def index():

    words_list = read_file('seinfeld.txt')
    num_words = int(request.args.get('num_words', 10))
    chain = Markov(words_list)
    sampled_sentence = chain.create_sentence(num_words)
    return render_template('index.html',
                           random_sentence=sampled_sentence,
                           num_words=num_words)