11 Pull requests merged by 10 people

• Bump version to 1.18.0+dev

  #19371 merged Jul 4, 2025

• [mypyc] Fix comparison of tuples with different lengths

  #19372 merged Jul 4, 2025

• [mypyc] Document some of our inheritance conventions

  #19370 merged Jul 3, 2025

• [mypyc] Speed up generator allocation by using a per-type freelist

  #19316 merged Jul 3, 2025

• [mypyc] Fix AttributeError in async try/finally with mixed return paths

  #19361 merged Jul 2, 2025

• feat: new mypyc primitives for str.count

  #19264 merged Jul 1, 2025

• [mypyc] Implement list.clear() primitive

  #19344 merged Jul 1, 2025

• Sync typeshed

  #19364 merged Jul 1, 2025

• Metaclass conflict check improvements

  #17682 merged Jul 1, 2025

• Do not show protocol compatibility note against unpacked sequence or mapping

  #19358 merged Jun 30, 2025

• Remove unnecessary workarounds from bind_self()

  #19356 merged Jun 29, 2025

8 Pull requests opened by 5 people

• Support `_value_` as a fallback for ellipsis Enum members

  #19352 opened Jun 27, 2025

• [mypyc] Fix exception swallowing in async try/finally blocks with await

  #19353 opened Jun 28, 2025

• Fix wrong names listed in "too few arguments" message

  #19354 opened Jun 29, 2025

• Fix `Enum.value` inference for `Enum`s with `@cache`d methods

  #19374 opened Jul 4, 2025

• [mypyc] Implement `str.lower()` and `str.upper()` primitive

  #19375 opened Jul 4, 2025

• [mypyc] Call generator helper method directly in await expression

  #19376 opened Jul 4, 2025

• [mypyc] Fix error value check for GetAttr that allows nullable values

  #19378 opened Jul 4, 2025

• Support type checking code fragment in profile script

  #19379 opened Jul 4, 2025

7 Issues closed by 5 people

• (🎁) Mypy too conservative with base class compatibility (Definition of in base class is incompatible)

  #12314 closed Jul 4, 2025

• False positive unreachable after type:ignore (also possibly invalid erorr code)

  #12785 closed Jul 4, 2025

• Better binding with implicit type variables

  #19367 closed Jul 4, 2025

• Inconsistent behaviour when updating a typed dict with a "subset" typeddict

  #19365 closed Jul 3, 2025

• Offer a simpler way to resolve metaclass conflicts

  #14033 closed Jul 1, 2025

• dmypy does not catch `--warn-unused-ignores` in successive runs

  #19363 closed Jun 30, 2025

• Unexpected error using Union[] as the argument to the value field of a dictionary

  #19357 closed Jun 29, 2025

9 Issues opened by 9 people

• 'Subclass of "A" and "B" cannot exist: would have incompatible method signatures' is usually wrong

  #19377 opened Jul 4, 2025

• Type statement inside class scope not able to reference class generics

  #19373 opened Jul 4, 2025

• Assignment to field of typed dict doesn't change its (field) type

  #19369 opened Jul 2, 2025

• `Enum.value` typed as `Any` when using `functools.cache`

  #19368 opened Jul 1, 2025

• `type: ignore` command not recognized after other comment

  #19366 opened Jul 1, 2025

• Order dependent `override` error when subclassing with multiple typevars with defaults

  #19362 opened Jun 30, 2025

• Allow defining type for dynamically generated types.

  #19360 opened Jun 30, 2025

• Internal error: KeyError 'setter_type' during node deserialization

  #19359 opened Jun 30, 2025

• Code after `yield from` a generator that cannot end should be unreachable

  #19355 opened Jun 29, 2025

32 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.

• Add support for Pydantic models in `stubgen`

  #19095 commented on Jul 3, 2025 • 14 new comments

• Combine the revealed types of multiple iteration steps in a more robust manner.

  #19324 commented on Jul 4, 2025 • 8 new comments

• Infer empty list without annotation for `__slots__` and module `__all__`

  #19348 commented on Jun 28, 2025 • 3 new comments

• Fix a bug where inline configurations of error codes would lose their values if accompanied by another inline configuration.

  #19075 commented on Jul 4, 2025 • 3 new comments

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

  #19347 commented on Jul 4, 2025 • 2 new comments

• [mypyc] Generate introspection signatures for compiled functions

  #19307 commented on Jul 3, 2025 • 1 new comment

• Adds positional and kwarg only symbols into generated stubs

  #19340 commented on Jul 2, 2025 • 0 new comments

• Check slots assignments on self types

  #19332 commented on Jul 4, 2025 • 0 new comments

• Check property decorators stricter

  #19313 commented on Jul 4, 2025 • 0 new comments

• Follow-up after #19025: test and cleanup

  #19294 commented on Jun 30, 2025 • 0 new comments

• Mark code after for loops that never end as unreachable

  #19287 commented on Jun 29, 2025 • 0 new comments

• Handle `__hash__ = None` in somewhat more intuitive fashion

  #19168 commented on Jul 4, 2025 • 0 new comments

• Use normalized tuples for fallback calculation

  #19111 commented on Jul 4, 2025 • 0 new comments

• Fix/attrs init overload

  #19104 commented on Jul 4, 2025 • 0 new comments

• feat: new mypyc primitive for weakref.ref

  #19099 commented on Jun 30, 2025 • 0 new comments

• Introduce temporary named expressions for `match` subjects

  #18446 commented on Jun 28, 2025 • 0 new comments

• Add GitHub annotations format for `--output`

  #17771 commented on Jun 30, 2025 • 0 new comments

• Fix union inference of generic class and its generic type

  #17310 commented on Jun 28, 2025 • 0 new comments

• Fix error on instance property and init-only variable with the same name in a dataclass

  #17219 commented on Jun 28, 2025 • 0 new comments

• "Name already defined" for PySide6 Property

  #17406 commented on Jul 4, 2025 • 0 new comments

• (🐞) Invalid per-module options in inline configuration are silently ignored

  #12342 commented on Jul 4, 2025 • 0 new comments

• MyPy fails on Python 3.14 PEP 750 template string (tstring, t-string), e.g. `t'{42}'`

  #19329 commented on Jul 4, 2025 • 0 new comments

• 1.17 Release Planning

  #19306 commented on Jul 4, 2025 • 0 new comments

• Allow `Final` in type arguments to avoid shadowing arguments - disallow reassignment of function parameters

  #11076 commented on Jul 3, 2025 • 0 new comments

• Enum types are incorrectly inferred

  #19334 commented on Jul 2, 2025 • 0 new comments

• Generic type alias with `Annotated` of a union: Type application is only supported for generic classes

  #19343 commented on Jun 30, 2025 • 0 new comments

• dmypy not reporting an issue that mypy finds

  #15677 commented on Jun 30, 2025 • 0 new comments

• valid-type not reported for variables imported in other modules

  #19310 commented on Jun 30, 2025 • 0 new comments

• [1.16 regression] failure to exhaustively narrow type var bounded by union with value pattern match

  #19159 commented on Jun 29, 2025 • 0 new comments

• Incorrect error when argument missing from function call unpacking TypedDict

  #12755 commented on Jun 29, 2025 • 0 new comments

• Type narrowing for a tuple is worse with match than with the equivalent isinstance check

  #19082 commented on Jun 28, 2025 • 0 new comments

• `functools.wraps` `Any` in wrapped function

  #18204 commented on Jun 28, 2025 • 0 new comments