我是不是导入了什么错误的东西

Question

from random import shuffle

mylist = [' ','O',' ']

my_new_list = shuffle_list(mylist)

guess = player_guess

check_guess(my_new_list,guess)

def shuffle_list(list):
    shuffle(list)
    return list

def player_guess():
    
    guess = ''
    while guess not in ['0','1','2']:
        guess = input("pick a number: 0 , 1 , 2")
    return int(guess)

def check_guess(mylist,guess):
    if mylist[guess] == 'O':
        print("Correct!")
    else:
        print("Wrong guess!")
        print(mylist)

我收到这个错误

NameError                                 Traceback (most recent call last)
Input In [2], in <cell line: 5>()
      1 from random import shuffle
      3 mylist = [' ','O',' ']
----> 5 my_new_list = shuffle_list(mylist)
      7 guess = player_guess
      9 check_guess(my_new_list,guess)

NameError: name 'shuffle_list' is not defined

Answer 1

Python 从上到下读取脚本，所以当它到达您调用 shuffle_list 的行时 python 还不知道 shuffle_list 是什么，所以它抛出异常。您需要做的就是将带有函数调用的行移到底部。

from random import shuffle

mylist = [' ','O',' ']

def shuffle_list(list):
    shuffle(list)
    return list

def player_guess():
    
    guess = ''
    while guess not in ['0','1','2']:
        guess = input("pick a number: 0 , 1 , 2")
    return int(guess)

def check_guess(mylist,guess):
    if mylist[guess] == 'O':
        print("Correct!")
    else:
        print("Wrong guess!")
        print(mylist)

# All of the code below can't run until the functions have been defined 

my_new_list = shuffle_list(mylist)
guess = player_guess   # You probably want to call this e.g. player_guess()
check_guess(my_new_list,guess)

我是不是导入了什么错误的东西

Have I imported something wrong

python

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