将(某类的)实例用作(某其他类的)属性
class IceCreamStand(Restaurant):
def __init__(self,restaurant_name, cuisine_type):
super().__init__(restaurant_name, cuisine_type)
self.flavors = ['草莓','巧克力','芒果']
def get_flavors(self):
print('现在提供%s这些口味'%self.flavors)
第一个作业, 练习子类的写法,初始化父类的属性和子类的属性
class User:
def __init__(self,first_name, last_name, sex, age):
self.first_name = first_name
# self.last_name = last_name
# self.sex = sex
# self.age = age
self.login_attempts = 0
def describe_user(self):
print('姓名: %s%sn性别: %sn年龄: %s'%(self.last_name,self.first_name,self.sex,self.age))
#print('姓名: %s %sn性别:%sn年龄:'%(self.last_name,self.first_name,self.sex))
def greet(self):
print('欢迎%s%s加入社区'%(self.last_name,self.first_name))
def increment_login_attempts(self):
self.login_attempts = 1
def reset_login_attempts(self):
self.login_attempts = 0
class Privileges:
privileges = ["can add post","can delete post","can ban user"]
def show_privileges(self):
print(self.privileges)
class Admin(User):
def __init__(self,first_name, last_name, sex, age):
super().__init__(first_name, last_name, sex, age)
self.privileges = Privileges()
创建Privileges类 用其实例当做 类Admin的属性
