輸入錯誤時，如何再次請求相同的輸入？

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?")

輸入無效的輸入后，如何使其他重復？

Answer 1

使用無限循環並在輸入后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")