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⬆ Bump mypy from 1.19.1 to 1.20.1#15410

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YuriiMotov merged 1 commit intomasterfrom
dependabot/uv/mypy-1.20.1
Apr 22, 2026
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⬆ Bump mypy from 1.19.1 to 1.20.1#15410
YuriiMotov merged 1 commit intomasterfrom
dependabot/uv/mypy-1.20.1

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@dependabot dependabot Bot commented on behalf of github Apr 22, 2026

Bumps mypy from 1.19.1 to 1.20.1.

Changelog

Sourced from mypy's changelog.

Mypy 1.20.1

  • Always disable sync in SQLite cache (Ivan Levkivskyi, PR 21184)
  • Temporarily skip few base64 tests (Ivan Levkivskyi, PR 21193)
  • Revert dict.__or__ typeshed change (Ivan Levkivskyi, PR 21186)
  • Fix narrowing for match case with variadic tuples (Shantanu, PR 21192)
  • Avoid narrowing type[T] in type calls (Shantanu, PR 21174)
  • Fix regression for catching empty tuple in except (Shantanu, PR 21153)
  • Fix reachability for frozenset and dict view narrowing (Shantanu, PR 21151)
  • Fix narrowing with chained comparison (Shantanu, PR 21150)
  • Avoid narrowing to unreachable at module level (Shantanu, PR 21144)
  • Allow dangerous identity comparisons to Any typed variables (Shantanu, PR 21142)
  • --warn-unused-config should not be a strict flag (Ivan Levkivskyi, PR 21139)

Mypy 1.20.2

  • Use WAL with SQLite cache and fix close (Shantanu, PR 21154)
  • Adjust SQLite journal mode (Ivan Levkivskyi, PR 21217)
  • Correctly aggregate narrowing information on parent expressions (Shantanu, PR 21206)
  • Fix regression related to generic callables (Shantanu, PR 21208)
  • Fix regression by avoiding widening types in some contexts (Shantanu, PR 21242)
  • Fix slicing in non-strict optional mode (Shantanu, PR 21282)
  • mypyc: Fix match statement semantics for "or" pattern (Shantanu, PR 21156)
  • mypyc: Fix issue with module dunder attributes (Piotr Sawicki, PR 21275)
  • Initial support for Python 3.15.0a8 (Marc Mueller, PR 21255)

Acknowledgements

Thanks to all mypy contributors who contributed to this release:

  • A5rocks
  • Aaron Wieczorek
  • Adam Turner
  • Ali Hamdan
  • asce
  • BobTheBuidler
  • Brent Westbrook
  • Brian Schubert
  • bzoracler
  • Chris Burroughs
  • Christoph Tyralla
  • Colin Watson
  • Donghoon Nam
  • E. M. Bray
  • Emma Smith
  • Ethan Sarp
  • George Ogden
  • getzze
  • grayjk
  • Gregor Riepl
  • Ivan Levkivskyi

... (truncated)

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Bumps [mypy](https://github.com/python/mypy) from 1.19.1 to 1.20.1.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.19.1...v1.20.1)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.20.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot Bot added dependencies Pull requests that update a dependency file python:uv Pull requests that update python:uv code labels Apr 22, 2026
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codspeed-hq Bot commented Apr 22, 2026

Merging this PR will not alter performance

✅ 20 untouched benchmarks


Comparing dependabot/uv/mypy-1.20.1 (2116518) with master (840e462)1

Open in CodSpeed

Footnotes

  1. No successful run was found on master (c38782e) during the generation of this report, so 840e462 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report.

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📝 Docs preview

Last commit 2116518 at: https://86e57c3b.fastapitiangolo.pages.dev

@YuriiMotov YuriiMotov merged commit 7c6b79e into master Apr 22, 2026
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@YuriiMotov YuriiMotov deleted the dependabot/uv/mypy-1.20.1 branch April 22, 2026 12:41
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