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Bumps the dev-dependencies group with 3 updates in the / directory: codespell, ruff and mypy.

Updates codespell from 2.4.2 to 2.4.3

Release notes

Sourced from codespell's releases.

v2.4.3

What's Changed

... (truncated)

Commits
  • 57b2140 Read only [tool.codespell] from TOML config (#3975)
  • 23b8d94 [pre-commit.ci] pre-commit autoupdate
  • 926c4d6 [pre-commit.ci] pre-commit autoupdate
  • 820a301 Merge pull request #3967 from codespell-project/peternewman-patch-1
  • 9fe42c9 Add common misspellings for reseeve->reserve to dictionary
  • 725173c [pre-commit.ci] pre-commit autoupdate
  • 86c13ee [pre-commit.ci] pre-commit autoupdate
  • 7b9f36c Bump actions/checkout from 6 to 7
  • bcc1b80 Add spelling corrections for simpe and variants.
  • 89584cc [pre-commit.ci] pre-commit autoupdate
  • Additional commits viewable in compare view

Updates ruff from 0.15.20 to 0.15.22

Release notes

Sourced from ruff's releases.

0.15.22

Release Notes

Released on 2026-07-16.

Preview features

  • [pycodestyle] Add an autofix for E402 (#22212)
  • [refurb] Allow subclassing builtins in stub files (FURB189) (#26812)
  • [ruff] Add rule to replace noqa comments with ruff:ignore (RUF105) (#26423)
  • [ruff] Add rule to use human-readable names in ruff:ignore comments (RUF106) (#26682)
  • [ruff] Add rule to use human-readable names in configuration selectors (RUF201) (#26772)

Bug fixes

  • [flake8-pyi] Fix false positive in __all__ (PYI053) (#26872)

Rule changes

  • [pylint] Ignore mutable type updates in redefined-loop-name (PLW2901) (#25733)

Performance

  • Avoid redundant lexer token bookkeeping (#26765)
  • Avoid redundant pending-indentation writes (#26774)
  • Avoid unnecessary identifier lookahead (#26525)
  • Reuse parser scratch buffers (#26798)

Documentation

  • Document argfile support (#26803)
  • [flake8-datetimez] Clarify naming guidance for datetime.today (DTZ002) (#26658)
  • [pycodestyle] Document E731 fix safety (#26847)
  • [ruff] Clarify intentional async contexts for unused-async (RUF029) (#26641)

Contributors

Install ruff 0.15.22

Install prebuilt binaries via shell script

</tr></table>

... (truncated)

Changelog

Sourced from ruff's changelog.

0.15.22

Released on 2026-07-16.

Preview features

  • [pycodestyle] Add an autofix for E402 (#22212)
  • [refurb] Allow subclassing builtins in stub files (FURB189) (#26812)
  • [ruff] Add rule to replace noqa comments with ruff:ignore (RUF105) (#26423)
  • [ruff] Add rule to use human-readable names in ruff:ignore comments (RUF106) (#26682)
  • [ruff] Add rule to use human-readable names in configuration selectors (RUF201) (#26772)

Bug fixes

  • [flake8-pyi] Fix false positive in __all__ (PYI053) (#26872)

Rule changes

  • [pylint] Ignore mutable type updates in redefined-loop-name (PLW2901) (#25733)

Performance

  • Avoid redundant lexer token bookkeeping (#26765)
  • Avoid redundant pending-indentation writes (#26774)
  • Avoid unnecessary identifier lookahead (#26525)
  • Reuse parser scratch buffers (#26798)

Documentation

  • Document argfile support (#26803)
  • [flake8-datetimez] Clarify naming guidance for datetime.today (DTZ002) (#26658)
  • [pycodestyle] Document E731 fix safety (#26847)
  • [ruff] Clarify intentional async contexts for unused-async (RUF029) (#26641)

Contributors

0.15.21

Released on 2026-07-09.

Preview features

... (truncated)

Commits

Updates mypy from 2.1.0 to 2.3.0

Changelog

Sourced from mypy's changelog.

Mypy Release Notes

Next Release

Packaging changes

Mypy 2.3

We've just uploaded mypy 2.3.0 to the Python Package Index (PyPI). Mypy is a static type checker for Python. This release includes new features, performance improvements and bug fixes. You can install it as follows:

python3 -m pip install -U mypy

You can read the full documentation for this release on Read the Docs.

The Upcoming Switch to the New Native Parser

We are planning to enable the new native parser (--native-parser) by default soon. We recommend that you test the native parser in your projects and report any issues in the mypy issue tracker.

Mypyc Free-threading Memory Safety

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.

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 librt.vecs.vec instead of list is often significantly faster, but note that vec is not (and likely won't be) fully memory safe, and the user is expected to avoid race conditions. The newly introduced librt.threading.Lock 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.

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.

Full list of changes:

  • Make attribute access memory safe on free-threaded builds (Jukka Lehtosalo, PR 21705)
  • Fix unsafe borrowing of instance attributes with free-threading (Jukka Lehtosalo, PR 21688)
  • Make list get/set item more memory safe on free-threaded builds (Jukka Lehtosalo, PR 21683)
  • Don't borrow list items on free-threaded builds (Jukka Lehtosalo, PR 21679)
  • Make multiple assignment from list memory-safe on free-threaded builds (Jukka Lehtosalo, PR 21684)

... (truncated)

Commits
  • 8aabf84 Drop +dev from version
  • 4d8ad2a Update changelog for 2.3 release (#21728)
  • 2c21546 [mypyc] Update documentation of race conditions under free threading (#21726)
  • a9f62a3 [mypyc] Make attribute access memory safe on free-threaded builds (#21705)
  • 0faa413 Use PYODIDE environment variable for Emscripten cross-compilation detection...
  • 3d75cdb [mypyc] Borrow final attributes more aggressively (#21702)
  • 24c237d [mypyc] Improve documentation of Final (#21713)
  • b5be217 [mypyc] Update free threading Python compatibility docs (#21711)
  • cbcb51a Narrow for frozendict membership check (#21709)
  • af2bc0f Sync typeshed (#21707)
  • Additional commits viewable in compare view

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@dependabot
chore(deps-dev): bump the dev-dependencies group across 1 directory w…
d02b02a 
…ith 3 updates

Bumps the dev-dependencies group with 3 updates in the / directory: [codespell](https://github.com/codespell-project/codespell), [ruff](https://github.com/astral-sh/ruff) and [mypy](https://github.com/python/mypy).


Updates `codespell` from 2.4.2 to 2.4.3
- [Release notes](https://github.com/codespell-project/codespell/releases)
- [Commits](codespell-project/codespell@v2.4.2...v2.4.3)

Updates `ruff` from 0.15.20 to 0.15.22
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.15.20...0.15.22)

Updates `mypy` from 2.1.0 to 2.3.0
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v2.1.0...v2.3.0)

---
updated-dependencies:
- dependency-name: codespell
  dependency-version: 2.4.3
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dev-dependencies
- dependency-name: ruff
  dependency-version: 0.15.22
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dev-dependencies
- dependency-name: mypy
  dependency-version: 2.3.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
...

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@dependabot dependabot Bot added dependencies Pull requests that update a dependency file python Pull requests that update python code labels Jul 20, 2026
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