Published 1.1.314

Enhancement: Updated typeshed stubs to the latest version. This update includes some substantive changes to stdlib protocols and classes related to buffers. These changes will result in some compatibility issues for some libraries. For more details about the motivation for these changes, refer to PEP 688.

Regression Tests: Upgraded pyright’s CI process to include the execution of mypy_primer, a tool that was written by @hauntsaninja for mypy and typeshed to catch regressions. He extended the tool to support pyright. If you are a repo owner who uses pyright in your CI and would like us to include your project in pyright’s CI (to understand and prevent regressions that could affect your project), let us know.

Bug Fix: Fixed bug that resulted in a false negative when using the reportMissingTypeArgument check when defining an old-style type alias. This same bug resulted in inconsistent behavior between Union and |, which should be equivalent.

Bug Fix: Fixed a bug in the typeshed VERSIONS exclusions. It was falling back on the VERSIONS file in the packaged typeshed rather than using the custom typeshed path specified in the configuration or command line.

Bug Fix: Fixed a bug that led to a false negative when passing an unpacked tuple of length one to a function that requires more (or fewer) than one positional argument.

Performance: Reverted a recent internal refactoring because it resulted in increased peak memory usage in some cases.

Bug Fix: Fixed false positive error when using a *args: P.args as the first parameter in a method.

Bug Fix: Improved the protocol matching logic so it honors partially-solved type variables whose values are provided by other argument types in a call.

Bug Fix: Fixed a bug that led to infinite analysis time and heap exhaustion when analyzing an overloaded function that includes a ParamSpec that uses itself as an argument.

Bug Fix: Fixed a bug that led to a false positive reportIncompatibleMethodOverride error for overloaded method overrides in cases where the overloads are differentiated based on explicit types for the self or cls parameter.

Bug Fix: Fixed a regression that caused an incorrect type evaluation of a function that returns a callable with a ParamSpec that does not appear outside of the return type annotation.