9-8 权限 :编写一个名为Privileges 的类,它只有一个属性——privileges ,其中存储了练习9-7 所说的字符串列表。将方法show_privileges() 移到这个类中。在Admin 类中,将一个Privileges 实例用作其属性。创建一个Admin 实例,并使用方法show_privileges() 来显示其权限。
class User():
def __init__(self, first_name, last_name):
self.first_name = first_name
self.last_name = last_name
def describe_user(self):
print(self.first_name.title() + " " + self.last_name.title())
def greet_user(self):
print("Hello "+ self.first_name.title() + " " + self.last_name.title())
class Privileges():
def __init__(self,privileges=[]):
self.privileges = ['can add post','can delee post','can ban user']
def show_privileges(self):
for privilege in self.privileges:
print('You can ' + privilege + ' !')
class Admin(User):
def __init__(self, first_name, last_name):
super().__init__(first_name, last_name)
self.privileges = Privileges()
vip_user =Admin('yun','mengze')
vip_user.describe_user()
vip_user.greet_user()
vip_user.privileges.show_privileges()