面向对象之组合

class Hand:
    pass

class Foot:
    pass

class Trunk:
    pass

class Head:
    pass

class Person:
    def __init__(self,id_num,name):
        self.id_num=id_num
        self.name=name
        self.hand=Hand()
        self.foot=Foot()
        self.trunk=Trunk()
        self.head=Head()

p1=Person(‘111111‘,‘alex‘)

class School:
    def __init__(self,name,addr):
        self.name=name
        self.addr=addr

    def zhao_sheng(self):
        print(‘%s 正在招生‘%self.name)

class Course:
    def __init__(self,name,price,period,school):
        self.name=name
        self.price=price
        self.period=period
        self.school=school


s1=School(‘oldboy‘,‘北京‘)
s2=School(‘oldboy‘,‘南京‘)
s3=School(‘oldboy‘,‘东京‘)

c1=Course(‘linux‘,10,‘1h‘,s1)
print(c1.__dict__)
#{‘name‘: ‘linux‘, ‘price‘: 10, ‘period‘: ‘1h‘, ‘school‘: <__main__.School object at 0x000001BD46E57BE0>}
print(c1.school.name)#oldboy

class School:
    def __init__(self,name,addr):
        self.name=name
        self.addr=addr

    def zhao_sheng(self):
        print(‘%s 正在招生‘%self.name)

class Course:
    def __init__(self,name,price,period,school,teacher):
        self.name=name
        self.price=price
        self.period=period
        #组合的方式建关联
        self.school=school
        self.teacher=teacher

class Teacher:
    def __init__(self,name,age,sex,school):
        self.name=name
        self.age=age
        self.sex=sex
        self.school=school

    def tea_stu(self):
        print(‘%s 老师正在上课‘%self.name)

s1=School(‘oldboy‘,‘北京‘)
s2=School(‘oldboy‘,‘南京‘)
s3=School(‘oldboy‘,‘东京‘)

# c1=Course(‘linux‘,10,‘1h‘,s1)


msg=‘‘‘
1 老男孩 北京校区
2 老男孩 南京校区
3 老男孩 东京校区
‘‘‘
while True:
    print(msg)
    menu={
        ‘1‘:s1,
        ‘2‘:s2,
        ‘3‘:s3,
    }
    choice=input(‘选择学校>>: ‘).strip()
    school_obj=menu[choice]

    t1=Teacher(‘alex‘,18,‘male‘,school_obj)
    t2=Teacher(‘egon‘,22,‘male‘,school_obj)
    t3=Teacher(‘shanshan‘,35,‘female‘,school_obj)
    msg1=‘‘‘
    1 alex老师
    2 geon老师
    3 shanshan老师
    ‘‘‘
    print(msg1)
    menu1={
        ‘1‘:t1,
        ‘2‘:t2,
        ‘3‘:t3,
    }
    tea_name=input(‘选择代课老师的姓名>>: ‘).strip()
    teacher_obj=menu1[tea_name]

    name=input(‘课程名>>: ‘).strip()
    price=input(‘课程费用>>: ‘).strip()
    period=input(‘课程周期>>: ‘).strip()

    new_course=Course(name,price,period,school_obj,teacher_obj)
    print(‘‘‘
    ------------选课详细信息------------
    学校：%s
    地址：%s
    老师：%s    年龄：%s   性别%s
    课程：%s
    费用：%s
    周期：%s
    ‘‘‘%(new_course.teacher.school.name,new_course.teacher.school.addr,new_course.teacher.name,new_course.teacher.age,new_course.teacher.sex,new_course.name,new_course.price,new_course.period))