如果輸入有誤，我該如何再次詢問相同的輸入？

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?") 

如何在輸入無效輸入時重複其他操作？

Answer 1

，當你有你的輸入使用一個無限循環和break出來：

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")