AttributeError: type object 'Getset' has no attribute 'uid'

Question

class Getset:
    lname:str
    uid:int

    @classmethod
    def get_lname(cls):
        return cls.lname
    
    @classmethod
    def set_lname(cls,lname:str):
        cls.lname = lname
    
    @classmethod
    def get_uid(cls):
        return cls.uid
    
    @classmethod
    def set_uid(cls,uid:int):
        cls.uid = uid

i 已经声明了

gs = Getset()

并使用了

gs.get_uid()

。有时有效，有时无效