python full dictionary to bip39 word list

dictionary_to_bip39.py

from urllib.request import urlopen
from hashlib import sha256
from os.path import expanduser
def main():

    seed_words_url = 'https://raw.githubusercontent.com/bitcoin/bips/master/bip-0039/english.txt'
    seed_words_file = urlopen(seed_words_url)
    seed_words = seed_words_file.read().decode("utf8").split("\n")
    seed_words_count = len(seed_words)

    dictionary_words_url = 'https://raw.githubusercontent.com/dwyl/english-words/master/words_alpha.txt'
    dictionary_words_file = urlopen(dictionary_words_url)
    dictionary_words = dictionary_words_file.read().decode("utf8").split("\n")

    freq = [0] * seed_words_count

    output_file = open(expanduser("~") + '\output.csv', 'w')

    for dictionary_word in dictionary_words:
        dictionary_word = dictionary_word.replace('\r','')
        sha = sha256()
        sha.update(dictionary_word.encode('utf-8'))
        sha.hexdigest()
        seed_word_idx = int(sha.hexdigest(), 16) % seed_words_count
        output_file.write(dictionary_word + ',' + seed_words[seed_word_idx] + '\n')
        freq[seed_word_idx] = freq[seed_word_idx] + 1

    freq_str = [str(f) for f in freq]
    output_file.write("\n" + ",".join(freq_str))
    output_file.close()

if __name__ == "__main__": main()