十一、组合

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

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('python',1000,'20h',s1)

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):
        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')

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')
    school_obj=menu[choice]
    name=input('课程名')
    price=input('学费')
    period=input('学时')
    new_course=Course(name,price,period,school_obj)
    print('课程%s属于学校%s'%(new_course.name,new_course.school.name))

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

s1=School('oldboy','北京')
s2=School('oldboy','南京')
s3=School('oldboy','东京')
c1=Course('python',1000,10,s1)
c2=Course('Java',2000,20,s2)

teacher1=Teacher('alex',30,c1)
print('%s老师今年%s岁，他所教的课程是%s,课程的学费是%s,授课地点是%s'%(teacher1.name,teacher1.age,teacher1.teach_course.name,teacher1.teach_course.price,teacher1.teach_course.school.addr))