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我是新來編碼,並決定做一個基本的計算器。在我完成它的工作之後,我決定在輸入錯誤的變量時創建文本。我使用這個代碼,但它運行,不管我輸入什麼。任何修復將不勝感激!輸入錯誤時的基本計算器錯誤消息應該出現,但不管輸入如何顯示
while user_input != ("1","2","3","4"):
print("Please enter 1, 2, 3 or 4!")
user_input = input("Choice:")
下面是完整的代碼:
import time
def Add(x, y):
return x + y # x is added to y
def Sub(x, y):
return x - y # x is subtracted by y
def Multiply(x, y):
return x * y # x is multiplied by y
def Divide(x, y):
return x/y # x is divided by y
print("Select a function:\n")
print("1.Add\n")
print("2.Sub\n")
print("3.Multiply\n")
print("4.Divide\n")
user_input = input("Choice:") # user chooses function
while user_input != ("1","2","3","4"):
print("Please enter 1, 2, 3 or 4!")
user_input = input("Choice:")
num1 = float(input("Enter first number:")) # user unputs number
num2 = float(input("Enter second number:")) # user inputs second number
if user_input == '1':
print(num1, "+", num2, "=", Add(num1,num2))
if user_input == '2':
print(num1, "-", num2, "=", Sub(num1,num2))
if user_input == '3':
print(num1, "*", num2, "=", Multiply(num1,num2))
if user_input == '4':
print(num1, "/", num2, "=", Divide(num1,num2))
time.sleep(5) # sleeps for 5 seconds before ending