Question

我使用switch创建了一个堆栈程序，但它似乎无法正常工作。它保持迭代推方法。它甚至没有退出程序。

global a
a=[]
def push():
    push_no=int(input("Enter number you want to push"))
    a.append(push_no)

def pop():
    poped_item=a.pop()
    print("Poped item {}".format(poped_item))


def display():
    print(a)  

def numbers_to_strings(a1): 
    switcher = { 
        1: push(), 
        2: pop(), 
        3: display(),
        4: quit()
    } 
    return switcher.get(a1, "nothing")


# Driver program 
if __name__ == "__main__": 
    while True:
        a1=int(input("ENTER WHICH OPERATION YOU WANT OT PERFORM 1-Push, 2-POP, 3-Display 4-quit"))
        numbers_to_strings(a1)

Answer 1

在myAdapter.setListener { supportFragmentManager .beginTransaction() .replace(MainActivity.FRAGMENT_CONTAINER, TextScreen()) .commit() }定义中，您已经评估了字典中的功能。试试：

numbers_to_strings

使用switch语句在python中创建的堆栈

1 个答案: