18 Pull requests merged by 10 people

• Fix for overloaded type object erasure

  #19338 merged Jun 25, 2025

• Fix C compiler flags in the profile self check script

  #19326 merged Jun 22, 2025

• Add script for profiling self check (Linux only)

  #19322 merged Jun 22, 2025

• Avoid erasing type objects when checking runtime cover

  #19320 merged Jun 22, 2025

• Fix TypeGuard/TypeIs being forgotten when semanal defers

  #19325 merged Jun 22, 2025

• 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

7 Pull requests opened by 7 people

• [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

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

  #19324 opened Jun 21, 2025

• Check slots assignments on self types

  #19332 opened Jun 24, 2025

• Add basic support for template strings (PEP 750)

  #19333 opened Jun 24, 2025

• Lessen dmypy suggest path limitations for Windows machines

  #19337 opened Jun 25, 2025

• Adds positional and kwarg only symbols into generated stubs

  #19340 opened Jun 25, 2025

21 Issues closed by 4 people

• method descriptors aren't properly checked when assinging to a Protocol

  #19336 closed Jun 24, 2025

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

  #19318 closed Jun 22, 2025

• 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

• 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

9 Issues opened by 9 people

• `T1 | T2` narrows to `T1` and `T1 | T2`

  #19342 opened Jun 25, 2025

• `self` annotation not checked in `__index__`?

  #19341 opened Jun 25, 2025

• Mypy daemon suggest does not accept windows paths

  #19335 opened Jun 24, 2025

• Enum types are incorrectly inferred

  #19334 opened Jun 24, 2025

• Slots not checked if `Self` annotation is present

  #19331 opened Jun 24, 2025

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

  #19329 opened Jun 23, 2025

• `--strict-equality` too strict in iteratively visited code

  #19328 opened Jun 23, 2025

• Regression: Unclear error message when using `Any`

  #19327 opened Jun 23, 2025

• False positive when accessing a TypedDict in a list comprehension

  #19317 opened Jun 20, 2025

24 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.

• Check property decorators stricter

  #19313 commented on Jun 22, 2025 • 7 new comments

• Allow adjacent conditionally-defined overloads

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

• Mark code after for loops that never end as unreachable

  #19287 commented on Jun 26, 2025 • 1 new comment

• [mypyc] Generate introspection signatures for compiled functions

  #19307 commented on Jun 25, 2025 • 0 new comments

• Uninhabited should have all attributes

  #19300 commented on Jun 26, 2025 • 0 new comments

• feat: new mypyc primitives for str.count

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

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

  #19168 commented on Jun 26, 2025 • 0 new comments

• feat: new mypyc primitive for weakref.ref

  #19099 commented on Jun 22, 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

• Metaclass conflict check improvements

  #17682 commented on Jun 23, 2025 • 0 new comments

• provide more verbosity for mismatched type types

  #13878 commented on Jun 26, 2025 • 0 new comments

• TypeForm[T]: Spelling for regular types (int, str) & special forms (Union[int, str], Literal['foo'], etc)

  #9773 commented on Jun 26, 2025 • 0 new comments

• Issues related to numpy

  #18343 commented on Jun 25, 2025 • 0 new comments

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

  #18473 commented on Jun 25, 2025 • 0 new comments

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

  #18204 commented on Jun 25, 2025 • 0 new comments

• stubtest: Support `type_check_only` decorator

  #15146 commented on Jun 25, 2025 • 0 new comments

• stubgen: mangles from _typeshed import Incomplete on Windows

  #16658 commented on Jun 24, 2025 • 0 new comments

• Offer a simpler way to resolve metaclass conflicts

  #14033 commented on Jun 23, 2025 • 0 new comments

• Mypy should allow for Self in parametrized parent class definition — issues with contextlib.AbstractContextManager

  #17758 commented on Jun 23, 2025 • 0 new comments

• 1.17 Release Planning

  #19306 commented on Jun 21, 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