10 Pull requests merged by 3 people

• Use normalized tuples for fallback calculation

  #19111 merged Jul 22, 2025

• Fix decorated methods with self-types in protocols

  #19484 merged Jul 21, 2025

• Retain None as constraints bottom if no bottoms were provided

  #19485 merged Jul 21, 2025

• Fix "ignored exception in hasattr" in dmypy

  #19428 merged Jul 18, 2025

• Uninhabited should have all attributes

  #19300 merged Jul 18, 2025

• Micro-optimize type indirection visitor

  #19460 merged Jul 18, 2025

• [mypyc] Add script to compile mypy with trace logging and run mypy

  #19475 merged Jul 17, 2025

• Micro-optimize TypeTraverserVisitor

  #19459 merged Jul 17, 2025

• Micro-optimize chained plugin

  #19464 merged Jul 17, 2025

• Micro-optimize ExpandTypeVisitor

  #19461 merged Jul 17, 2025

6 Pull requests opened by 5 people

• [match-case] Fix narrowing of class pattern with union-argument.

  #19473 opened Jul 17, 2025

• Add `collections._tuplegetter` support

  #19479 opened Jul 19, 2025

• feat: `__repr__` method for RefExpr and NameExpr

  #19486 opened Jul 21, 2025

• When selecting an overload item for constraint template matching, treat any ParamSpec in the template as free

  #19487 opened Jul 21, 2025

• Move self argument checks to a later phase - after decorator application, if any

  #19490 opened Jul 23, 2025

• Fix #19491, crash when using enable_error_code value of wrong type in pyproject.toml

  #19494 opened Jul 24, 2025

9 Issues closed by 6 people

• `class S(tuple[*tuple[()]])` crashes mypy

  #19105 closed Jul 22, 2025

• The "dummy" variable _ is type-checked in assignments

  #19488 closed Jul 22, 2025

• False Positives in Protocol Assignability Check Where `Self` Is a Parameter of a Decorated Method (1.17.0)

  #19482 closed Jul 21, 2025

• 1.17.0 regression: dict literals incompatible with Sequence[TypedDict]

  #19483 closed Jul 21, 2025

• False positive `statement is unreachable` in try-finally related to KeyboardInterrupt

  #13104 closed Jul 20, 2025

• TypeError: analyze_member_access() got an unexpected keyword argument 'msg'

  #19478 closed Jul 18, 2025

• AssertionError raised after #19248

  #19425 closed Jul 18, 2025

• Document how to profile and optimize mypy

  #19472 closed Jul 18, 2025

• runtime flag to disable all `# type: ignore` comments

  #19476 closed Jul 17, 2025

8 Issues opened by 7 people

• Inconsistent assignability of callable with optional keywords to positional-only callback

  #19493 opened Jul 23, 2025

• Regression: dict | None or dict fallback breaks type inference for nested dicts after PR #19249

  #19492 opened Jul 23, 2025

• Crash when using an invalid 'enable_error_code' value in pyproject.toml

  #19491 opened Jul 23, 2025

• `--no-incremental` still writes `.mypy_cache`

  #19489 opened Jul 22, 2025

• [plugins/help] Triggering node visits?

  #19481 opened Jul 20, 2025

• Assignability of overloaded implementation to `Proto[**P](Protocol)` is overload-order-sensitive

  #19480 opened Jul 19, 2025

• Startup error: occasional "AssertionError: Cannot find component 'SSL' for 'OpenSSL.SSL.Context'"

  #19477 opened Jul 17, 2025

• More specific inline dict type inference can fail on 1.17.0

  #19474 opened Jul 17, 2025

26 Unresolved conversations

Sometimes conversations happen on old items that aren’t yet closed. Here is a list of all the Issues and Pull Requests with unresolved conversations.

• Extending `TraverserVisitor` causes `TypeError: interpreted classes cannot inherit from compiled traits`

  #19456 commented on Jul 17, 2025 • 0 new comments

• [match-case] mypy ignores missing `@runtime_checkable` in class-pattern

  #19469 commented on Jul 17, 2025 • 0 new comments

• [match-case]/[isinstance] narrowing logic against the special `AnyCallable` Protocol differs from `callable()` check

  #19470 commented on Jul 17, 2025 • 0 new comments

• 1.17 Release Planning

  #19306 commented on Jul 18, 2025 • 0 new comments

• inline configurations (mypy comments) in strings still work

  #19441 commented on Jul 19, 2025 • 0 new comments

• Add ReturnType-like utility for getting function return types

  #8385 commented on Jul 19, 2025 • 0 new comments

• False positive `comparison-overlap`

  #15509 commented on Jul 21, 2025 • 0 new comments

• Internal error: KeyError 'setter_type' during node deserialization

  #19359 commented on Jul 22, 2025 • 0 new comments

• Enable --warn-unreachable in --strict in Mypy 2.0

  #18078 commented on Jul 23, 2025 • 0 new comments

• Can JSON format output and command line parameter options for -- disable-error-code all be supported?

  #17446 commented on Jul 23, 2025 • 0 new comments

• Add a way to ignore `type: ignore`, disabled error codes

  #13201 commented on Jul 23, 2025 • 0 new comments

• Generic subclass of a generic class, using a constrained TypeVar is mishandled

  #17757 commented on Jul 24, 2025 • 0 new comments

• (🎁) Flag to make default return type `None` instead of `Any`

  #9413 commented on Jul 24, 2025 • 0 new comments

• Introduce temporary named expressions for `match` subjects

  #18446 commented on Jul 21, 2025 • 0 new comments

• Patch `check_op_reversible` to support `tuple` subclasses.

  #19046 commented on Jul 19, 2025 • 0 new comments

• Add a flag `--enable-all-error-codes`, which enables all error codes

  #19048 commented on Jul 23, 2025 • 0 new comments

• feat: new mypyc primitive for weakref.ref

  #19099 commented on Jul 20, 2025 • 0 new comments

• Check slots assignments on self types

  #19332 commented on Jul 21, 2025 • 0 new comments

• Do not display import-related errors after module-level always false assert

  #19347 commented on Jul 21, 2025 • 0 new comments

• Enable --pretty by default

  #19380 commented on Jul 20, 2025 • 0 new comments

• perf: try to cache inner contexts of overloads

  #19408 commented on Jul 23, 2025 • 0 new comments

• perf: deduplicate `fast_container_type` and `fast_dict_type` items before joining

  #19409 commented on Jul 20, 2025 • 0 new comments

• Support attribute access on enum members correctly

  #19422 commented on Jul 18, 2025 • 0 new comments

• [PEP 696] Fix swapping TypeVars with defaults.

  #19449 commented on Jul 23, 2025 • 0 new comments

• [PEP 695] Fix incorrect Variance Computation with Polymorphic Methods.

  #19466 commented on Jul 23, 2025 • 0 new comments

• [match-case] fix matching against `typing.Callable` and `Protocol` types.

  #19471 commented on Jul 20, 2025 • 0 new comments