我在错误时使用吗（Python）

发布于 2025-01-24 10:32:08 字数 560 浏览 3 评论 0原文

我正在尝试让用户输入正确的名称，但是当我运行时，即使我进入Jayson Tatum，也一直要求我重写，但是当我写Lebron James时，它可以正常工作吗？感谢您的检查这是代码

while favPlayer != 'lebron james' and 'jayson tatum':

    favPlayer = str.lower(input('Favorite player on the list (Lebron James, Jayson Tatum): '))

if favPlayer == 'jayson tatum':

    position = 'Small Forward'

    print('Your position is Small Forward')

elif favPlayer == 'lebron james':

    position = 'Power Forward'

    print('Your position is Power Forward')

以下是运行： [在这里输入图像描述] [1] [1]：https：//i.sstatic.net/9bem2.png

原文

I'm trying to get the user to input the right name, but when I run it keeps asking me to rewrite even when I entered jayson tatum, but when I wrote lebron james it works? Thanks for your inspections
Here's the code

while favPlayer != 'lebron james' and 'jayson tatum':

    favPlayer = str.lower(input('Favorite player on the list (Lebron James, Jayson Tatum): '))

if favPlayer == 'jayson tatum':

    position = 'Small Forward'

    print('Your position is Small Forward')

elif favPlayer == 'lebron james':

    position = 'Power Forward'

    print('Your position is Power Forward')

Here's the run:
[enter image description here][1]
[1]: https://i.sstatic.net/9bem2.png

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冬天旳寂寞 2025-01-31 10:32:08

此处的问题在您的和中，条件中的中。

while favPlayer != 'lebron james' and 'jayson tatum':

和用于测试两个条件，但是这里正在测试条件（favplayer！='lebron james）和一个字符串（'jayson tatum'）。

取而代之的是，

while favPlayer != 'lebron james' and favPlayer != 'jayson tatum':

您的尝试没有错误进行的原因是，python中的任何非零东西都被视为true。因此，实际上您的陈述被解释为

 while favPlayer != 'lebron james' and True:

：

 while favPlayer != 'lebron james':

The issue here is in your and in your while condition.

while favPlayer != 'lebron james' and 'jayson tatum':

and is used to to test two conditions, but here it's testing a condition (favPlayer != 'lebron james) and a string ('jayson tatum').

Instead

while favPlayer != 'lebron james' and favPlayer != 'jayson tatum':

The reason your attempt ran without error is that any non-zero thing in python is considered True. So really your while statement was being interpreted as:

 while favPlayer != 'lebron james' and True:

Which is the same as

 while favPlayer != 'lebron james':

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合久必婚 2025-01-31 10:32:08

您可以在循环时使用无限进行输入，直到用户输入其中一个名称：

while True:
    favPlayer = str.lower(
        input('Favorite player on the list (Lebron James, Jayson Tatum): '))
    if favPlayer == 'jayson tatum':
        position = 'Small Forward'
        print('Your position is Small Forward')
        break
    elif favPlayer == 'lebron james':
        position = 'Power Forward'
        print('Your position is Power Forward')
        break

输出：

Favorite player on the list (Lebron James, Jayson Tatum): Arsho
Favorite player on the list (Lebron James, Jayson Tatum): Lebron James
Your position is Power Forward

You can take input using an infinite while loop until the user enters one of the names:

while True:
    favPlayer = str.lower(
        input('Favorite player on the list (Lebron James, Jayson Tatum): '))
    if favPlayer == 'jayson tatum':
        position = 'Small Forward'
        print('Your position is Small Forward')
        break
    elif favPlayer == 'lebron james':
        position = 'Power Forward'
        print('Your position is Power Forward')
        break

Output:

Favorite player on the list (Lebron James, Jayson Tatum): Arsho
Favorite player on the list (Lebron James, Jayson Tatum): Lebron James
Your position is Power Forward

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