Py003-01-11反射

反射

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class People:
    def __init__(self,name,age):
        self.name = name
        self.age = age

    def talk(self):
        print('%s is talking '%self.name)


obj = People('hjx',18)


# 判断是否含有属性和方法
print(hasattr(obj,'name'))
print(hasattr(obj,'talk'))

# 拿到对象的属性或方法
# print(getattr(obj,'namexxxx')) 报错因为 没有该属性
# 兜底写法
print(getattr(obj,'namexxxx',None))


# 修改对象的属性
setattr(obj,'sex','man')
print(obj.sex)

# 删除对象的属性
delattr(obj,'age')
print(obj.__dict__)

# 类的属性也是可以获取的
print(getattr(People,'city'))