如何同时检查两个值是否在范围内？能否用单行代码实现？

嘿，我懂你想简化代码的想法，但你现在的判断写法在Python里是行不通的——player_number, player_number2会被解析成一个元组，而range(0,2)里的元素是单个整数（0和1），元组肯定不在这个范围里，所以才会报错。

给你两种可行的单行写法：

方法1：用and分别判断（最直观） #

直接明确检查两个变量都在目标范围内，可读性拉满：

while True:
    player_number = int(input('Determine first player Random(0) or AI(1):'))
    player_number2 = int(input('Determine second player Random (0) or AI (1):'))
    if player_number in range(0,2) and player_number2 in range(0,2):
        break
    else:
        print ('Out of range. Please choose a player')

方法2：用all()函数简化（适合多变量场景） #

如果以后要检查更多变量，用all()可以让代码更简洁，不用写一堆and：

while True:
    player_number = int(input('Determine first player Random(0) or AI(1):'))
    player_number2 = int(input('Determine second player Random (0) or AI (1):'))
    if all(x in range(0,2) for x in [player_number, player_number2]):
        break
    else:
        print ('Out of range. Please choose a player')

两种写法都能实现你要的效果，选哪个看你自己的习惯啦～

内容的提问来源于stack exchange，提问作者Vural Erdogan