am i using while wrong (PYTHON) [duplicate]

Question

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.stack.imgur.com/9bem2.png

Answer 1

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':

Answer 2

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