And parents can have parents, creating a transitive subclass relation, conveniently accessible with the built-in function issubclass .

并且父亲还可以有父亲，创建一个传递的子类关系后，可以方便地利用内建的issubclass函数来判断继承关系。

youdao

And parents can have parents, creating a transitive subclass relation, conveniently accessible with the built-in function issubclass .

并且父亲还可以有父亲，创建一个传递的子类关系后，可以方便地利用内建的issubclass函数来判断继承关系。

youdao