def create_passphrase(bits_of_entropy=None, num_words=None,
                      language='english', word_source='wiktionary'):
    wordlist = get_wordlist(language, word_source)

    if not num_words:
        if not bits_of_entropy:
            bits_of_entropy = 80
        num_words = get_num_words_with_entropy(bits_of_entropy, wordlist)

    return ' '.join(pick_random_words_from_wordlist(wordlist, num_words))
Creates a passphrase that has a certain number of bits of entropy OR
dataset/ETHPy150Open blockstack/pybitcoin/pybitcoin/passphrases/passphrase.py/create_passphrase