Python类的特殊成员方法

class dog:
	‘‘‘这是狗的类‘‘‘
	def __init__(self,name):
		self.name = name
		self.__age = None


print(dog.__doc__)
#输出
这是狗的类

class dog:
	‘‘‘这是狗的类‘‘‘
	def __init__(self,name):
		self.name = name
		self.__age = None

	def __call__(self, *args, **kwargs):
		print(*args, **kwargs)


d = dog("小花")
d("小花","小黑","布丁")

class dog:
	‘‘‘这是狗的类‘‘‘
	def __init__(self,name):
		self.name = name
		self.__age = None

d = dog("小花")
print(dog.__dict__)#打印类里的所有属性，不包括实例属性
print(d.__dict__)#打印所有实例属性，不包括类属性

#输出
{‘__module__‘: ‘__main__‘, ‘__doc__‘: ‘这是狗的类‘, ‘__init__‘: <function dog.__init__ at 0x0000024E354F21E0>, ‘__dict__‘: <attribute ‘__dict__‘ of ‘dog‘ objects>, ‘__weakref__‘: <attribute ‘__weakref__‘ of ‘dog‘ objects>}
{‘name‘: ‘小花‘, ‘_dog__age‘: None}

class dog:
	‘‘‘这是狗的类‘‘‘
	def __init__(self,name):
		self.name = name
		self.__age = None

	def __str__(self):
		return "<obj:%s>" % self.name

d = dog("小花")
print(d)

#输出
<obj:小花>