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⬆ Bump mypy from 1.11.2 to 1.14.1#1375

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svlandeg merged 2 commits intomasterfrom
dependabot/pip/mypy-1.18.2
Oct 22, 2025
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⬆ Bump mypy from 1.11.2 to 1.14.1#1375
svlandeg merged 2 commits intomasterfrom
dependabot/pip/mypy-1.18.2

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@dependabot dependabot bot commented on behalf of github Oct 13, 2025 •
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Bumps mypy from 1.11.2 to 1.18.2.

Changelog

Sourced from mypy's changelog.

Mypy 1.18.2

  • Fix crash on recursive alias (Ivan Levkivskyi, PR 19845)
  • Add additional guidance for stubtest errors when runtime is object.__init__ (Stephen Morton, PR 19733)
  • Fix handling of None values in f-string expressions in mypyc (BobTheBuidler, PR 19846)

Acknowledgements

Thanks to all mypy contributors who contributed to this release:

  • Ali Hamdan
  • Anthony Sottile
  • BobTheBuidler
  • Brian Schubert
  • Chainfire
  • Charlie Denton
  • Christoph Tyralla
  • CoolCat467
  • Daniel Hnyk
  • Emily
  • Emma Smith
  • Ethan Sarp
  • Ivan Levkivskyi
  • Jahongir Qurbonov
  • Jelle Zijlstra
  • Joren Hammudoglu
  • Jukka Lehtosalo
  • Marc Mueller
  • Omer Hadari
  • Piotr Sawicki
  • PrinceNaroliya
  • Randolf Scholz
  • Robsdedude
  • Saul Shanabrook
  • Shantanu
  • Stanislav Terliakov
  • Stephen Morton
  • wyattscarpenter

I’d also like to thank my employer, Dropbox, for supporting mypy development.

Mypy 1.17

We’ve just uploaded mypy 1.17 to the Python Package Index (PyPI). Mypy is a static type checker for Python. This release includes new features 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.

... (truncated)

Commits
  • df05f05 remove +dev from version
  • 01a7a12 Update changelog for 1.18.2 (#19873)
  • ca5abf0 Typeshed cherry-pick: Make type of unitest.mock.Any a subclass of Any (#1...
  • 9d794b5 [mypyc] fix: inappropriate Nones in f-strings (#19846)
  • 2c0510c stubtest: additional guidance on errors when runtime is object.init (#19733)
  • 2f3f03c Bump version to 1.18.2+dev for point release
  • 7669841 Fix crash on recursive alias in indirection.py (#19845)
  • 03fbaa9 bump version to 1.18.1 due to wheels failure
  • b44a1fb removed +dev from version
  • 7197a99 Removed Unreleased in the Changelog for Release 1.18 (#19827)
  • Additional commits viewable in compare view

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@dependabot dependabot bot added dependencies Pull requests that update a dependency file python Pull requests that update Python code labels Oct 13, 2025
@github-actions github-actions bot added internal conflicts Automatically generated when a PR has a merge conflict labels Oct 13, 2025
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github-actions bot commented Oct 13, 2025

This pull request has a merge conflict that needs to be resolved.

@dependabot dependabot bot force-pushed the dependabot/pip/mypy-1.18.2 branch from 5fcc320 to a768469 Compare October 13, 2025 22:19
@github-actions github-actions bot removed the conflicts Automatically generated when a PR has a merge conflict label Oct 13, 2025
@dependabot
⬆ Bump mypy from 1.11.2 to 1.18.2
0498f7d 
Bumps [mypy](https://github.com/python/mypy) from 1.11.2 to 1.18.2.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.11.2...v1.18.2)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.18.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
@dependabot dependabot bot force-pushed the dependabot/pip/mypy-1.18.2 branch from a768469 to 0498f7d Compare October 21, 2025 07:25
@MorgenPronk
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MorgenPronk commented Oct 21, 2025

This PR bumps mypy to 1.18.2, which requires Python >= 3.9. Our CI still runs on Python 3.8, and pyproject.toml declares support for >=3.8, so tests fail on macOS 3.8.

Options:

  1. Drop Python 3.8 support (update requires-python and CI matrix).
  2. Pin mypy conditionally in requirements-tests.txt:
    mypy==1.11.2; python_version < "3.9"
    mypy==1.18.2; python_version >= "3.9"

Which approach do we prefer? Happy to help with a PR if needed.

@svlandeg
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svlandeg commented Oct 21, 2025

@MorgenPronk : did you check which is the latest mypy that still supports 3.8?

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MorgenPronk commented Oct 22, 2025 •
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Sorry @svlandeg, just checked.
Mypy 1.14.x is that last version that can be installed and run on Python 3.8. Type-checking code targeting Python 3.8 was supported up to 1.16.x (and partially 1.17.0), but those versions require Python 3.9+ to run.
So, if we want to support install Mypy as a dependency in a Python 3.8 environment, 1.14.x is the latest version we can use.

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svlandeg commented Oct 22, 2025

Then I suggest we simply bump to 1.14 for now, to reduce complexity.

svlandeg
svlandeg reviewed Oct 22, 2025
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@svlandeg svlandeg changed the title ⬆ Bump mypy from 1.11.2 to 1.18.2 ⬆ Bump mypy from 1.11.2 to 1.14.1 Oct 22, 2025
@svlandeg svlandeg merged commit f06f9c3 into master Oct 22, 2025
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@svlandeg svlandeg deleted the dependabot/pip/mypy-1.18.2 branch October 22, 2025 18:02
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