Add draft version of 1.19 release notes#20296
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JukkaL merged 3 commits intopython:masterfrom Nov 27, 2025
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Co-authored-by: Jacopo Abramo <jacopo.abramo@gmail.com>
ilevkivskyi
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Nov 26, 2025
CHANGELOG.md
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| - Switch to a more dynamic SCC processing logic (Ivan Levkivskyi, PR [20053](https://github.com/python/mypy/pull/20053)) | ||
| - Try some aliases speed-up (Ivan Levkivskyi, PR [19810](https://github.com/python/mypy/pull/19810)) | ||
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| ### Fixed‑Format Cache (Experimental) |
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The whole point of these PRs was to make FF cache non-experimental. Moreover, we should announce that the default will be flipped in the next release.
ilevkivskyi
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Nov 26, 2025
CHANGELOG.md
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| - Enable SIMD for `librt.base64` on x86-64 (Jukka Lehtosalo, PR [20244](https://github.com/python/mypy/pull/20244)) | ||
| - Use faster base64 encode implementation in `librt.base64` (Jukka Lehtosalo, PR [20237](https://github.com/python/mypy/pull/20237)) | ||
| - Import `librt.base64` capsule automatically if needed (Jukka Lehtosalo, PR [20233](https://github.com/python/mypy/pull/20233)) | ||
| - Add minimal, experimental `librt.base64` module (Jukka Lehtosalo, PR [20226](https://github.com/python/mypy/pull/20226)) |
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IIUC all the base64 stuff is still "private" and should not be used.
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Yes, these shouldn't be included in the release notes yet.
JukkaL
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Nov 26, 2025
CHANGELOG.md
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| - Import `librt.base64` capsule automatically if needed (Jukka Lehtosalo, PR [20233](https://github.com/python/mypy/pull/20233)) | ||
| - Add minimal, experimental `librt.base64` module (Jukka Lehtosalo, PR [20226](https://github.com/python/mypy/pull/20226)) | ||
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| ### Mypyc: Support for `__getattr__` and `__setattr__` |
JukkaL
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Nov 27, 2025
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I'll do various edits in a follow-up PR, probably later today.
JukkaL
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Nov 28, 2025
The first draft was added in #20296.
p-sawicki
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Nov 28, 2025
Added a draft version with the commits filtered to remove internal changes and grouped into sections. --------- Co-authored-by: Jacopo Abramo <jacopo.abramo@gmail.com>
p-sawicki
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Nov 28, 2025
The first draft was added in #20296.
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Added a draft version with the commits filtered to remove internal changes and grouped into sections.