gistfile1.txt

def probabilities_matrix(text):
	bigrams = {}
	for i in range(len(text)):
		try:
			if (text[i], text[i+1]) in bigrams:
				bigrams[(text[i], text[i+1])].append(text[i+2])
			else:
				bigrams[(text[i], text[i+1])] = [text[i+2]]
		except IndexError:
			return bigrams

def make_tweet(text):
	tweet = []
	get_start = random.choice(list(text.keys()))
	while not get_start[0].istitle():
		get_start = random.choice(list(text.keys()))
	for word in get_start:
		tweet.append(word)
	while not tweet[-1].endswith("."):
		random_word = random.randint(0, len(text[(tweet[-2], tweet[-1])])-1)
		tweet.append(text[(tweet[-2], tweet[-1])][random_word])
	return " ".join(tweet)