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  • python面向对象01

    如图的继承关系,然后验证经典类与新式类在查找一个属性时的搜索顺序
    

    class B:
    	# def test(self):
    	# 	print("from B")
    	pass
    class C:
    	# def test(self):
    	# 	print("from C")
    	pass
    class D(B,C):
    	# def test(self):
    	# 	print("from D")
    	pass
    class E(B,C):
    	def test(self):
    		print("from E")
    	pass
    class F(D,E):
    	# def test(self):
    	# 	print("from F")
    	pass
    f = F()
    f.test()
    # new class (广度优先)
    ''' F==>D==>E==>B==>C '''
    # classical class (深度优先)
    ''' F==>D==>B==>C==>E '''
    
    基于多态的概念来实现linux中一切皆问题的概念:文本文件,进程,磁盘都是文件,然后验证多态性
    
    class file(object):
    	def __init__(self,contents):
    		self.contents = contents
    	def cat(self):
    		print("contents:%s"%(self.contents))
    class process(file):
    	file_type = 'pid'
    	def cat(self):
    		print("file_type : %s" %self.file_type)
    		#三种方法 调用父类对象,1.super附带当前类名、self代表父类 2.super不附带任何参数 3.父类.方法(self)
    		super(process, self).cat()
    		#super().cat()
    		# file.cat(self)
    class disk(file):
    	file_type = 'disk'
    	def cat(self):
    		print("file_type : %s" %self.file_type)
    		#三种方法 调用父类对象,1.super附带当前类名、self代表父类 2.super不附带任何参数 3.父类.方法(self)
    		super(disk, self).cat()
    		#super().cat()
    		# file.cat(self)
            
    def cat_file(obj):
    	''' 调用函数绑定方法 '''
        obj.cat()
    
    proc1 = process("some things")
    disk1 = disk("disgusting things")
    
    cat_file(proc1)
    cat_file(disk1)
    
    定义老师类,把老师的属性:薪资,隐藏起来,然后针对该属性开放访问接口
    苑昊老师有多种癖好,把这种癖好隐藏起来,然后对外提供访问接口
    而且以后还会苑昊老师培养很多其他的癖好,对外开放修改接口,可以新增癖好,并且需要保证新增的癖好都是字符串类型,否则无法增加成功。
    
    class Teacher(object):
    	__salary = 100
    	__hobby = ["kiss egon's ass","和EGON睡觉"]
    	def __init__(self,name,age,):
    		self.name,self.age = name,age
    	def get_salary(self):
    		return self.__salary
    	def get_hobby(self):
    		for x in self.__hobby:
    			yield x
    	def add_hobby(self,new_hobby):
    		if type(new_hobby) == str:
    			self.__hobby.append(new_hobby)			
    		else:
    			print("error!")
    t = Teacher("苑昊", 16)
    print(t.get_salary())
    print("[",t.name,"]","hobby list
    -----")
    for x in t.get_hobby():
    	print(x)
    print("-----")
    t.add_hobby("女装")
    print(t.get_salary())
    print("[",t.name,"]","hobby list
    -----")
    for x in t.get_hobby():
    	print(x)
    print("-----")
    
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  • 原文地址:https://www.cnblogs.com/anyanyaaaa/p/6740560.html
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