class Foo:

    f = "类的静态变量"

    def  __init__(self,name,age):

        self.name =  name

        self.age = age

    def  say_hi(self):

        print("hi %s"%self.name)

obj = Foo("egon","")

#检测是否有某属性

print(hasattr(obj,"name"))

print(hasattr(obj,"say_hi"))

#获取某属性

print(getattr(obj,"name"))

#在获取函数属性时，getattr（）或得到的是方法的地址，因此运行此函数需要加括号

getattr(obj,"say_hi")()

#添加属性

setattr(obj,"sb","egon")

print(obj.__dict__)

#删除属性

delattr(obj,"sb")

print(obj.__dict__)