Steven D'Aprano wrote:
> On Sat, Mar 05, 2022 at 04:42:55PM -, Jason Madden wrote:
> > zope.interface relies on this behaviour.
> > The example you give shows that Interface is a class. It merely has a
> metaclass which is not `type`. (I presume that is what's going on
> behind the scenes.)
Yes, it's supposed to work. There's tons of special code to support it, and
documentation (e.g.
https://docs.python.org/3/reference/datamodel.html?highlight=__mro_entries__#resolving-mro-entries
).
Now, I think it was an attempt at getting too fancy, but we can't remove
the functionality without d
On Sat, Mar 05, 2022 at 04:42:55PM -, Jason Madden wrote:
> zope.interface relies on this behaviour.
The example you give shows that Interface is a class. It merely has a
metaclass which is not `type`. (I presume that is what's going on
behind the scenes.)
I'm asking about the example that
Good to hear from you, Serhiy. I hope you and your family are safe.
On Sat, Mar 5, 2022 at 1:29 AM Serhiy Storchaka wrote:
> Currently the class can inherit from arbitrary objects, not only types.
> If the object was not designed for this you can get a mysterious
> mistake, e g.:
>
> >>> class
Steven D'Aprano wrote:
> On Sat, Mar 05, 2022 at 11:27:44AM +0200, Serhiy Storchaka wrote:
> > Currently the class can inherit from arbitrary objects, not only types.
> > Is that intentionally supported?
> I know that metaclasses do not have to be actual classes, they can be
> any callable with th
On Sat, Mar 05, 2022 at 11:27:44AM +0200, Serhiy Storchaka wrote:
> Currently the class can inherit from arbitrary objects, not only types.
Is that intentionally supported?
I know that metaclasses do not have to be actual classes, they can be
any callable with the correct signature, but I didn
Currently the class can inherit from arbitrary objects, not only types.
If the object was not designed for this you can get a mysterious
mistake, e g.:
>>> class A(1): ...
...
Traceback (most recent call last):
File "", line 1, in
TypeError: int() takes at most 2 arguments (3 given)
If the
