输出不打印，并且没有用 '' 括起来

Question

def isWordGuessed(secretWord, lettersGuessed):
    for char in secretWord:

        if char not in lettersGuessed:
            print('_',end=' ')
        else:
            print(char,end=' ')

print(isWordGuessed('apple', ['e', 'i', 'k', 'p', 'r', 's']))

The output is _pp_eNone

I want my output to be _pp_e while still using the print function to call the function.

What should I do?

Answer 1

You can simply modify this to:

def isWordGuessed(secretWord, lettersGuessed):
     for char in secretWord:
         if char not in lettersGuessed:
             print("_", end="")
         else:
             print(char, end="")
     return ""

print(isWordGuessed('apple', ['e', 'i', 'k', 'p', 'r', 's']))

The None is the implicit return value after you have looped through your for loop.

Answer 2

Since your function isWordGuessed doesnt have any return keyword, the statement

isWordGuessed('apple', ['e', 'i', 'k', 'p', 'r', 's']) will return None .

Now that is called inside a print method, so None will be returned to print function and it will be printed.

The reason of it occurring at the end of the secretWord is due to usage of end parameter in your print statement inside the isWordGuessed

PS In python, variable names should be lowercase letters separated by underscores. Refer this