反射的基本使用

classFoo(object):

def__init__(self,name,age):

self.name = name

self.age = age

defshow(self):

return"%s-%s"%(self.name,self.age)

obj = Foo("sunziheng",20)

f = obj.show()

print(f)

func =getattr(obj,"show")

print(func())

v =getattr(obj,"name")

print(v)

print(hash(obj))

print(hasattr(obj,"sunziheng"))# False 判断这个对象里面有没有这个属性 有返回 Ture 没有返回False

print(hasattr(obj,"age"))#True

setattr(obj,'k1','v1')# 给对象设置一个 k1 = v1 的属性

print(obj.k1)

#print(obj.v1) #AttributeError: 'Foo' object has no attribute 'v1'

# delattr(obj,"name") # 删除对象属性

# print(obj.name)

a =20

obj.c = a#Python 可以直接给对象设置属性

print(obj.c)

print(hasattr(obj,"c"))