Day7组合

可以将那些重复的，固定的东西提出来，单独定义一个类。

例如：

 1 class Course:
 2     def __init__(self,course_name,course_period,course_price):
 3         self.course_name=course_name
 4         self.course_period=course_period
 5         self.course_price=course_price
 6     def tell_info(self):
 7         print('<课程名:%s 周期：%s 价格：%s>' %(self.course_name,self.course_period,self.course_price))
 8 
 9 python=Course('Python','6mons',3000)
10 linux=Course('Lnux','3mons',2000)
11 bigdata=Course('BigData','1mons',1000)

例如这种：

 1 class OldboyPeople:
 2     school = 'oldboy'
 3     def __init__(self,name,age,sex):
 4         self.name=name
 5         self.age=age
 6         self.sex=sex
 7 
 8     def eat(self):
 9         print('is eating')
10 
11 class OldboyStudent(OldboyPeople):
12 
13     def __init__(self,name,age,sex):
14         OldboyPeople.__init__(self,name,age,sex)
15         self.course=[]
16 
17     def learn(self):
18         print('%s is learning'  %self.name)
19 
20 
21 class OldboyTeacher(OldboyPeople):
22     def __init__(self,name,age,sex,salary,title):
23         OldboyPeople.__init__(self,name,age,sex)
24         self.salary=salary
25         self.title=title
26         self.course=[]
27 
28     def teach(self):
29         print('%s is teaching'  %self.name)
30 
31 
32 class Course:
33     def __init__(self,course_name,course_period,course_price):
34         self.course_name=course_name
35         self.course_period=course_period
36         self.course_price=course_price
37     def tell_info(self):
38         print('<课程名:%s 周期：%s 价格：%s>' %(self.course_name,self.course_period,self.course_price))
39 
40 python=Course('Python','6mons',3000)
41 linux=Course('Lnux','3mons',2000)
42 bigdata=Course('BigData','1mons',1000)
43 
44 # python.tell_info()
45 
46 
47 egon_obj=OldboyTeacher('egon',18,'male',3.1,'沙河霸道金牌讲师')
48 #
49 # egon_obj.course.append(python)
50 # egon_obj.course.append(linux)
51 #
52 # for obj in egon_obj.course:
53 #     obj.tell_info()
54 
55 
56 yl_obj=OldboyStudent('yanglei',28,'female')
57 yl_obj.course.append(python)
58 
59 for i in yl_obj.course:
60     # print(i.course_name,i.course_period,i.course_price)
61     i.tell_info()