Issues

Issues

• [mypyc] Subclass overriding an inherited attribute default leaks the base default on every instantiation

  python/mypy#22446 · opened on Nov 12, 2026

• Feature request: Resolve module-level Final to the literal value of its initializer

  python/mypy#22427 · opened on Nov 10, 2026

• Crash with generic-of-generic when called with --prety

  python/mypy#22424 · opened on Nov 9, 2026
  1

• Type variable reported unbound when only a ParamSpec alias's return type uses it and its ParamSpec slot is not a ParamSpec

  python/mypy#22399 · opened on Nov 8, 2026

• Inherited self-annotated __init__ overload does not solve a generic subclass's type parameters

  python/mypy#22395 · opened on Nov 7, 2026

• comparison of two operands of the same type calls the reflected method first when __lt__ and __gt__ are defined in different classes

  python/mypy#22386 · opened on Nov 6, 2026
  1

• overloaded __post_init__ in a dataclass: [override] error for an overload item that does not take the InitVar type

  python/mypy#22385 · opened on Nov 6, 2026

• binary operator on class objects ignores the right operand's reflected method when its metaclass subclasses the left operand's metaclass

  python/mypy#22377 · opened on Nov 5, 2026
  1

• subscripting a class with a TypeVarTuple followed by a defaulted ParamSpec reports "Can only replace ParamSpec" and infers Any

  python/mypy#22375 · opened on Nov 5, 2026

• Read --doc-dir once when stubgen processes multiple C modules

  python/mypy#22370 · opened on Nov 4, 2026
  2

• Segfault / RecursionError when calling an instance whose class declares __call__ as an attribute of its own type

  python/mypy#22361 · opened on Nov 3, 2026

• contravariant generic with a self-referential base

  python/mypy#22360 · opened on Nov 3, 2026

• [mypyc] AssertionError in get_sequence_type_from_type on for x in reversed(<list>) when the item type contains Any

  python/mypy#22354 · opened on Nov 3, 2026
  2

• Segfault on class parameterised by a TypeVar whose default is itself (TypeVar("T", default="T"))

  python/mypy#22344 · opened on Nov 1, 2026
  1

• Segfault on type alias that refers to itself through another generic alias (type X = Meta[X])

  python/mypy#22343 · opened on Nov 1, 2026
  1

• False positive list-item: list literal checked against list[bool] when the union also contains Hashable

  python/mypy#22342 · opened on Nov 1, 2026
  1

• PEP 695 variance inference treats a writable Callable[[T], None] attribute as contravariant.

  python/mypy#22339 · opened on Oct 31, 2026
  1

• MyPy does not support subclassing function a argument member with type type though pyright does (e.g. pyright 1.1.414)

  python/mypy#22337 · opened on Oct 31, 2026
  1

• Sentinel and enum type merge issues with generic

  python/mypy#22334 · opened on Oct 30, 2026
  3

• Bounded TypeVar inferred as object for nested covariant generic arguments

  python/mypy#22331 · opened on Oct 30, 2026
  1

• Imported placeholder names are lost before dynamic class hooks run

  python/mypy#22326 · opened on Oct 30, 2026

• Wrong comparison in type error for comparisons

  python/mypy#22316 · opened on Oct 28, 2026
  1

• mypy rejects subclassing Any typed **kwargs entries within a function

  python/mypy#22309 · opened on Oct 27, 2026

• @disjoint_base + __new__(cls) -> Never leads to confusing error message

  python/mypy#22306 · opened on Oct 26, 2026

• Inconsistent erroring for wider argument type in operator override when using overloads (false negative)

  python/mypy#22304 · opened on Oct 26, 2026
  1