16 Pull requests merged by 6 people

• 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

• Handle corner case: protocol vs classvar vs descriptor

  #19277 merged Jun 13, 2025

• Fix tests in master

  #19293 merged Jun 13, 2025

• Use union of current context and left side for right side narrowing of binary ops

  #19249 merged Jun 13, 2025

• Preserve literals when joining Literal and Instance with matching last_known_value

  #19279 merged Jun 13, 2025

• Bind self-types in checkmember for decorated classmethods

  #19025 merged Jun 13, 2025

8 Pull requests opened by 5 people

• Mark code after for loops that never end as unreachable

  #19287 opened Jun 13, 2025

• Use types.CoroutineType instead of typing.Coroutine

  #19288 opened Jun 13, 2025

• Follow-up after #19025: test and cleanup

  #19294 opened Jun 13, 2025

• Re-widen custom properties after narrowing

  #19296 opened Jun 14, 2025

• Uninhabited should have all attributes

  #19300 opened Jun 14, 2025

• [mypyc] Generate introspection signatures for compiled functions

  #19307 opened Jun 16, 2025

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

  #19309 opened Jun 17, 2025

• Check property decorators stricter

  #19313 opened Jun 18, 2025

23 Issues closed by 5 people

• 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

• Refactor all member access to go through checkmember.py (meta issue)

  #7724 closed Jun 14, 2025

• Mypy incorrectly gives an error for a ternary return statement

  #15368 closed Jun 13, 2025

• False error in conditional expression returning union

  #6898 closed Jun 13, 2025

• Strange case with deepcopy() and Literal[True]

  #12001 closed Jun 13, 2025

• lru_cache classmethod: variable has type "Self" after assignment

  #18993 closed Jun 13, 2025

• Return type is `Self` when calling an inherited decorated classmethod that returns `Self`

  #19023 closed Jun 13, 2025

• Wrong `comparison-overlap` with `Enum`/`Literal` when using globals

  #19283 closed Jun 13, 2025

12 Issues opened by 12 people

• 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

• Followup tasks for checkmember.py refactoring

  #19299 opened Jun 14, 2025

• Add full support for functools.lru_cache

  #19291 opened Jun 13, 2025

• crash for a very specific invocation of mypy: `assert isinstance(visitor, SyntheticTypeVisitor)`

  #19286 opened Jun 12, 2025

• Bounded generic type parameter not narrowed past its upper bound, regardless of argument value

  #19285 opened Jun 12, 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.

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

  #19270 commented on Jun 19, 2025 • 3 new comments

• Improve the support for promotions inside unions.

  #19245 commented on Jun 16, 2025 • 2 new comments

• feat: new mypyc primitives for str.count

  #19264 commented on Jun 19, 2025 • 1 new comment

• Mention in the Any documentation how object is preferable

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

• Omit constraints referencing `dict` if a conflicting `TypedDict` constraint exists

  #19225 commented on Jun 12, 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 17, 2025 • 0 new comments

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

  #19046 commented on Jun 13, 2025 • 0 new comments

• Allow adjacent conditionally-defined overloads

  #19042 commented on Jun 19, 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

• Fix `TypeIs` negative narrowing of union of generics

  #18193 commented on Jun 18, 2025 • 0 new comments

• Fix metaclass resolution algorithm

  #17713 commented on Jun 18, 2025 • 0 new comments

• Fix binding difference between callables and callback protocols

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

• Allow to enable/disable plugin error codes

  #13419 commented on Jun 13, 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

• 1.16 Release Planning

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

• `KeyError: 'deprecated'` because of bad cache

  #18473 commented on Jun 14, 2025 • 0 new comments

• Assigning wrapped class members to a member defined by a base class fails with incompatible types in assignment

  #14408 commented on Jun 14, 2025 • 0 new comments

• 1.16 changed behavior of redefined variable to None

  #19280 commented on Jun 13, 2025 • 0 new comments

• IntEnum literals are not considerable comparable with ints

  #16327 commented on Jun 13, 2025 • 0 new comments

• 1.16 regression: `--warn-unused-ignore` now complains in ignored-but-correct places

  #19237 commented on Jun 12, 2025 • 0 new comments

• Unreachability should work for constrained type vars

  #19256 commented on Jun 12, 2025 • 0 new comments