Question

我现在是编程的新手，我不太基础。我试图在python中创建一个计算器，但它可以正常工作，但我无法重新运行它

我已经在某个站点上尝试过一些东西，但是一切都太复杂了，以至于我无法理解。

num1 = input("Enter your 1st number: ")
num2 = input("Enter your 2nd number: ")
choose_ope = input("Choose your operator: ")
if choose_ope == '+':
    print(float(num1) + float(num2))
elif choose_ope == '-':
    print(float(num1) - float(num2))
elif choose_ope == '*':
    print(float(num1) * float(num2))
elif choose_ope == '/':
    print(float(num1) / float(num2))

go_again = input("Do you want to go again ? : Y/N\n")
if go_again == 'Y':
    //i want the program to rerun itself here
else:
    print("OK!!")

如果用户输入Y，我希望计算器重新启动。详细的答案将不胜感激。谢谢

Answer 1

要停止重复，请遍历该代码和break：

while True: # Will start repeating here
    num1 = input("Enter your 1st number: ")
    num2 = input("Enter your 2nd number: ")
    choose_ope = input("Choose your operator: ")
    if choose_ope == '+':
        print(float(num1) + float(num2))
    elif choose_ope == '-':
        print(float(num1) - float(num2))
    elif choose_ope == '*':
        print(float(num1) * float(num2))
    elif choose_ope == '/':
        print(float(num1) / float(num2))

    go_again = input("Do you want to go again ? : Y/N\n")
    if go_again != 'Y':
        print("OK!! Exiting")
        break # break to leave the loop

    # It will loop automatically back to the top otherwise

Answer 2

我们可以通过将其编写为函数并将其作为递归函数（如下所示）来实现。

def calculator():
    num1 = input("Enter your 1st number: ")
    num2 = input("Enter your 2nd number: ")
    choose_ope = input("Choose your operator: ")
    if choose_ope == '+':
        print(float(num1) + float(num2))
    elif choose_ope == '-':
        print(float(num1) - float(num2))
    elif choose_ope == '*':
        print(float(num1) * float(num2))
    elif choose_ope == '/':
        print(float(num1) / float(num2))

    go_again = input("Do you want to go again ? : Y/N\n")
    if go_again == 'Y':
        calculator()
    else:
        print("OK!!")

calculator()

Answer 3

您可以使用while loop来再次运行代码，直到输入与Y不同：

go_again = 'Y'

while go_again == 'Y':
    num1 = input("Enter your 1st number: ")
    num2 = input("Enter your 2nd number: ")
    choose_ope = input("Choose your operator: ")
    if choose_ope == '+':
        print(float(num1) + float(num2))
    elif choose_ope == '-':
        print(float(num1) - float(num2))
    elif choose_ope == '*':
        print(float(num1) * float(num2))
    elif choose_ope == '/':
        print(float(num1) / float(num2))

   go_again = input("Do you want to go again ? : Y/N\n")
   if go_again == 'Y':
       print("while loop will run again")
   else:
       print("program will exit")

我如何使程序在python中重新运行？

3 个答案: