day21_组合

目录

• 组合

组合

组合指的是将一个对象作为另一个对象的属性

目的是为了减少代码冗余，增加程序扩展性

class Student:
    def __init__(self, name, age, id):
        self.name = name
        self.age = age
        self.id = id
        self.course_list = []
	
    # 对象的组合
    def choose_course(self, course_obj):
            self.course_list.append(course_obj)

    def my_courses_info(self):
        print(f'学生：{self.name}')
        for course_obj in self.course_list:
            course_obj.print_course_info()


class Course:
    def __init__(self, course_name, course_period, course_price):
        self.course_name = course_name
        self.course_period = course_period
        self.course_price = course_price

    def print_course_info(self):
        print(f'''
        课程名称：{self.course_name}
        课程时长：{self.course_period}
        课程价格：{self.course_price}''')


#  实例化
student1 = Student('小明', 18, 19101101)
student2 = Student('小红', 18, 19101102)
python = Course('python', 6, 2.3)
linux = Course('linux', 4, 1.2)

student1.choose_course(python)
student2.choose_course(python)
student2.choose_course(linux)

student1.my_courses_info()
student2.my_courses_info()