Issues

• Overloaded override stops being checked at an added overload

  bug
  microsoft/pyright#11836 · Filter by author dlech opened on Oct 5, 2026

• Property in a PEP 695 generic class is reported as redeclared when its type is an alias that refers back to the class

  bug
  microsoft/pyright#11835 · Filter by author dlech opened on Oct 5, 2026

• False "Data protocols are not allowed in issubclass calls" error for protocols that declare __slots__, such as SupportsInt and collections.abc.Buffer

  bug
  microsoft/pyright#11834 · Filter by author dlech opened on Oct 5, 2026

• Lambda assigned through a property setter typed as a Callable loses its first parameter

  bug
  microsoft/pyright#11833 · Filter by author dlech opened on Oct 5, 2026

• Infer Literal types for uppercase constants assigned literal values

  enhancement request
  microsoft/pyright#11832 · Filter by author VSCGit-Windows opened on Oct 3, 2026

• Support __bool__ = None declaration for invalid conditional operands

  enhancement request
  microsoft/pyright#11825 · Filter by author TomiBelan opened on Oct 2, 2026
  1

• Identity aliases not handled properly

  bug
  microsoft/pyright#11813 · Filter by author Moussa-Mikhail opened on Oct 1, 2026

• False positive when union type is asserted to one type

  bug
  microsoft/pyright#11812 · Filter by author giommaso opened on Oct 1, 2026
  2

• __getattribute__ return type is not reflected in the type of attributes

  bug
  microsoft/pyright#11811 · Filter by author multimeric opened on Oct 1, 2026
  4

• Circular TypeAliasTypes are not understood in TypedDict & NamedTuple

  bug
  microsoft/pyright#11810 · Filter by author dangotbanned opened on Sep 30, 2026

• pyright --verifytypes doesn't see docstring if docstring is placed within base clas

  bug
  microsoft/pyright#11803 · Filter by author CheViana opened on Sep 27, 2026
  

• Types silently degrade to Unknown when elif branch count is too high

  bug
  microsoft/pyright#11794 · Filter by author jernst opened on Sep 22, 2026
  2

• Narrowing IO[str] | None with sys.stdout is still considered possibly None

  as designed
  microsoft/pyright#11768 · Filter by author nedbat opened on Sep 15, 2026
  5

• Exiting with a non-zero exit code causes nano to think the linter failed to run

  enhancement request
  microsoft/pyright#11762 · Filter by author Firepup6500 opened on Sep 15, 2026

• Performance problems when using very large TypedDicts

  addressed in next versionbug
  microsoft/pyright#11759 · Filter by author Wizzerinus opened on Sep 14, 2026
  3

• reportCallIssue with Python 3.15 frozendict when called with arguments

  bugfixed in next version (main)
  microsoft/pyright#11742 · Filter by author matthewyu0311 opened on Sep 12, 2026
  1

• TypeForm rejects a union when types are nested and metaclass defines __get__

  bug
  microsoft/pyright#11741 · Filter by author nickshirobokov opened on Sep 11, 2026
  1

• TypeVar with Never as an option and unexpected reportArgumentType

  bug
  microsoft/pyright#11736 · Filter by author finite-state-machine opened on Sep 11, 2026
  1

• Regression: specialised self overloads erase container types and suppress attribute errors

  microsoft/pyright#11731 · Filter by author cmp0xff opened on Sep 10, 2026
  1

• Report serverInfo (name and version) in the initialize result

  microsoft/pyright#11723 · Filter by author tagawa0525 opened on Sep 9, 2026

• print missing from completions in function scope with isIncomplete: true

  bug
  microsoft/pyright#11659 · Filter by author Magiclovekorean opened on Aug 19, 2026

• Order-dependent overload resolution failure due to memorised Protocol conformance check on generic class

  addressed in next versionbug
  microsoft/pyright#11644 · Filter by author cmp0xff opened on Aug 15, 2026
  4

• Inference of identity lambda into union of keyword-only function and its identity

  bug
  microsoft/pyright#11603 · Filter by author steovd opened on Aug 8, 2026

• Helping hand from order of messages: causes and consequences

  enhancement request
  microsoft/pyright#11581 · Filter by author Hibou57 opened on Aug 2, 2026

• Match-case on type() is not well interpreted

  bug
  microsoft/pyright#11576 · Filter by author Hibou57 opened on Jul 30, 2026
  5