Files
bracket/backend
dependabot[bot] 76f3054446 Bump mypy from 2.1.0 to 2.2.0 in /backend (#1777)
Bumps [mypy](https://github.com/python/mypy) from 2.1.0 to 2.2.0.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/python/mypy/blob/master/CHANGELOG.md">mypy's
changelog</a>.</em></p>
<blockquote>
<h1>Mypy Release Notes</h1>
<h2>Next Release</h2>
<h3>Packaging changes</h3>
<ul>
<li>No longer provide mypyc-accelerated wheels for macOS x86_64
[mypyc-wheels <a
href="https://redirect.github.com/python/mypy/issues/119">#119</a>](<a
href="https://redirect.github.com/mypyc/mypy_mypyc-wheels/pull/119">mypyc/mypy_mypyc-wheels#119</a>)</li>
</ul>
<h2>Mypy 2.3</h2>
<p>We've just uploaded mypy 2.3.0 to the Python Package Index (<a
href="https://pypi.org/project/mypy/">PyPI</a>).
Mypy is a static type checker for Python. This release includes new
features, performance
improvements and bug fixes. You can install it as follows:</p>
<pre><code>python3 -m pip install -U mypy
</code></pre>
<p>You can read the full documentation for this release on <a
href="http://mypy.readthedocs.io">Read the Docs</a>.</p>
<h3>The Upcoming Switch to the New Native Parser</h3>
<p>We are planning to enable the new native parser
(<code>--native-parser</code>) by
default soon. We recommend that you test the native parser in your
projects and report
any issues in the <a href="https://github.com/python/mypy/issues">mypy
issue tracker</a>.</p>
<h3>Mypyc Free-threading Memory Safety</h3>
<p>Free-threaded Python builds that don't have the GIL require
additional synchronization
primitives or lock-free algorithms to ensure memory safety when there
are race conditions
(for example, when a thread reads a list item while another thread
writes the same list
item concurrently). This release greatly improves memory safety of free
threading.</p>
<p>List operations are now memory-safe on free threaded Python builds,
even in the presence of
race conditions. This has some performance cost. For list-heavy
workloads, using
<code>librt.vecs.vec</code> instead of list is often significantly
faster, but note that <code>vec</code> is not
(and likely won't be) fully memory safe, and the user is expected to
avoid race conditions.
The newly introduced <code>librt.threading.Lock</code> helps with this.
Using variable-length tuples
can also be more efficient than lists, since tuples are immutable and
don't require
expensive synchronization to ensure memory safety.</p>
<p>Instance attribute access is also (mostly) memory safe now on
free-threaded builds in
the presence of race conditions. We are planning to fix the remaining
unsafe cases in a
future release.</p>
<p>Full list of changes:</p>
<ul>
<li>Make attribute access memory safe on free-threaded builds (Jukka
Lehtosalo, PR <a
href="https://redirect.github.com/python/mypy/pull/21705">21705</a>)</li>
<li>Fix unsafe borrowing of instance attributes with free-threading
(Jukka Lehtosalo, PR <a
href="https://redirect.github.com/python/mypy/pull/21688">21688</a>)</li>
<li>Make list get/set item more memory safe on free-threaded builds
(Jukka Lehtosalo, PR <a
href="https://redirect.github.com/python/mypy/pull/21683">21683</a>)</li>
<li>Don't borrow list items on free-threaded builds (Jukka Lehtosalo, PR
<a
href="https://redirect.github.com/python/mypy/pull/21679">21679</a>)</li>
<li>Make multiple assignment from list memory-safe on free-threaded
builds (Jukka Lehtosalo, PR <a
href="https://redirect.github.com/python/mypy/pull/21684">21684</a>)</li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/python/mypy/commit/b3c4a5b93adb49f979ab553fffebae7179cefa74"><code>b3c4a5b</code></a>
Mark release</li>
<li><a
href="https://github.com/python/mypy/commit/396f5082ac677a5115fbd6a0122328a6711f73dd"><code>396f508</code></a>
[Chore] Update changelog for 2.2 (<a
href="https://redirect.github.com/python/mypy/issues/21691">#21691</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/9592a9ea65a9502b14ac3094b28f9e0e3a2e500a"><code>9592a9e</code></a>
Upload wasm wheels to PyPI (<a
href="https://redirect.github.com/python/mypy/issues/21671">#21671</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/1dc69620d9e827b015e6486114e0aaff7ec2d990"><code>1dc6962</code></a>
Bump ast-serialize to 0.6.0 (<a
href="https://redirect.github.com/python/mypy/issues/21664">#21664</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/96a791310d47575827e44d10360505d8e23807b0"><code>96a7913</code></a>
Bump librt to 0.12.0 (<a
href="https://redirect.github.com/python/mypy/issues/21663">#21663</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/5ef090270579013c337a9bcc79e2c58417f09538"><code>5ef0902</code></a>
Fix the exportjson tool (.ff cache to .json conversion) (<a
href="https://redirect.github.com/python/mypy/issues/21628">#21628</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/8d621adb954731ba76b25bf7130275f3cadbb81a"><code>8d621ad</code></a>
Support --shadow-file with --native-parser (<a
href="https://redirect.github.com/python/mypy/issues/21623">#21623</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/74ecdd8ecc9bee271eab49948436af63751ed1ff"><code>74ecdd8</code></a>
Sync typeshed (<a
href="https://redirect.github.com/python/mypy/issues/21612">#21612</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/0cd154158ab2829a2f8c7a2728c7d4ed55e8f193"><code>0cd1541</code></a>
[mypyc] Make function wrappers thread-safe on free-threaded builds (<a
href="https://redirect.github.com/python/mypy/issues/21620">#21620</a>)</li>
<li><a
href="https://github.com/python/mypy/commit/22a9cfd1595798810e27ef145ea4c989ccdcc883"><code>22a9cfd</code></a>
[mypyc] Make list remove and index thread-safe on free-threaded builds
(<a
href="https://redirect.github.com/python/mypy/issues/21614">#21614</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/python/mypy/compare/v2.1.0...v2.2.0">compare
view</a></li>
</ul>
</details>
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