Message292358
| Author |
MSeifert |
| Recipients |
MSeifert, alex, rhettinger, serhiy.storchaka, terry.reedy, vstinner |
| Date |
2017年04月26日.14:54:44 |
| SpamBayes Score |
-1.0 |
| Marked as misclassified |
Yes |
| Message-id |
<1493218484.59.0.317975840701.issue26828@psf.upfronthosting.co.za> |
| In-reply-to |
| Content |
> zip.__length_hint__() must return NotImplemented or raise TypeError if any of iterators don't implement __length_hint__ or its __length_hint__() returns NotImplemented or raises TypeError.
> And what should return zip(range(3), range(2**1000)).__length_hint__()? I expect 3, not OverflowError.
That's actually non-trivial because PyObject_LengthHint just returns a Py_ssize_t. To recover NotImplemented will be complicated and there's no way to discriminate if the OverflowError happened in PyObject_LengthHint or in the called __length_hint__.
But TypeError is correctly re-raised in the tests I made. |
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