_sample = random.sample(word_list, num_words)
        if capitalise_first_word:
            words_in_sample[0] = words_in_sample[0].capitalize()
        if capitalise_first_letter:
            for i in range(0,len(words_in_sample[1:])):
                words_in_sample[i+1] = words_in_sample[i+1].capitalize()
        print(joiner_character.join(words_in_sample))
    except ValueError as e:
        break
    except KeyboardInterrupt as e:
        break