管理员是一种特殊的用户。编写一个名为 Admin 的类让它继承第四章作业3和4而编写的 User 类。添加一个名为 privileges 的属性用于存储一个由字符串如can add post 、 can delete post 和 can ban user 等组成的列表。编写一个名为show_privileges 的方法它显示管理员的权限。创建一个Admin 实例并调用这个方法。

下面是代码实现：

class User:
    def __init__(self, first_name, last_name, age, gender, email):
        self.first_name = first_name
        self.last_name = last_name
        self.age = age
        self.gender = gender
        self.email = email
    
    def describe_user(self):
        print("First Name:", self.first_name)
        print("Last Name:", self.last_name)
        print("Age:", self.age)
        print("Gender:", self.gender)
        print("Email:", self.email)

    def greet_user(self):
        print("Hello, " + self.first_name + " " + self.last_name + "!")
        
class Admin(User):
    def __init__(self, first_name, last_name, age, gender, email):
        super().__init__(first_name, last_name, age, gender, email)
        self.privileges = ["can add post", "can delete post", "can ban user"]
    
    def show_privileges(self):
        print("The Admin has the following privileges:")
        for privilege in self.privileges:
            print("- " + privilege)

admin = Admin("John", "Doe", 30, "Male", "johndoe@example.com")
admin.show_privileges()

输出结果为：

The Admin has the following privileges:
- can add post
- can delete post
- can ban user
``