Python hang子手，取代字母？

Question

blanks如果猜中了，如何使我的python hangman游戏用正确的字母替换变量中的下划线。

我有正确的if语句，但不确定如何替换字母。

这是我尝试的：

def main()
    if choice in correctAnswer:
        print("\nCorrect!\n------...\n")

        index = 0
        while index < len(correctAnswer):
            index = correctAnswer.find(choice, index)
            if index == -1:
                break
            print(index)
            index += 1

        used.append(choice)

        places = []
        place=correctAnswer.index(choice)
        blanks[place]=choice
        blanks=''.join(blanks)
main()

那给我typeError： TypeError: 'str' object does not support item assignment

有关如何执行此操作的任何想法？

谢谢

更新：

blanks = list(makeBoard(correctAnswer))

print (correctAnswer)

def main():
    used = []
    print(blanks)
    choice = input("\nEnter a letter:")

    if len(choice) == 1 and special_match(choice) == True:

        if choice in correctAnswer:
            print("\nCorrect!\n--------------------------------------------------------------------\n")

            index = 0
            while index < len(correctAnswer):
                index = correctAnswer.find(choice, index)
                if index == -1:
                    break
                print(index)
                index += 1

            used.append(choice)

            [choice if letter == choice else blank for blank, letter in zip(blanks, correctAnswer)]

            main()

Answer 1

您最好使用列表，因为字符串是不可变的

>>> blanks = list('_______')
>>> answer = 'hangman'
>>> guess = 'g'

>>> blanks[answer.index(guess)] = guess
>>> blanks
['_', '_', '_', 'g', '_', '_', '_']

因此，这保持可blanks变性，因此您可以随意替换元素。然后，当您想以字符串形式显示给用户时

>>> ''.join(blanks)
'___g___'

列表理解可以处理重复的字母

>>> [guess if letter == guess else blank for blank, letter in zip(blanks, answer)]
['_', 'a', '_', '_', '_', 'a', '_']

编辑
请参阅以下快速演示，请注意您应添加对错误猜测的处理

answer = 'hangman'
blanks = list('_'*len(answer))
for guess in set('hangman'):
    blanks = [guess if letter == guess else blank for blank, letter in zip(blanks, answer)]
    print(''.join(blanks))

输出量

h______
h__g___
h__gm__
ha_gma_
hangman