组合

#组合
#生成一个人的类
class People:
    school = 'luffycity'
    def __init__(self, name, age, sex):
        self.name = name
        self.age = age
        self.sex = sex
#生成一个老师的类并且继承人的类
class Teacher(People):
    def __init__(self, name, age, sex, level, salary):
        super().__init__(name, age, sex)

        self.level = level
        self.salary = salary
    def tech(self):
        print('%s is teaching'%self.name)

#生成一个学生类并且继承人的类
class Student(People):
    def __init__(self, name, age, sex, class_time):
        super().__init__(name, age, sex)

        self.class_time = class_time

    def learn(self):
        print('%s is learn' % self.name)
#生成一个课程类
class Course:
    def __init__(self, course_name, course_price, course_period):
        self.course_name = course_name
        self.course_price = course_price
        self.course_period = course_period
    def tell_info(self):
        print('课程名字%s， 课程价钱%s,课程周期%s'%(self.course_name, self.course_price,
                                       self.course_period))
#生成一个日期类
class Date:
    def __init__(self, year, mon, day):
        self.year = year
        self.mon = mon
        self.day = day
    def tell_info(self):
        print('%s-%s-%s'%(self.year, self.mon, self.day))

#把类进行实例化
teacher1 = Teacher('alex', 20, 'male', 10, 3000)
teacher2 = Teacher('engin', 23, 'male', 30, 3000)
student1 = Student('张三', 23, 'feamle', '08:30:12')
python = Course('python', 3000, '4mons')
linux = Course('linux', 2000, '3mons' )
data = Date(1991, 2, 30)
#把老师和学生共同拥有的课程或者生日的对象的类添加到老师或者学生的对象里面
teacher1.course = python
teacher2.coursr = python
student1.course1 = python
student1.course2 = linux
student1.brih = data
#用老师或者学生的对象直接调用生日或者课程的函数属性进行查找
teacher1.course.tell_info()
print(teacher1.course.course_name)
print(teacher1.course)
print(student1.course1)
print(teacher2.coursr)
print(python)
python.tell_info()

student1.course1.tell_info()
student1.course2.tell_info()
student1.course1 = []
student1.course1.append(python)

student1.brih.tell_info()