Question

我是Python的初学者，我认为制作一个简单的计算器是个好主意，一开始它应该询问用户想要的操作。然后相应地遍历。

我确实尝试过更改某些东西，但没有帮助

代码如下：

def user_input():
    operation_choice = (str(input("What operation would you like to perform?: ")))


while user_input("add"):
    def add_numbers():
        val1 = int(input("Enter your first value here: "))
        val2 = int(input("Enter your second value here: "))
        total = val1 + val2
        print(total)

while user_input():
    def subtract_numbers():
        val1 = int(input("Enter your first value here: "))
        val2 = int(input("Enter your second value here: "))
        total = val1 - val2
        print(total)

while user_input():
    def multiply_numbers():
        val1 = int(input("Enter your first value here: "))
        val2 = int(input("Enter your second value here: "))
        total = val1 + val2
        print(total)

while user_input():
    def divide_numbers():
        val1 = int(input("Enter your first value here: "))
        val2 = int(input("Enter your second value here: "))
        total = val1 + val2
        print(total)

    add_numbers()
    subtract_numbers()
    multiply_numbers()
    divide_numbers()
user_input()

Answer 1

我已经自由地重新安排了一些事情。

def user_input():
    operation_choice = (str(input("What operation would you like to perform?: ")))
    if operation_choice == 'add':
        add_numbers()
    elif operation_choice == 'subtract':
        subtract_numbers()
    elif operation_choice == 'multiply':
        multiply_numbers()
    elif operation_choice == 'divide':
        divide_numbers()

def add_numbers():
    val1 = int(input("Enter your first value here: "))
    val2 = int(input("Enter your second value here: "))
    total = val1 + val2
    print(total)

def subtract_numbers():
    val1 = int(input("Enter your first value here: "))
    val2 = int(input("Enter your second value here: "))
    total = val1 - val2
    print(total)

def multiply_numbers():
    val1 = int(input("Enter your first value here: "))
    val2 = int(input("Enter your second value here: "))
    total = val1 + val2
    print(total)

def divide_numbers():
    val1 = int(input("Enter your first value here: "))
    val2 = int(input("Enter your second value here: "))
    total = val1 + val2
    print(total)

user_input()

以这种方式编写，程序将执行一个操作，然后退出。如果您希望它继续要求更多操作，则将最后一个user_input()包装在这样的无限循环中：

while True:
    user_input()

然后该程序将继续运行，直到您按Ctrl-C。

user_input（）接受0个位置参数，但给定1个错误

1 个答案: