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Commits on Oct 9, 2024

• Published 1.1.384

  erictraut

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  04f9c37

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• Fixed a bug that results in incorrect protocol matching behaviors under certain circumstances. (microsoft#9182)

  erictraut

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  631c527

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• Added support for *args: Unpack[T] when T is a type variable with an upper bound of a tuple. (microsoft#9179)

  erictraut

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Commits on Oct 8, 2024

• Fixed a bug that results in incorrect type evaluation when the type of a dataclass field is declared with a type variable but its default value is concrete. This addresses microsoft#9158. (microsof…

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  erictraut

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  874daba

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• Fixed a bug that results in the inability to rename a NamedTuple field. This addresses https://github.com/microsoft/pylance-release/issues/6538.

  erictraut

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  d52089f

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• Updated typeshed stubs to the latest version.

  erictraut

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  da4c33a

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• Changed the default python version from 3.12 to 3.13, now that 3.13 is the latest stable release.

  erictraut

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  608819a

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• Improved performance of protocol matching, especially for complex recursive protocols. This addresses microsoft#9109. (microsoft#9168)

  erictraut

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Commits on Oct 7, 2024

• Fixed bug that leads to a false positive when a callable object uses a Callable type annotation for the self parameter in its own __call__ method. This addresses microsoft#9166. (microsoft#9167)

  erictraut

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  941758c

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• Backed out recent performance optimization that resulted in a regression for protocol matching in certain circumstances. This addresses microsoft#9153, microsoft#9132, and microsoft#9130. (microsof…

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  erictraut

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  23b4668

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Commits on Oct 6, 2024

• Fixed bug that results in a false positive when using a traditional (non-PEP 695) TypeVar in a type expression and assigning to a TypeForm. This addresses microsoft#9159. (microsoft#9160)

  erictraut

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  649a2ab

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• Add declaration on dataclass field symbol with converter (microsoft#9152)

  debonte

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  f55ee0f

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• Improved determinism of type evaluations involving unions of literal by taking into consideration literal values when sorting subtypes. (microsoft#9157)

  erictraut

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  077c802

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• Fixed a bug that leads to a false negative when a class-scoped variable is annotated with a value-constrained type variable and assigned a default value with one of the value constraints. This addr…

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  erictraut

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  14288f8

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• Fixed bug that results in incorrect type narrowing on assignment if the narrowed type is Self or another bound type variable. This addresses microsoft#9147. (microsoft#9154)

  erictraut

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  1af4b93

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Commits on Oct 5, 2024

• Removed provisional support for [PEP 746](https://discuss.python.org/t/pep-746-typedmetadata-for-type-checking-of-pep-593-annotated/53834) because the PEP has been modified, and there is disagreeme…

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  8ed69a9

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Commits on Oct 4, 2024

• Added limiter to sequence pattern matching logic to prevent a combinatoric explosion when performing tuple expansion during narrowing. This addresses microsoft#9149. (microsoft#9150)

  erictraut

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  bbab701

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Commits on Oct 3, 2024

• Enhanced isinstance narrowing logic to retain type arguments in cases where the filter type (the second argument) is a child of the un-narrowed type and the child has a type parameter that is use…

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  erictraut

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  cd5f5d3

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Commits on Oct 2, 2024

• Fixed bug that results in a false negative under certain circumstances when using PEP 695 syntax and a TypeVarTuple multiple times in a signature.

  erictraut

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  3b8ffed

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• Fixed bug that results in a false positive when Union and Unpack are used outside of a type expression. Normal type expression rules should not be applied in this case. This addresses microsoft…

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  erictraut

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• Added OmitTypeVarScopes flag to typePrinter. It's not currently used, but we're considering switching to this.

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  39a5a20

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• Refactored some code in the type evaluator to handle Unpack and * operators in type annotations in a common manner.

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• pull-pylance-with-pyright-1.1.383 (microsoft#9133)

  bschnurr

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  2439832

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Commits on Oct 1, 2024

• Published 1.1.383

  erictraut

  committed
  5e57e0a

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• Fixed bug that caused type alias to Never or NoReturn to lose its type alias association in some circumstances. (microsoft#9127)

  erictraut

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  606e12e

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• Fixed bug that results in a false negative when a type variable is defined with the expression .... This should be flagged as an illegal type expression. This addresses microsoft#9120. (microsoft…

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  erictraut

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• Fixed a performance regression caused by a recent bug fix that affects variance inference for recursive type aliases. This addresses microsoft#9118. (microsoft#9119)

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• Fixed several bugs related to the explicit specialization of a generic type alias parameterized by a single ParamSpec. Concatenate was being handled incorrectly. This addresses microsoft#9088. (m…

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  erictraut

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Commits on Sep 30, 2024

• Improved type evaluation performance in certain cases involving protocol matching for complex, nested protocols. This addresses microsoft#9109. (microsoft#9115)

  erictraut

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  0b02230

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• Renamed internal symbol for readability and improved some comments. No functional change.

  erictraut

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  6b19e98

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• Refactored code to eliminate some circular dependencies that have crept into some of the type evaluator modules. No functional change.

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  3fcce1b

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Commits on Sep 28, 2024

• Fixed bug that resulted in a false negative when assigning a specialized recursive generic type alias to itself when variance of its type parameters are not covariant. This addresses microsoft#9081. (

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  erictraut

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  7309394

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• Fixed bug that results in incorrect variance inference for some generic type aliases that use auto variance and nested callable types. (microsoft#9102)

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  erictraut

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• Reduced the minimum time between analysis passes from 20ms to 5ms to improve startup performance.

  erictraut

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  37363e1

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• Added "skipNativeLibraries" config option for environments that are guaranteed not to have native libraries (e.g. web-based environments or playgrounds).

  erictraut

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  4074d88

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