請看一下我對您的代碼所做的更改，如下所示：def add (x, y):

return(x + y)

def subtract(x, y):

return(x - y)

def multiply(x, y):

return(x * y)

def divide(x, y):

return(x / y)

def input_number(prompt):

while True:

try:

return int(input(prompt))

except ValueError:

print("That was not a number")

# Keep going around the loop until the user chooses 5 to quit

while True:

print

print("Select operation.")

print("1.Add")

print("2.Subtract")

print("3.Multiply")

print("4.Divide")

print("5.Quit")

choice = input("Enter choice(1/2/3/4/5):")

# Do they want to quit?

if choice == 5:

break

num1 = input_number("Enter first number: ")

num2 = input_number("Enter second number: ")

if choice == 1:

print(num1,"+",num2,"=", add(num1,num2))

elif choice == 2:

print(num1,"-",num2,"=", subtract(num1,num2))

elif choice == 3:

print(num1,"*",num2,"=", multiply(num1,num2))

elif choice == 4:

print(num1,"/",num2,"=", divide(num1,num2))

else:

print("%s - Invalid input" % choice)

為了請求更多的輸入，您需要將提示包裝在一個循環中。然后，您需要向用戶添加一個選項以允許他們退出。在

此外，還可以將數字提示移動到函數中。如果用戶輸入一個字符，這將繼續詢問數字。在

總結

以上是生活随笔為你收集整理的python当用户输入的不是整数_当用户输入字符串而不是整数时，如何保护我的python代码？...的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。