Python 空闲重启

Question

我正在尝试运行我在 IDLE 中的代码 Python 我写的一切都是正确的，但遗憾的是我不能运行。无故重启。

def calculator():
    operation = input('''
Please Enter one of These:
+ for adding
- for minize
* for multiply
/ for devision
''')

    num1 = int(input('Num 1 : '))
    num2 = int(input('Num 2 : '))

    if operation == '+':
        print(' {} + {} = ' . format(num1 , num2))
        print(num1 + num2)

    elif operation == '-':
        print(' {} - {} = ' . format(num1 , num2))
        print(num1 - num2)

    elif operation == '*':
        print(' {} * {} = ' . format('num1 , num2'))
        print(num1 * num2)

    elif operation == '/':
        print(' {} / {} = ' . format('num1 , num2'))
        print(num1 / num2)

    else:
        print('Error')

    again()

def again():
    calc_again = input('''
Wanna Try Again:
if yes please type Y and if no Please Type N
''')
    if calc_again.upper() == 'Y':
        calculator()

    elif calc_again.upper() == 'N':
        print('Good Bye')
    else:
        again()

Answer 1

您必须调用 calculator() 方法来启动程序（检查最后一行）..

def calculator():
    operation = input('''
Please Enter one of These:
+ for adding
- for minize
* for multiply
/ for devision
''')

    num1 = int(input('Num 1 : '))
    num2 = int(input('Num 2 : '))

    if operation == '+':
        print(' {} + {} = ' . format(num1 , num2))
        print(num1 + num2)

    elif operation == '-':
        print(' {} - {} = ' . format(num1 , num2))
        print(num1 - num2)

    elif operation == '*':
        print(' {} * {} = ' . format('num1 , num2'))
        print(num1 * num2)

    elif operation == '/':
        print(' {} / {} = ' . format('num1 , num2'))
        print(num1 / num2)

    else:
        print('Error')

    again()

def again():
    calc_again = input('''
Wanna Try Again:
if yes please type Y and if no Please Type N
''')
    if calc_again.upper() == 'Y':
        calculator()

    elif calc_again.upper() == 'N':
        print('Good Bye')
    else:
        again()

calculator() #call method

Python 空闲重启

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