如何解决此基本范围问题

Question

我正在函数中返回一个变量，并尝试以全局方式打印它（作为范围测试），但是它不起作用。我需要另一个函数中的变量，但无论做什么，它始终无法识别它。为什么此代码中的最后一个打印无效？

def assignchar():
    assigning = True
    player2 = ""
    while assigning:
        player1 = input("Player 1: Do you want to be X or O? ")
        if player1.upper() == 'X':
            player1 = 'X'
            player2 = 'O'
            assigning = False
        elif player1.upper() == 'O':
            player1 = 'O'
            player2 = 'X'
            assigning = False
        else:
            print('Please select X or O.')
    print(f'Player 1 is {player1}') 
    print(f'Player 2 is {player2}\n')
    return(player1, player2)
assignchar()
print(player1 + "and " + player2)

Answer 1

假设您需要打印返回的值，我将添加此答案

player1, player2 = assignchar()
print(player1 + "and " + player2)