如果输入有误，我该如何再次询问相同的输入？

Question

players = input("How many players?") 
if players == "1": 
    p1 +=1 
elif players == "2": 
    p2 +=1 
else: 
    print("Invalid Input") 
    players = input("How many players?") 

如何在输入无效输入时重复其他操作？

Answer 1

，当你有你的输入使用一个无限循环和break出来：

while True: 
    players = input("How many players?") 
    if players == "1": 
     p1 += 1 
     break 
    elif players == "2": 
     p2 += 1 
     break 
    else: 
     print("Sorry, please pick 1 or 2. Let's try again")