MOOC：计算机科学及Python编程导论

Study : Introduction to Computer Science and Programming Using Python

Problem Set 3 hangman：

# 6.00 Problem Set 3# # Hangman game## -----------------------------------# Helper code# You don't need to understand this helper code,# but you will have to know how to use the functions# (so be sure to read the docstrings!)import randomimport stringWORDLIST_FILENAME = "C:/Users/y50/6.00.1x Files/words.txt"def loadWords():    """    Returns a list of valid words. Words are strings of lowercase letters.    Depending on the size of the word list, this function may    take a while to finish.    """    print "Loading word list from file..."    # inFile: file    inFile = open(WORDLIST_FILENAME, 'r', 0)    # line: string    line = inFile.readline()    # wordlist: list of strings    wordlist = string.split(line)    print "  ", len(wordlist), "words loaded."    return wordlistdef chooseWord(wordlist):    """    wordlist (list): list of words (strings)    Returns a word from wordlist at random    """    return random.choice(wordlist)# end of helper code# -----------------------------------# Load the list of words into the variable wordlist# so that it can be accessed from anywhere in the programwordlist = loadWords()def isWordGuessed(secretWord, lettersGuessed):    '''    secretWord: string, the word the user is guessing    lettersGuessed: list, what letters have been guessed so far    returns: boolean, True if all the letters of secretWord are in lettersGuessed;      False otherwise    '''    # FILL IN YOUR CODE HERE...    i=0    n=0    copy=[]    num=range(len(secretWord))    for letter in secretWord:        copy.append(letter)        while i<len(lettersGuessed):        count=0        if lettersGuessed[i] in secretWord:            for letter in copy:                if letter==lettersGuessed[i]:                    count+=1            num.remove(copy.index(lettersGuessed[i]))            if count>1:                while n<(count-1):                       copy[copy.index(lettersGuessed[i])]=0                    num.remove(copy.index(lettersGuessed[i]))                    n+=1        i+=1        if num==[]:            return True       return Falsedef getGuessedWord(secretWord, lettersGuessed):    '''    secretWord: string, the word the user is guessing    lettersGuessed: list, what letters have been guessed so far    returns: string, comprised of letters and underscores that represents      what letters in secretWord have been guessed so far.>>> secretWord = 'apple' >>> lettersGuessed = ['e', 'i', 'k', 'p', 'r', 's']>>> print getGuessedWord(secretWord, lettersGuessed)'_ pp_ e'    '''    # FILL IN YOUR CODE HERE...    i=0    n=0    copy=[]    copy1=['_ ']*len(secretWord)    for letter in secretWord:        copy.append(letter)        while i<len(lettersGuessed):        count=0        if lettersGuessed[i] in secretWord:            for letter in copy:                if letter==lettersGuessed[i]:                    count+=1            if count==1:                copy1[copy.index(lettersGuessed[i])]=lettersGuessed[i]            elif count>1:                while n<count:                     copy1[copy.index(lettersGuessed[i])]=lettersGuessed[i]                    copy[copy.index(lettersGuessed[i])]=0                    n+=1        i+=1        if copy1==copy:            a=''.join(copy1)            return a    a=''.join(copy1)    return adef getAvailableLetters(lettersGuessed):    '''    lettersGuessed: list, what letters have been guessed so far    returns: string, comprised of letters that represents what letters have not      yet been guessed.    '''    # FILL IN YOUR CODE HERE...    allletter=string.ascii_lowercase    copy=[]    for letter in allletter:        copy.append(letter)    for letter in lettersGuessed:        copy.remove(letter)    availableletters=''.join(copy)    return availablelettersdef hangman(secretWord):    '''    secretWord: string, the secret word to guess.    Starts up an interactive game of Hangman.    * At the start of the game, let the user know how many       letters the secretWord contains.    * Ask the user to supply one guess (i.e. letter) per round.    * The user should receive feedback immediately after each guess       about whether their guess appears in the computers word.    * After each round, you should also display to the user the       partially guessed word so far, as well as letters that the       user has not yet guessed.    Follows the other limitations detailed in the problem write-up.    '''    # FILL IN YOUR CODE HERE...    lettersGuessed=[]    mistakesMade=0    maxguess=8    print('Welcome to the game, Hangman!')    print('I am thinking of a word that is '+str(len(secretWord))+' letters long.')    while mistakesMade<maxguess:        print('You have '+str(maxguess-mistakesMade)+' guesses left.')        print('Available letters: '+getAvailableLetters(lettersGuessed))        guess=raw_input('Please guess a letter: ')        guessInLowerCase = guess.lower()        if guessInLowerCase in lettersGuessed:            print("Oops! You've already guessed that letter: "+getGuessedWord(secretWord, lettersGuessed))        else:            lettersGuessed.append(guessInLowerCase)            if guessInLowerCase in secretWord:                print("Good guess: " +getGuessedWord(secretWord, lettersGuessed))                if isWordGuessed(secretWord, lettersGuessed):                    break            else:                print("Oops! That letter is not in my word: " +getGuessedWord(secretWord, lettersGuessed))                mistakesMade+=1    if isWordGuessed(secretWord, lettersGuessed):        print('Congratulations, you won!')    else:        print('Sorry, you ran out of guesses. The word was else. ')        print('The word was: '+secretWord)# When you've completed your hangman function, uncomment these two lines# and run this file to test! (hint: you might want to pick your own# secretWord while you're testing)# secretWord = chooseWord(wordlist).lower()# hangman(secretWord)def game():    hangman(chooseWord(wordlist))