the hangman game. Exercise 30 from practicepython.org

hangman.py

#!/usr/bin/python3.5

import random
def pickWord():
	with open('hang_words.txt', 'r') as f:
		x = random.randint(0, 267750)
		# print x
		for i in range(267750):
			line = f.readline()
			if x==i:
				return line.strip('\n');

word = pickWord()
guess = ['_' for i in range(len(word))]
triedLetters = []
tries = 6

print(' '.join(guess))
while tries > 0:
	letter = input('enter your letter: ').upper()
	while len(letter) > 1 or len(letter) == 0:
		letter = input('Please enter only one letter: ').upper()
	if letter in triedLetters:
		print('this letter is used before')
	elif letter in word:
		i = 0
		for l in word:
			if l == letter:
				guess[i] = letter
			elif l in guess:
				guess[i] = guess[i]
			else:
				guess[i] = '_'
			i += 1
		print(''.join(guess))
		if '_' not in guess:
			print('you won!')
			break;
	else:
		print('incorrect!')
		tries -= 1
		if tries != 0:
			print('you have', tries, 'left')
		else:
			print('you lost! the word was :', word)
	triedLetters.append(letter)