Making a hangman code (I'm a n00b, still in the tutorial stage)

Anyway, here's my (top-secret) code:
Code:
def guess():
    choice=raw_input("Guess!(lowercase only please!)")
    if len(choice)>1:
        print "Don't cheat!"
        guess()
    elif guess in y:
        b[z.find(choice)]=choice
        print "Good Choice!"
        print ''.join(b)
...