import random

WORDS = ( "rensselaer", "python", "jumble", "blah blah blah" )
MAX_WRONG = 6

def replace(guess):
  """replace guess in the given puzzle"""
  new_puzzle = ""
  for i in range(len(word)):
    if guess == word[i]:
      new_puzzle += guess
    else:
      new_puzzle += puzzle[i]
  return new_puzzle

import random
word = random.choice(WORDS)

puzzle = "-" * len(word)
puzzle = replace(" ")
guesses = []
wrong_guesses = 0

while puzzle != word and wrong_guesses < MAX_WRONG:
  print "Puzzle:", puzzle
  if guesses:
    print "Guessed letters:", guesses

  guess = raw_input("====> ")
  guess = guess.lower()

  while len(guess) != 1 or guess in guesses or not guess.isalpha():
    guess = raw_input("====> ")
    guess = guess.lower()

  guesses.append(guess)
  guesses.sort()

  if guess in word:
    print guess, "is in the puzzle!"
    puzzle = replace(guess)
  else:
    print guess, "is not in the puzzle"
    wrong_guesses += 1


if wrong_guesses == MAX_WRONG:
  print "You've been hanged!"
else:
  print "You got it!"

print "The word was", word