下边代码段是关于一个Python编写的简单hangman游戏的代码。

!/usr/bin/env python

import random

import cPickle

class Hangman(object):

'''A simple hangman game that tries to improve your vocabulary a bit '''

def init(self):

# the variables used, this is not necessary

self.dumpfile = '' #the dictionary file

self.dictionary = {} #the pickled dict

self.words = [] #list of words used

self.secret_word = '' #the 'key'

self.length = 0 #length of the 'key'

self.keys = [] #inputs that match the 'key'

self.used_keys = [] #keys that are already used

self.guess = '' #player's guess

self.mistakes = 0 #number of incorrect inputs

    return self.load_dict()
    
#insert some random hints for the player
def insert_random(self, length):
    randint = random.randint
    
    # 3 hints
    if length >= 7: hint = 3
    else: hint = 1
    for x in xrange(hint):
            a = randint(1, length - 1)
            self.keys[a-1] = self.secret_word[a-1]
def test_input(self):
    #if the guessed letter matches
    if self.guess in self.secret_word:
        indexes = [i for i, item in enumerate(self.secret_word) if item == self.guess]
        for index in indexes:
            self.keys[index] = self.guess
            self.used_keys.append(self.guess)
            print "used letters ",set(self.used_keys),'n'
   
    #if the guessed letter didn't match
    else:
        self.used_keys.append(self.guess)
        self.mistakes += 1
        print "used letters ",set(self.used_keys),'n'

# load the pickled word dictionary and unpickle them    
def load_dict(self):
    try :
        self.dumpfile = open("~/python/hangman/wordsdict.pkl", "r")
    except IOError:
        print "Couldn't find the file 'wordsdict.pkl'"
        quit()
    self.dictionary = cPickle.load(self.dumpfile)
    self.words = self.dictionary.keys()
    self.dumpfile.close()
    return self.prepare_word()

#randomly choose a word for the challenge
def prepare_word(self):
    
    self.secret_word = random.choice(self.words)
    #don't count trailing spaces
    self.length = len(self.secret_word.rstrip())
    self.keys = ['_' for x in xrange(self.length)]
    self.insert_random(self.length)
    return self.ask()
#display the challenge
def ask(self):
    print ' '.join(self.keys), ":", self.dictionary[self.secret_word] 
    print 
    return self.input_loop()
#take input from the player
def input_loop(self):
    #four self.mistakes are allowed
    chances = len(set(self.secret_word)) + 4          
    while chances != 0 and self.mistakes < 5:
        try:
            self.guess = raw_input("> ")
            
        except EOFError:
            exit(1)
        self.test_input()
        print ' '.join(self.keys)
        if '_' not in self.keys:
            print 'well done!'
            break
        chances -= 1
   
    if self.mistakes > 4: print 'the word was', ''.join(self.secret_word).upper()
    return self.quit_message()

def quit_message(self):
    print "n"
    print "Press 'c' to continue, or any other key to quit the game. "
    print "You can always quit the game by pressing 'Ctrl+D'"
    try:
        command = raw_input('> ')
        if command == 'c': return self.__init__() #loopback
        else : exit(0)
    except EOFError: exit(1)


if name == 'main':

game = Hangman()

game.init()


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