> >> The `__dict__` is needed to store the field names -- did you add > `__dict__` to the > >> `__slots__`?
Nope — though the error indicated that I couldn’t add anything to __slots__ when subclassing tuple. But I may have misunderstood the error. Also, frankly, I’m completely confused by __slots__ : looking at the namedtuple implementation, it sets slots to an empty tuple. But it does have instance attributes without a __dict__. > Maybe I'm being an ignoramus but: how would it be possible to even use > slots? Slots > > are descriptors living in the class namespace. You don't know ahead of > time what the > > member names are, so you can't use slots, right? The idea there is that you’d store the field names in a slot, and dynamically return the values in __getattr__. In that case, frozen dict would be nice :-) Anyway — good idea? I don’t know, ‘cause I did get it to work :-) -CHB > You can use them, just make sure one of the slots is `__dict__`. > > Of course, by adding `__dict__` you lose most (all?) of the advantages of > using `__slots__` in the first place. > > -- > ~Ethan~ > _______________________________________________ > Python-ideas mailing list -- python-ideas@python.org > To unsubscribe send an email to python-ideas-le...@python.org > https://mail.python.org/mailman3/lists/python-ideas.python.org/ > Message archived at > https://mail.python.org/archives/list/python-ideas@python.org/message/QM7MIHKP2GSBN6TYMPDIFKGHGC7KEH6E/ > Code of Conduct: http://python.org/psf/codeofconduct/ > -- Christopher Barker, PhD (Chris) Python Language Consulting - Teaching - Scientific Software Development - Desktop GUI and Web Development - wxPython, numpy, scipy, Cython
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