This issue tracker has been migrated to GitHub, and is currently read-only.
For more information, see the GitHub FAQs in the Python's Developer Guide.

Author abarnert
Recipients abarnert
Date 2015-12-26.23:28:34
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <>
As Guido pointed out on -ideas, hashing already uses the convention of `__hash__ is None` to declare a type unhashable, and `` already checks for that.

Meanwhile, setting `__iter__` and `__reversed__` to `None` already raises a `TypeError` on `iter` and `reversed` (although not with the most helpful description).

So, maybe that should be documented as the standard way to unimplement `__iter__` and `__reversed__`, and `` should check that the looked-up `__iter__` is not `None` (and presumably typecheckers doing the equivalent for both `Iterable` and `Reversible`)?
Date User Action Args
2015-12-26 23:28:34abarnertsetrecipients: + abarnert
2015-12-26 23:28:34abarnertsetmessageid: <>
2015-12-26 23:28:34abarnertlinkissue25958 messages
2015-12-26 23:28:34abarnertcreate