Message257305
| Author |
abarnert |
| Recipients |
abarnert, martin.panter, ncoghlan, r.david.murray, serhiy.storchaka |
| Date |
2016年01月01日.21:29:09 |
| SpamBayes Score |
-1.0 |
| Marked as misclassified |
Yes |
| Message-id |
<1451683749.6.0.596457699138.issue25958@psf.upfronthosting.co.za> |
| In-reply-to |
| Content |
> Also, if I understand your problem, Container would also be susceptible in theory
You're right, but not in the details.
Being iterable (whether via __iter__ or via the old-style sequence protocol) makes you a container. But, again, false negatives for Container aren't a problem.
But blocking that by setting __contains__ = None makes you a Container but not a container, the same kind of false positive as #25864. That's exactly why I split off this bug from that one--that one only fixes __iter__ and __reversed__, but it's possible that a more general solution is needed. (Or, of course, maybe we don't need anything more general, we just need to expand it to __iter__, __reversed__, and __contains__.) |
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