• 面向对象小练习2


    # 1.类或对象是否能做字典的key
    # 2.简述python的私有成员是如何实现的
    # 3.私有成员能在类的外部使用么?能在子类中使用么?
    # 4.读程序写结果.(不执行)
    '''
    class StarkConfig(object):
        def __init__(self,num):
            self.num = num
        def changelist(self,request):
            print(self.num,request)
    
    class RoleConfig(StarkConfig):
        def changelist(self,request):
            print('666')
    '''
    #创建了一个列表,列表中有三个对象(实例)
    # config_obj_list = [StarkConfig(1),StarkConfig(2),RoleConfig(3)]
    # for item in config_obj_list:
        # print(item.num)
    
    # 5.读程序写结果.(不执行)
    print("<===5===>")
    '''
    class StarkConfig(object):
        def __init__(self,num):
            self.num = num
        def changelist(self,request):
            print(self.num,request)
    
    class RoleConfig(StarkConfig):
        pass
    '''
    #创建了一个列表,列表中有三个对象(实例)
    # config_obj_list = [StarkConfig(1),StarkConfig(2),RoleConfig(3)]
    # for item in config_obj_list:
        # item.changelist(168)
    # print(config_obj_list[0].num)
    
    # 6.读程序写结果.(不执行)
    '''
    class StarkConfig(object):
        def __init__(self,num):
            self.num = num
        def changelist(self,request):
            print(self.num,request)
    
    class RoleConfig(StarkConfig):
        def changelist(self,request):
            print(666,self.num)
    
    config_obj_list = [StarkConfig(1),StarkConfig(2),RoleConfig(3)]
    for item in config_obj_list:
        item.changelist(168)
    '''
    
    # 7.读程序写结果.(不执行)
    '''
    print("<====>")
    class StarkConfig(object):
        def __init__(self,num):
            self.num = num
        def changelist(self,request):
            print(self.num,request)
        def run(self):
            self.changelist(999)
    
    class RoleConfig(StarkConfig):
        def changelist(self,request):
            print(666,self.num)
    
    config_obj_list = [StarkConfig(1),StarkConfig(2),RoleConfig(3)]
    config_obj_list[1].run()  
    config_obj_list[2].run()  
    '''
    
    # 8.读程序写结果.(不执行)
    '''
    print("<==8==>")
    class StarkConfig(object):
        def __init__(self,num):
            self.num = num
        def changelist(self,request):
            print(self.num,request)
        def run(self):
            self.changelist(999)
    
    class RoleConfig(StarkConfig):
        def changelist(self,request):
            print(666,self.num)
    
    class AdminSite(object):
        def __init__(self):
            self._registry = {}
        def register(self,k,v):
            self._registry[k] = v
    
    site = AdminSite()
    print(len(site._registry))  
    site.register('range',666)
    site.register('shilei',438)
    print(len(site._registry))  
    
    site.register('lyd',StarkConfig(19))
    site.register('yjl',StarkConfig(20))
    site.register('fgz',RoleConfig(33))
    print(len(site._registry))    
    print(site._registry)
    '''
    
    # 9.读程序写结果.(不执行)
    print("<==9==>")
    class StarkConfig():
        def __init__(self,num):
            self.num = num
        def changelist(self,request):
            print(self.num,request)
        def run(self):
            self.changelist(999)
    
    class RoleConfig(StarkConfig):
        def changelist(self,request):
            print(666,self.num)
    
    class AdminSite():
        def __init__(self):
            self._registry = {}
        def register(self,k,v):
            self._registry[k] = v
    
    site = AdminSite()
    site.register('lyd',StarkConfig(19))
    site.register('yjl',StarkConfig(20))
    site.register('fgz',RoleConfig(33))
    # print(len(site._registry)) 
    
    for k,row in site._registry.items():
        row.changelist(5)
    for k,row in site._registry.items():
        row.run()
    
    
    # 10.读程序写结果.(不执行)
    print("<==10==>")
    class JustCounter:
    	__secretCount = 0
    	def count(self):
    		self.__secretCount += 1
    		print(self.__secretCount)
    	def count3():
    		print(JustCounter.__secretCount)
    
    class Bars(JustCounter):
    	def count2(self):
    		print(self.__secretCount)
    
    #  情况一
    # counter1 = JustCounter()
    # counter1.count() 
    # counter1.count()
    #  情况二
    # counter2 = Bars()
    # counter2.count()
    # counter2.count()
    #  情况三
    # JustCounter.count3()
    

      

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  • 原文地址:https://www.cnblogs.com/huangjiangyong/p/10920627.html
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