23 Pull requests merged by 11 people

• Fix incorrect signature suggestion from dmypy suggest when type name matches imported module name

  #18937 merged Jun 21, 2025

• Speed up type checking by caching argument inference context

  #19323 merged Jun 21, 2025

• Fix TypeIs negative narrowing of union of generics

  #18193 merged Jun 21, 2025

• Tweaks to perf_compare.py script to reduce RAM usage

  #19321 merged Jun 21, 2025

• [Documentation] Minor change: Unify indexes in Variance of generic types description

  #17871 merged Jun 21, 2025

• Type ignore comments erroneously marked as unused by dmypy

  #15043 merged Jun 21, 2025

• Ignore overload impl when checking __OP__ and __rOP__ compatibility

  #18502 merged Jun 20, 2025

• Support running stubtest in non-UTF8 terminals

  #19085 merged Jun 20, 2025

• Fix metaclass resolution algorithm

  #17713 merged Jun 20, 2025

• Improve the handling of "iteration dependent" errors and notes in finally clauses.

  #19270 merged Jun 20, 2025

• [mypyc] feat(docs): detail issue with inspect.iscoroutinefunction

  #19309 merged Jun 20, 2025

• Re-widen custom properties after narrowing

  #19296 merged Jun 19, 2025

• Cleanup generic class variable access

  #19292 merged Jun 19, 2025

• Fix constructor type for subclasses of Any

  #19295 merged Jun 18, 2025

• Generalize class/static method and property alias support

  #19297 merged Jun 18, 2025

• Fix dmypy suggest interaction with __new__

  #18966 merged Jun 18, 2025

• Show name of type variable in "Cannot infer type argument" message

  #19290 merged Jun 18, 2025

• Fix missing error when redeclaring type variable in nested generic class

  #18883 merged Jun 18, 2025

• Sync typeshed

  #19301 merged Jun 18, 2025

• support Callable / callable Protocols in suggest decorator unwarpping

  #19072 merged Jun 18, 2025

• Include tuple fallback in constraints built from tuple types

  #19100 merged Jun 18, 2025

• Skip existing when retrying upload-pypi.py

  #19305 merged Jun 17, 2025

• Support properties with generic setters

  #19298 merged Jun 16, 2025

8 Pull requests opened by 6 people

• [mypyc] Generate introspection signatures for compiled functions

  #19307 opened Jun 16, 2025

• Check property decorators stricter

  #19313 opened Jun 18, 2025

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

  #19316 opened Jun 20, 2025

• use is_same_type when resolving decorators in suggestions

  #19319 opened Jun 20, 2025

• Avoid erasing type objects when checking runtime cover

  #19320 opened Jun 20, 2025

• Add script for profiling self check (Linux only)

  #19322 opened Jun 21, 2025

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

  #19324 opened Jun 21, 2025

• Fix `TypeGuard`/`TypeIs` being forgotten when semanal defers

  #19325 opened Jun 21, 2025

32 Issues closed by 5 people

• dmypy suggest gives wrong type (datetime vs datetime module)

  #18935 closed Jun 21, 2025

• False positive [unreachable] with `TypeIs`

  #17181 closed Jun 21, 2025

• Generic type incorrectly un-narrowed following TypeIs

  #19282 closed Jun 21, 2025

• Type narrowed to `Never` when using `TypeIs` with union of callables

  #18009 closed Jun 21, 2025

• Self types in generic classes

  #2354 closed Jun 21, 2025

• Different overlap checking between `__mul__` and `__rmul__`

  #18498 closed Jun 20, 2025

• stubtest crash with special unicode characters

  #19071 closed Jun 20, 2025

• 1.16 changed behavior of redefined variable to None

  #19280 closed Jun 20, 2025

• Cannot determine consistent method resolution order (MRO) when inheriting from both `MutableSequence` and `list`

  #11427 closed Jun 20, 2025

• Metaclass conflict error when base class uses an imported metaclass with no annotation

  #14182 closed Jun 20, 2025

• Metaclass conflict when combine class with a custom metaclass and str class

  #14818 closed Jun 20, 2025

• False positive error when subclassing `List` type

  #15040 closed Jun 20, 2025

• Wrong Metaclass Conflict Error

  #17213 closed Jun 20, 2025

• Offer a simpler way to resolve metaclass conflicts

  #14033 closed Jun 20, 2025

• Wrong `unreachable` note in `finally` section

  #19269 closed Jun 20, 2025

• Type narrowing behavior for data descriptor assignment is incorrect in some cases

  #10399 closed Jun 19, 2025

• Recent performance regressions

  #18991 closed Jun 19, 2025

• Preliminary test on type not detected, leading to false error

  #19124 closed Jun 19, 2025

• Generic ClassVar Type failing

  #5144 closed Jun 19, 2025

• `@classmethod` forces `Self` to coerce to a specific type

  #15223 closed Jun 19, 2025

• Inheriting from untyped class and overriding `__init__` breaks abstract class detection

  #17781 closed Jun 18, 2025

• Subclassing Class having type Any

  #10848 closed Jun 18, 2025

• Presence of __init__ in parent class triggering false positive error: Access to generic class variables is ambiguous

  #9815 closed Jun 18, 2025

• Property, classmethod and staticmethod aliases not supported

  #6700 closed Jun 18, 2025

• dmypy suggest crashes on `__new__` with IndexError

  #18964 closed Jun 18, 2025

• Source file found twice under different module names mypy

  #19284 closed Jun 18, 2025

• Mypy reports error for different argument, than the one which is actually wrong

  #19289 closed Jun 18, 2025

• Error isn't provided when TypeVar is defined in both outer and inner class scopes

  #10479 closed Jun 18, 2025

• dmypy gives up on trivial decorator

  #18940 closed Jun 18, 2025

• Argument 1 to `type_check_only` has incompatible type `type[S[T, *Ts]]`; expected `type[S[T, *Ts]]`

  #19093 closed Jun 18, 2025

• False negative using --strict-equality and None

  #14541 closed Jun 17, 2025

• Incorrect/inconsistent handling of PIL.Image.Image when using PEP 695 Type Parameters

  #19303 closed Jun 16, 2025

10 Issues opened by 10 people

• TypeIs stops working if there is an error in the TypeIs implementation

  #19318 opened Jun 20, 2025

• False positive when accessing a TypedDict in a list comprehension

  #19317 opened Jun 20, 2025

• stubgen generates bad signatures when mixing historical positional-only names and keyword-only parameters

  #19315 opened Jun 18, 2025

• Overlapping modules overloads in `pyproject.toml` result in undefined behavior

  #19314 opened Jun 18, 2025

• False negative on `setter` field of undefined variable

  #19312 opened Jun 18, 2025

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

  #19310 opened Jun 17, 2025

• Type narrowing fails on type(None) or NoneType

  #19308 opened Jun 17, 2025

• 1.17 Release Planning

  #19306 opened Jun 16, 2025

• Assigning to intermediate variable changes type checking results

  #19304 opened Jun 16, 2025

• Type checking for *args and **kwargs when passing them to another function

  #19302 opened Jun 15, 2025

21 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.

• Allow adjacent conditionally-defined overloads

  #19042 commented on Jun 21, 2025 • 5 new comments

• Mention in the Any documentation how object is preferable

  #19103 commented on Jun 18, 2025 • 1 new comment

• Uninhabited should have all attributes

  #19300 commented on Jun 16, 2025 • 0 new comments

• Follow-up after #19025: test and cleanup

  #19294 commented on Jun 18, 2025 • 0 new comments

• feat: new mypyc primitives for str.count

  #19264 commented on Jun 19, 2025 • 0 new comments

• Improve the support for promotions inside unions.

  #19245 commented on Jun 16, 2025 • 0 new comments

• Fix/attrs init overload

  #19104 commented on Jun 19, 2025 • 0 new comments

• feat: new mypyc primitive for weakref.ref

  #19099 commented on Jun 21, 2025 • 0 new comments

• [mypyc] Add primitive for bytes decode() method

  #18951 commented on Jun 18, 2025 • 0 new comments

• PEP 702 (@deprecated): improve the handling of overloaded functions and methods

  #18682 commented on Jun 17, 2025 • 0 new comments

• Add idlemypyextension to IDE integrations section

  #18615 commented on Jun 21, 2025 • 0 new comments

• Introduce temporary named expressions for `match` subjects

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

• Arguments without a default cannot follow attributes with one

  #17785 commented on Jun 20, 2025 • 0 new comments

• Fix binding difference between callables and callback protocols

  #15993 commented on Jun 15, 2025 • 0 new comments

• Missing `TypeIs` narrowing for variadic tuples

  #17599 commented on Jun 21, 2025 • 0 new comments

• unpacking dict in function call with optional arguments fails

  #10008 commented on Jun 19, 2025 • 0 new comments

• Generic argument is not being identified

  #18933 commented on Jun 18, 2025 • 0 new comments

• Making a type alias of a Callable that describes a decorator discards all type information

  #18842 commented on Jun 17, 2025 • 0 new comments

• plugin point for `ClassDef`

  #18729 commented on Jun 17, 2025 • 0 new comments

• Followup tasks for checkmember.py refactoring

  #19299 commented on Jun 17, 2025 • 0 new comments

• 1.16 Release Planning

  #18739 commented on Jun 16, 2025 • 0 new comments