Sourced from pyright's releases.

Published 1.1.251

Bug Fix: Fixed a bug that results in a false positive when the return type annotation of a function requires code flow analysis to evaluate and a call expression is located on a code path between the function and the declared type referenced by the return type annotation. The fix is to skip "NoReturn" analysis in the code flow engine in this case (and several other similar cases) because it's not necessary. This has the added benefit of improving performance.

Bug Fix: Fixed misleading diagnostic message associated with reportUnnecessaryComparison check when != operator is used in the expression.

Bug Fix: Added logic to better handle the case where a symbol is defined multiple times with a TypeAlias declaration. This is an error condition, but it does occur in some stdlib type stubs if pyright is configured to use "All" for the "pythonPlatform" setting.

Enhancement: Improved type verifier so it can target submodules that are installed using an editable install mechanism.

Performance: Added small performance enhancement for protocol matching. When a protocol mismatch is detected, the remainder of the members are skipped if the caller hasn't requested detailed diagnostic information.

Performance: Added protocol matching optimization for the case where the source type and the destination protocol are both non-generic classes. In this case, we can safely cache the protocol relationship and shortcut future checks.

Bug Fix: Fixed bug in type narrowing logic for expressions of the form "X not in Y".

Bug Fix: Fixed a bug in the isinstance and issubclass type narrowing code paths. They were not handling nested tuples for the second argument.

Enhancement: Extended the "X in Y" type narrowing to support dict, defaultdict and OrderedDict classes.

Bug Fix: Fixed bug that resulted in a false positive error when using == or != operator with type(None).

Bug Fix: Fixed a bug that led to a false negative in some instances when assigning an inappropriate type to a TypedDict key.

Bug Fix: Fixed a bug that led to a false positive when assigning a value to an index expression where the base type of the index was inferred rather than declared.

Bug Fix: Fixed a bug in completion provider that resulted in incomplete member suggestions when a LiteralString type is used.

Bug Fix: Fixed a bug that resulted in a false positive error when evaluating an expression a + b where a is a LiteralString. For purposes of binary expression evaluation, LiteralString should act like a str.

Published 1.1.250

Behavior Change: Removed the assumption that deferred evaluation of annotations is enabled by default in Python 3.11. It looks like this won't be the case.

Bug Fix: Fixed bug that resulted in false negative when using a variable in a type annotation if the type of that variable evaluated to Unknown.

Bug Fix: Fixed bug in code flow engine that caused type narrowing to fail in some cases where a conditional check was nested at least two loops deep.

Enhancement: Enhanced TypedDict support in completion provider to support unions that contain TypedDicts.

Bug Fix: Fixed bug that resulted in false negative when dunder methods are assigned as instance variables rather than class variables.

Bug Fix: Fixed bug that caused __slots__ entries to be treated as instance variables rather than class variables when looking up dundered methods.

Bug Fix: Fixed a bug that led to a false positive error when using a variable or parameter of type type[T] in a class pattern for a case statement.

Bug Fix: Fixed bug that resulted in a false negative when assigning a union that included an Unknown or Any to another type when invariance was enforced (e.g. list[Any | str] was considered assignable to list[int]).

Enhancement: Updated typeshed stubs to the latest version.

Bug Fix: Fixed bug that resulted in incorrect type evaluation for a recursive call to a generic function.

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• b460345 Published 1.1.251
• 8a9b23b Published 1.1.250
• bb79688 Published 1.1.249
• e9189b5 Published 1.1.248
• f4383ab Published 1.1.247
• e0e07d3 Published 1.1.246
• ccc95e0 Published 1.1.245
• 80858f6 Published 1.1.244
• 00b8d86 Published 1.1.243
• 831efad Published 1.1.242
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