Python--函数即变量

def say(name):
    print(name)


panda = say
panda('wang')


def add():
    print('add')


def view():
    print('view')


def delete():
    print('delete')


choice = input('请输入选项').strip()
menu = {
    '1': add,
    '2': view,
    '3': delete
}
if choice in menu:
    menu[choice]()  # 适合用于函数没有参数，或者参数是一样的情况下。
else:
    print('输入错误')