8 Pull requests merged by 6 people

• stubgen: add import for types in __exit__ method signature

  #19120 merged May 21, 2025

• syntax error messages capitalization

  #19114 merged May 20, 2025

• stubgenc: add support for including class and property docstrings

  #17964 merged May 20, 2025

• Emit a friendlier warning on invalid exclude regex, instead of a stacktrace

  #19102 merged May 19, 2025

• Support several more constructs in stubgen's AliasPrinter

  #18888 merged May 19, 2025

• stubgen: Don't generate Incomplete | None = None argument annotation

  #19097 merged May 16, 2025

• Update dmypy/client.py: Enable ANSI color codes for windows cmd

  #19088 merged May 15, 2025

• Extend special case for context-based typevar inference to typevar unions in return position

  #18976 merged May 15, 2025

15 Pull requests opened by 12 people

• Add support for Pydantic models in `stubgen`

  #19095 opened May 16, 2025

• feat: mypyc weakref_ops.py

  #19099 opened May 16, 2025

• Include tuple fallback in constraints built from tuple types

  #19100 opened May 17, 2025

• Split import-untyped into import-untyped and import-untyped-stubs-available

  #19101 opened May 17, 2025

• Mention in the Any documentation how object is preferable

  #19103 opened May 17, 2025

• Fix/attrs init overload

  #19104 opened May 18, 2025

• Use normalized tuples for fallback calculation

  #19111 opened May 19, 2025

• Display FQN for imported base classes in errors about incompatible ov…

  #19115 opened May 19, 2025

• Bump setuptools from 75.8.0 to 78.1.1

  #19116 opened May 19, 2025

• Avoid false `unreachable` and `redundant-expr` warnings in loops more robustly and efficiently, and avoid multiple `revealed type` notes for the same line.

  #19118 opened May 20, 2025

• enable --pretty by default

  #19122 opened May 21, 2025

• Fix example to use correct method of Stack

  #19123 opened May 21, 2025

• [WIP] Enhance check_for_missing_annotations for None return type, giving unannotated arg name in err msg

  #19125 opened May 21, 2025

• [mypyc] Refactor extension module C generation and generated C

  #19126 opened May 21, 2025

• [mypyc] Fix incref/decref on free-threaded builds

  #19127 opened May 21, 2025

22 Issues closed by 7 people

• Stubgen generates reference to `types.TracebackType` without importing `types`

  #17037 closed May 21, 2025

• Ensure syntax error messages are capitalized

  #19107 closed May 20, 2025

• @cache breaks type checking when used with @classmethod and typing.Self

  #19117 closed May 20, 2025

• False narrowing with repeated assignment inside if resulting in bad false negative

  #18492 closed May 19, 2025

• Stubgen crashes on dataclass field

  #18886 closed May 19, 2025

• Return type of unbound methods of generic types incorrectly inferred.

  #13835 closed May 19, 2025

• Editable install fails with ImportError (unknown location) on Windows 10 outside of venv

  #19089 closed May 17, 2025

• stubgen: Don't generate `Incomplete | None = None`

  #19096 closed May 16, 2025

• AssertionError: Internal error: unresolved placeholder type

  #19078 closed May 16, 2025

• Arguments annotated with typevars cannot have defaults

  #19092 closed May 16, 2025

• False positive for lambda within a function

  #10426 closed May 15, 2025

• Typechecking differs between one-line def of "return expr" vs. "r = expr; return r"

  #11985 closed May 15, 2025

• Unneeded type widening of inner function call when using explicit return type

  #12092 closed May 15, 2025

• False "Invalid index type" for min derived from return type

  #14664 closed May 15, 2025

• Inference failure in `return` statement with `next` and `or`

  #15755 closed May 15, 2025

• itertools' `all_equal` recipe causes false arg-type failures

  #15150 closed May 15, 2025

• Type inference for `max()` "tainted" by `default`

  #16267 closed May 15, 2025

• (🐞) generics not resolving correctly when multiple `TypeVar`s don't meet the expected type

  #17553 closed May 15, 2025

• min()/max() with default value cause issues with key function type

  #17536 closed May 15, 2025

• Function returning union of type variables has inference/unification behaviour change when assigned to explicitly-typed location

  #16659 closed May 15, 2025

• [arg-type] wrong argument type in generic function with union

  #17654 closed May 15, 2025

• wrongly reported typing error in `min` with `key` lambda function and default value when result is Optional

  #17221 closed May 15, 2025

16 Issues opened by 11 people

• Mypy fails on external libraries

  #19131 opened May 22, 2025

• False negative: popping a ReadOnly key from a TypedDict

  #19130 opened May 22, 2025

• MYPYPATH directory used even if no __init__.py

  #19129 opened May 22, 2025

• "An implementation for an overloaded function is not allowed in a stub file" for overloaded type hint

  #19128 opened May 21, 2025

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

  #19124 opened May 21, 2025

• Nondeterministic type checking on pytorch/vision

  #19121 opened May 20, 2025

• Show more context about the base class on incompatible override

  #19112 opened May 19, 2025

• Empty variadic `tuple` subtype not assignable to `tuple[int, ...]`

  #19110 opened May 18, 2025

• `tuple[Any, *tuple[Any, ...]]` is not assignable to other tuple types

  #19109 opened May 18, 2025

• Enable --pretty by default

  #19108 opened May 18, 2025

• incorrect inference of user-defined variadic tuple subtype instances

  #19106 opened May 18, 2025

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

  #19105 opened May 18, 2025

• Odd error message for invalid use of tuple(): expected "Iterable[Never]"

  #19098 opened May 16, 2025

• Fails to flag `None` passed to constructor of `enum.Enum`-based classes

  #19094 opened May 16, 2025

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

  #19093 opened May 16, 2025

• Cannot combine iterables of Callable classes

  #19091 opened May 15, 2025

29 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.

• Narrow literals in the negative case even with custom equality

  #18574 commented on May 22, 2025 • 2 new comments

• feat(mypyc): proper weakref support

  #19056 commented on May 16, 2025 • 1 new comment

• Remove last unreachable block from mypyc code

  #19086 commented on May 17, 2025 • 0 new comments

• feat(test): Failure test case for mypyc dictionary subclass views

  #19076 commented on May 17, 2025 • 0 new comments

• Add warn-unreachable to strict mode

  #19047 commented on May 17, 2025 • 0 new comments

• Use checkmember.py to check protocol subtyping

  #18943 commented on May 19, 2025 • 0 new comments

• Sync typeshed

  #18930 commented on May 19, 2025 • 0 new comments

• Add support for literal addition

  #18004 commented on May 19, 2025 • 0 new comments

• Optional error code to flag missing return type when an argument has an annotation

  #15127 commented on May 20, 2025 • 0 new comments

• Type narrowing for tuple worse with match than with the equivalent instanceof check

  #19082 commented on May 20, 2025 • 0 new comments

• `issubclass()` assertions not narrowing types

  #10680 commented on May 20, 2025 • 0 new comments

• Wrong type inference with "yield from" from an Iterator class

  #17449 commented on May 19, 2025 • 0 new comments

• Use case for typing.Type with abstract types

  #4717 commented on May 19, 2025 • 0 new comments

• Failed to find exact letter case of module name when relative import on Windows OS

  #18445 commented on May 19, 2025 • 0 new comments

• errors in other files are reported when running mypy on a file with lowercase drive letter

  #18590 commented on May 19, 2025 • 0 new comments

• Overloaded `__init__` prevents type from being recognized as an attrs class

  #19003 commented on May 18, 2025 • 0 new comments

• Support file-level assertions as inline configuration

  #19013 commented on May 17, 2025 • 0 new comments

• `--exclude` regular expression leading "/" does not match in current directory

  #19012 commented on May 17, 2025 • 0 new comments

• Consider merging command line flags and configuration file options descriptions

  #12347 commented on May 17, 2025 • 0 new comments

• Limited inference with union of callables and assignment to a union

  #18191 commented on May 17, 2025 • 0 new comments

• Inconsistent behavior: MyPy rejects isinstance with Any, but accepts cast from Any for ignored imports

  #17844 commented on May 16, 2025 • 0 new comments

• Base {} Dict Should Infer from Function Return Type

  #18700 commented on May 16, 2025 • 0 new comments

• `mypy` should use `List` when complaining about issues with the `List` type, instead of `list`

  #18530 commented on May 16, 2025 • 0 new comments

• Add "<function> defined here" notes to more errors

  #4773 commented on May 16, 2025 • 0 new comments

• Class scope name resolution issue

  #9991 commented on May 16, 2025 • 0 new comments

• Type checking fails to distribute across Tuple types

  #18922 commented on May 15, 2025 • 0 new comments

• Replace uses of type variable "value restriction" with "constraints"

  #17828 commented on May 15, 2025 • 0 new comments

• [docs]: The "Edit Page" button is not visible in the documentation for the stable branch.

  #17947 commented on May 15, 2025 • 0 new comments

• 1.10.1: pytest fails in

  #17428 commented on May 15, 2025 • 0 new comments