Python 空类实例和对象实例之间的区别？

我创建了以下空类

A

和该类的一个实例

A

：

>>A类：
...     通过
... 
>>>a=a（）

据我所知，省略基类会导致类继承自

对象

。我试图通过以下方式验证这一点：

>>a.\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu__
(,)

因此，我还创建了

对象的一个实例

：

>b=object（）

但是，比较

a

和

b

，我注意到使用

dir

获取每个对象属性会导致

a

和

b

的不同列表：

目录（a） “UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU“，”模块“，”新“，”减少“，”减少“，”前“，”报告“，”设置属性“，”大小“，”str“，”子类钩子“，”weakref“] >>>处长（b） “UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU"新","减少","减少","增加","报告","设置属性","大小","str","子类钩子"

a

包含

b

中的每个属性以及另外三个属性。仅在

a

中找到的其他属性包括：

设置（目录（a））。差异（设置（目录（b））） {''''''''''''''''''''''''''''''''''''''''''

---

如果类

A

是空的，并且继承自

对象
？
即使
A
是空的，它仍然是一个用户定义的类，它与
对象
（一个必需的实现定义的类）有一些明显的区别，顺便问一下，这是否应该立即解决问题？它们来自
类型
。除非您打算编写自己的Python实现，否则这并不是您真正需要担心的事情你是什么意思，它们来自
类型
？
A
和
object
似乎属于同一类
type
和
type（A）是type（object）
返回
True
type
是使用
object
作为基类生成
A
的元类<代码>A类：pass
相当于
A=type（'A'，（object，），{}）
。