替换 python 中字符串中的字符

Question

我正在尝试编写一个允许用户玩刽子手的程序。如果用户猜了某个字母，比如 'p'，我想在正确的索引处替换 'word' 中的下划线。我不确定如何用正确猜到的字母替换下划线。感谢您的帮助！

例如

secretWord='apple'
word='_ _ _ _ _'
#user guesses 'p'
#word='_ p p _ _' (how word changes when the correct letters are guessed)

Answer 1

看起来你想要这样的东西：

secret_word = 'apple'
display_word = "_" * len(secret_word)
guesses = 'p'

new_word = ""
for secret_char, display_char in zip(secret_word, display_word):
    if secret_char == guesses:
        new_word += secret_char
    else:
        new_word += display_char
display_word = new_word


print(display_word)

或者作为列表理解（可读性稍差）：

secret_word = 'apple'
display_word = "_" * len(secret_word)
guess = 'p'

display_word = ''.join([secret_char if secret_char == guess else display_char for secret_char, display_char in zip(secret_word, display_word)])

print(display_word)

替换 python 中字符串中的字符

replace character in string in python

python

string

str-replace

python-3.x