Issues

• Re-think our high level logic for type inference

  metatopic-inferencetopic-type-context
  python/mypy#22063 · Filter by author ilevkivskyi opened on Sep 28, 2026
  11

• error: "key" to "max" has incompatible type

  bugtopic-type-context
  python/mypy#21104 · Filter by author gsbrodal opened on Mar 28, 2026
  2

• Type check ignored on a dictionary

  bugtopic-type-context
  python/mypy#20791 · Filter by author danmur97 opened on Feb 12, 2026
  2

• mypy doesn't get error with dict(**{10: 20}) while PVM gets error

  bugtopic-runtime-semanticstopic-type-context
  python/mypy#20706 · Filter by author hyperkai opened on Jan 31, 2026
  1

• The different type (str) of unpacked inner dictionary items from the type (int) of outer dictionary items gets error

  bugtopic-type-context
  python/mypy#20705 · Filter by author hyperkai opened on Jan 31, 2026

• mypy doesn't get error with typed dict(*{'A': 10}) while PVM gets error

  bugtopic-type-context
  python/mypy#20702 · Filter by author hyperkai opened on Jan 30, 2026
  2

• improper inference of lambdas and dataclass constructors used as generic decorator arguments

  bugtopic-type-context
  python/mypy#20593 · Filter by author RomanValov opened on Jan 16, 2026
  1

• Problems with get on a TypedDict

  bugtopic-type-contexttopic-typed-dict
  python/mypy#20138 · Filter by author JakobDev opened on Oct 28, 2025
  2

• MyPy treats initialization of a variable as an assignment for variance checks for complex dictionary.

  bugtopic-type-context
  python/mypy#20102 · Filter by author markshannon opened on Oct 22, 2025
  3

• Sequences of attrs validators

  bugtopic-attrstopic-inferencetopic-join-v-uniontopic-type-context
  python/mypy#20013 · Filter by author AdrianSosic opened on Oct 7, 2025
  3

• Inconsistent processing Literal as TypeVar

  bugtopic-caststopic-type-context
  python/mypy#19761 · Filter by author sloboegen opened on Aug 29, 2025
  4

• Uncaught Error in Assignment of type Iterator[int] to type Iterator[str]

  bugtopic-type-context
  python/mypy#19675 · Filter by author didi64 opened on Aug 17, 2025
  3

• Keep Literal after indexing?

  featuretopic-literal-typestopic-type-context
  python/mypy#19152 · Filter by author ego-thales opened on May 26, 2025
  6

• Sequence of types

  assert-typebugtopic-join-v-uniontopic-type-context
  python/mypy#19142 · Filter by author DouweM opened on May 23, 2025
  2

• Spurious type error using result of re.match in lambda inside map

  bugtopic-type-context
  python/mypy#18947 · Filter by author alexcoplan opened on Apr 21, 2025
  3

• Loop Variable over Literal List Not Recognised as Having Literal Type

  bugtopic-type-context
  python/mypy#18826 · Filter by author macdjord opened on Mar 21, 2025
  6

• return await ... not working properly

  bugtopic-type-context
  python/mypy#18805 · Filter by author xAkre opened on Mar 15, 2025
  1

• Confusing error from bidirectional inference?

  bugtopic-type-context
  python/mypy#18297 · Filter by author alicederyn opened on Dec 16, 2024
  1

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

  bugtopic-type-context
  python/mypy#18191 · Filter by author Viicos opened on Nov 26, 2024
  4

• Different error code when assigning the result of a function to an annotated field

  bugtopic-type-context
  python/mypy#17986 · Filter by author Viicos opened on Oct 17, 2024

• Inconsistent "Incompatible return type" error when List[int] is returned for List[Union[str, int]] when layered up with Tuple/Union

  bugtopic-type-context
  python/mypy#17868 · Filter by author huntfx opened on Oct 2, 2024

• return value of sorted() cannot be upcast

  bugtopic-type-context
  python/mypy#17296 · Filter by author Dunes opened on May 26, 2024
  3

• variance okay for literals, but not expressions ([1, 2] okay for list[int | None] but [1] + [2] is error)

  bugtopic-type-context
  python/mypy#16623 · Filter by author kurtbrose opened on Dec 5, 2023
  1

• Mypy error with tuple types Including TypedDict in return

  bugtopic-type-contexttopic-typed-dict
  python/mypy#16585 · Filter by author tomoris opened on Nov 29, 2023

• Union type narrowing behaves differently depending on argument position

  bugtopic-join-v-uniontopic-type-context
  python/mypy#16401 · Filter by author bluenote10 opened on Nov 3, 2023