如果输入错误，我怎样才能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?")

如果输入无效输入，我怎样才能重复其他？

Answer 1

输入时使用无限循环和break：

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")