Question

我在这里遇到一些代码有些问题。它的python，我在终端运行它。这是代码。

def inputPlayerLetter():
    print('Do you want to be X or O?')
    letter = input()
    if letter == "X":
        print "You are now X's, you will go first "
    Player = X
    Computer = O
    else:
        print "You are now O's you will go second"
    Player = O
    Computer = X

然而，当我在终端启动文件时，我得到了这个

HHNEs-MacBook-Pro-3:ttt hhneadmin$ python ttt.py
Do you want to be X or O?
X
You are now O's you will go second

HHNEs-MacBook-Pro-3:ttt hhneadmin$ !!
python ttt.py
Do you want to be X or O?
O
You are now O's you will go second

为什么说当我选择X时，我仍然得到应该是O时得到的响应。这可能是一个愚蠢的问题，但我是python的初学者，所以请帮助一起解释一下。

Answer 1

我认为这是你要做的事情：

def inputPlayerLetter():
    letter = raw_input('Do you want to be X or O? ')

    if letter == "X":
        print "You are now X's, you will go first"
        Player = 'X'
        Computer = 'O'
    else:
        print "You are now O's you will go second"
        Player = 'O'
        Computer = 'X'

inputPlayerLetter()

<强>输出

Do you want to be X or O? X
You are now X's, you will go first

您的代码存在问题player = X。由于X不是字符串，因此pyhton将其视为变量并查找X的定义。由于X未在任何地方定义，因此会引发异常。

Python输入if else语句帮助（在终端中）

1 个答案: