python类的一些相关BIF

issubclass、isinstance方法

>>> class A:
	pass

>>> class B(A):
	pass

>>> issubclass(B,A)
True
>>> b1 = B()
>>> isinstance(b1,B)
True

hasattr、getattr、setattr方法

>>> class C:
	def __init__(self,x = 0):
		self.x = x

		
>>> c1= C()
>>> hasattr(c1,'x')
True
>>> getattr(c1,'x')
0
>>> setattr(c1,'y','FishC')
>>> getattr(c1,'y','bucunzai')
'FishC'

property方法

>>> class C:
	def __init__(self,size = 10):
		self.size = size
	def getSize(self):
		return self.size
	def setSize(self,value):
		self.size = value
	def delSize(self):
		del self.size
	x = property(getSize,setSize,delSize)

	
>>> c1 = C()
>>> c1.getSize()
10
>>> c1.x
10
>>> c1.x = 18
>>> c1.size
18
>>> del c1.x

标签：__,python,self,BIF,相关,c1,class,def,size
来源： https://blog.csdn.net/weixin_43394725/article/details/113794075