面向对象3

组合习题,主动调用其他成员

 

组合习题

第一题:

　　

 1 class StarkConfig(object):
 2     def __init__(self,num):
 3         self.num = num
 4 
 5     def changelist(self,request):
 6         print(self.num,request)
 7 
 8 class RoleConfig(StarkConfig):
 9      def changelist(self,request):
10         print(666,self.num)
11 
12 #创建了一个列表,列表中有三个实例对象
13 [StarkConfig对象(num=1),StarkConfig对象(num=2),RoleConfig对象(num=3)]
14 config_obj_list = [StarkConfig(1),StarkConfig(2),RoleConfig(3)]
15 for item in config_obj_list:
16     item.changelist(999)

结果为:　　1 168

　　　　　 2 168

　　　　　 666 3

第二题:

 1 class StarkConfig(object):
 2     def __init__(self,num):
 3         self.num = num
 4 
 5     def changelist(self,request):
 6         print(self.num,request)
 7     
 8     def run(self):
 9         self.changelist(999)
10 
11 class RoleConfig(StarkConfig):
12     def changelift(self,request):
13         print(666,self.num)
14 
15 config_obj_list = [StarkConfig(1),StarkConfig(2),RoleConfig(3)]
16 config_obj_list[1].run()
17 config_obj_list[2].run()

结果为:

　　1 999

　　2 999

　　666 3

 

第三题:

 1 class StarkConfig(object):
 2     def __init__(self,num):
 3         self.num = num
 4     
 5     def changelist(self,request):
 6         print(self.num,changelist)
 7 
 8     def run(self):
 9         self.changelift(999)
10 
11 class RoleConfig(StarkConfig):
12     def changelift(self,request):
13         print(666,self.num)
14 
15 class AdminSite(object):
16     def __init__(self):
17         self._registry = {}
18 
19     def register(self,k,v):
20         self.registry[k] = v
21 
22 site = AdminSite()
23 print(len(site._registry))#0
24 site.register("abc",666)
25 site.register("def",999)
26 print(len(site._registry))#2
　　
　　site.register("lyd",StarkConfig(19))
　　site.register("yjl",StarkConfig(20))
　　site.register("fgz",RoleConfig(30))
　　print(len(site._registry))#5

第四题:

 1 class StarkConfig(object):
 2     def __init__(self,num):
 3         self.num = num
 4     
 5     def changelist(self,request):
 6         print(self.num,request)
 7 
 8     def run(self):
 9         self.changelist(999)
10 
11 class RoleConfig(StarkConfig):
12     def changelist(self,request):
13         print(666,self.num)
14 
15 class AdminSite(object):
16     def __init__(self):
17         self._registry = {}
18 
19     def register(self,k,v):
20         self._registry[k] = v
21 
22 site = AdminSite()
23 site.register("lyd",StarkConfig(19))
24 site.register("yjl",StarkConfig(20))
25 site.register("fgz",RoleConfig(21))
26 
27 print(len(siter._registry))
28 
29 for k,row in site._registry.items():
30     row.changelist(5)

结果为:

　　3

　　19　　5

　　20　　5

　　666　　33

 

第五题:

 1 class StarkConfig(object):
 2     def __init__(self,num):
 3         self.num = num
 4 
 5     def changelist(self,request):
 6         print(self.num,changelist)
 7 
 8     def run(self):
 9         self.changelist(999)
10 
11 class RoleConfig(StarkConfig):
12     def changelist(self,request):
13         print(666,self.num)
14 
15 class AdminSite(object):
16     def __init__(self):
17         self._registry = {}
18     
19     def register(self,k,v):
20         self._registry[k] = v
21 
22 site = AdminSite()
23 site.register("a",StarkConfig(19))
24 site.register("b",StarkConfig(20))
25 site.register("c",RoleConfig(33))
26 print(len(site._registry))
27 
28 for k,row in site._registry.items():
29     row.run()

结果为:

　　3

　　19　　999

　　20　　999

　　666　　33

 

第六题:

 1 class UserInfo(object):
 2     pass
 3 
 4 class Department(object):
 5     pass
 6 
 7 class StarkConfig(object):
 8     def __init__(self,num):
 9         self.num = num
10 
11     def changelist(self,request):
12         print(self.num,request)
13 
14     def run(self):
15         self.changelist(999)
16 
17 class RoleConfig(StarkConfig):
18     def __init__(self):
19         self._registry = {}
20     
21     def register(self,k,v):
22         self._registry[k] = v(k)
23 
24 class AdminSite(object):
25     def __init__(self):
26         self._registry[k] = v[k]
27 
28 site = AdminSite()
29 site.register(UserInfo,StarkConfig)
30 site.register(Department,StarkConfig)
31 print(len(site._registry))
32 
33 for k,row in site._registry.items():
34     row.run()

结果为:

　　类UserInfo　　999

　　类Department　　999

 

 

主动调用其他成员

　　方式1:

　　　　

 1 class Base(object):
 2     def f1(self):
 3         print(1)
 4 
 5 class Foo(object):
 6     def f1(self):
 7         print(2)
 8         Base.f1(self)
 9 
10 obj = Foo()
11 obj.f1()
12 
13 #Base.实例方法(自己传self),与继承无关

　　方式2:按照类的继承顺序,查找下一个

 1 class Foo(object):
 2     def f1(self):
 3         super().f1()
 4         print(1)
 5 
 6 class Bar(object):
 7     def f1(self):
 8         print(2)
 9 
10 class Info(Foo,Bar):
11     pass
12 
13 obj = Foo()
14 obj.f1()
#2
#1

 

posted @ 2018-09-01 12:52  小鸽鸽OvO  阅读(179)  评论(0)  编辑  收藏  举报