release: 0.19.2 #3348
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release: 0.19.2 #3348
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When the Python iterator backing `PyIterator` has a `__length_hint__` special method, we can use this as a lower bound for Rust's `Iterator::size_hint` to e.g. support pre-allocation of collections. This is implemented using `PyObject_LengthHint` which is not available in the stable ABI and hence so is `Iterator::size_hint`. This should be fine since this is an optimization in any case and the stable ABI is expected to have slightly worse performance overall.
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🎉 this is all green, finally! CHANGELOG / version bump update also pushed. I'll move forwards with releasing this on Tuesday unless I hear a reason to wait. |
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Release is live! |
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Thank you for your work on this! I'll push this to Fedora ASAP, and will try to move some pyo3 users to this from old versions (< 0.19). |
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I think we're almost ready to release a 0.19.2 patch release to improve compatibility with 3.12.
Closes #3305
cc @decathorpe
I'd like to get just a few last PRs approved and merged before releasing; I will then cherry-pick them and go through the motions of the version bump / CHANGELOG prep in this PR:
float->f64conversions on non-abi3 #3345