Fixed bug that resulted in false negative when backslash followed by …#10867
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Fixed bug that resulted in false negative when backslash followed by …#10867
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…line feed occurs at end of file. This addresses #10814.
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Diff from mypy_primer, showing the effect of this PR on open source code: sympy (https://github.com/sympy/sympy)
+ .../projects/sympy/sympy/solvers/diophantine/diophantine.py:173:44 - error: Cannot access attribute "expand" for class "Basic"
+ Attribute "expand" is unknown (reportAttributeAccessIssue)
- .../projects/sympy/sympy/solvers/diophantine/diophantine.py:528:23 - error: Operator "+" not supported for types "Generator[Unknown | int, Unknown, None] | list[Unknown | int]" and "list[Unknown | int]"
+ .../projects/sympy/sympy/solvers/diophantine/diophantine.py:528:23 - error: Operator "+" not supported for types "Generator[Unknown | Literal[1], Unknown, None] | list[Unknown | Literal[1]]" and "list[Unknown | int]"
- Operator "+" not supported for types "Generator[Unknown | int, Unknown, None]" and "list[Unknown | int]" (reportOperatorIssue)
+ Operator "+" not supported for types "Generator[Unknown | Literal[1], Unknown, None]" and "list[Unknown | int]" (reportOperatorIssue)
+ .../projects/sympy/sympy/solvers/ode/hypergeometric.py:246:67 - error: Operator "**" not supported for types "Basic" and "Literal[2]" (reportOperatorIssue)
- Attribute "pop" is unknown (reportAttributeAccessIssue)
- .../projects/sympy/sympy/solvers/ode/ode.py:609:22 - error: Cannot access attribute "pop" for class "tuple[()]"
- Attribute "pop" is unknown (reportAttributeAccessIssue)
- .../projects/sympy/sympy/solvers/ode/ode.py:609:22 - error: Cannot access attribute "pop" for class "tuple[str, ...]"
- .../projects/sympy/sympy/solvers/ode/single.py:865:9 - error: Expression with type "tuple[ComplexInfinity | Unknown | Any, list[tuple[Unknown, Unknown]] | list[Unknown]] | tuple[ComplexInfinity | Unknown | Any, list[tuple[Unknown, Unknown]] | list[Unknown], list[tuple[Unknown, Unknown]] | list[Unknown]]" cannot be assigned to target tuple
+ .../projects/sympy/sympy/solvers/ode/single.py:865:9 - error: Expression with type "tuple[ComplexInfinity | NaN | Rational | Zero | Infinity | NegativeInfinity | Float | _NotImplementedType | Expr | Unknown | Any, list[tuple[Unknown, Unknown]] | list[Unknown]] | tuple[ComplexInfinity | NaN | Rational | Zero | Infinity | NegativeInfinity | Float | _NotImplementedType | Expr | Unknown | Any, list[tuple[Unknown, Unknown]] | list[Unknown], list[tuple[Unknown, Unknown]] | list[Unknown]]" cannot be assigned to target tuple
- Type "tuple[ComplexInfinity | Unknown | Any, list[tuple[Unknown, Unknown]] | list[Unknown], list[tuple[Unknown, Unknown]] | list[Unknown]]" is incompatible with target tuple
+ Type "tuple[ComplexInfinity | NaN | Rational | Zero | Infinity | NegativeInfinity | Float | _NotImplementedType | Expr | Unknown | Any, list[tuple[Unknown, Unknown]] | list[Unknown], list[tuple[Unknown, Unknown]] | list[Unknown]]" is incompatible with target tuple
+ .../projects/sympy/sympy/solvers/ode/single.py:2636:27 - error: Argument of type "One | NegativeOne | Zero | Integer | NaN | ComplexInfinity | Rational | Infinity | NegativeInfinity | Float | Number | Expr" cannot be assigned to parameter "stop" of type "SupportsIndex" in function "__new__"
+ Type "One | NegativeOne | Zero | Integer | NaN | ComplexInfinity | Rational | Infinity | NegativeInfinity | Float | Number | Expr" is not assignable to type "SupportsIndex"
+ "Expr" is incompatible with protocol "SupportsIndex"
+ "__index__" is not present (reportArgumentType)
- .../projects/sympy/sympy/solvers/solveset.py:775:18 - error: Argument of type "Unknown | None" cannot be assigned to parameter "expr" of type "Expr" in function "together"
+ .../projects/sympy/sympy/solvers/solveset.py:775:18 - error: Argument of type "Unknown | Expr | Any | None" cannot be assigned to parameter "expr" of type "Expr" in function "together"
- Type "Unknown | None" is not assignable to type "Expr"
+ Type "Unknown | Expr | Any | None" is not assignable to type "Expr"
- .../projects/sympy/sympy/solvers/solveset.py:1324:21 - error: Argument of type "One | Expr | Relational | Basic | NegativeOne | Zero | Integer | ComplexInfinity | NaN | Rational | Unknown | Add" cannot be assigned to parameter "args" of type "Expr | complex" in function "__new__"
- Type "One | Expr | Relational | Basic | NegativeOne | Zero | Integer | ComplexInfinity | NaN | Rational | Unknown | Add" is not assignable to type "Expr | complex"
- Type "Basic" is not assignable to type "Expr | complex"
- "Basic" is not assignable to "Expr"
- "Basic" is not assignable to "complex" (reportArgumentType)
- .../projects/sympy/sympy/stats/crv_types.py:2542:9 - error: Method "_cdf" overrides class "SingleContinuousDistribution" in an incompatible manner
- Return type mismatch: base method returns type "None", override returns type "ComplexInfinity | Unknown"
- Type "ComplexInfinity | Unknown" is not assignable to type "None"
- "ComplexInfinity" is not assignable to "None" (reportIncompatibleMethodOverride)
- .../projects/sympy/sympy/stats/crv_types.py:2721:9 - error: Method "_cdf" overrides class "SingleContinuousDistribution" in an incompatible manner
- Return type mismatch: base method returns type "None", override returns type "Expr | Unknown"
- Type "Expr | Unknown" is not assignable to type "None"
- "Expr" is not assignable to "None" (reportIncompatibleMethodOverride)
- .../projects/sympy/sympy/stats/symbolic_probability.py:74:9 - error: Method "doit" overrides class "Basic" in an incompatible manner
- Return type mismatch: base method returns type "Basic", override returns type "Unknown | Any | BernoulliDistribution | Probability | Zero | One | tuple[Unknown, ...] | Sum | Expr | NaN | Piecewise | Basic | ComplexInfinity | Float | Infinity | Integer | Lambda | Mul | NegativeInfinity | NegativeOne | Number | Rational | Integral | Literal[0] | None"
- Type "Unknown | Any | BernoulliDistribution | Probability | Zero | One | tuple[Unknown, ...] | Sum | Expr | NaN | Piecewise | Basic | ComplexInfinity | Float | Infinity | Integer | Lambda | Mul | NegativeInfinity | NegativeOne | Number | Rational | Integral | Literal[0] | None" is not assignable to type "Basic"
- "Literal[0]" is not assignable to "Basic" (reportIncompatibleMethodOverride)
- .../projects/sympy/sympy/stats/tests/test_continuous_rv.py:1542:12 - error: No overloads for "simplify" match the provided arguments (reportCallIssue)
- .../projects/sympy/sympy/stats/tests/test_continuous_rv.py:1542:21 - error: Argument of type "Unknown | Any | BernoulliDistribution | Probability | Zero | One | tuple[Unknown, ...] | Sum | Expr | NaN | Piecewise | Basic | ComplexInfinity | Float | Infinity | Integer | Lambda | Mul | NegativeInfinity | NegativeOne | Number | Rational | Integral | Literal[0] | None" cannot be assigned to parameter "expr" of type "Basic" in function "simplify"
- Type "Unknown | Any | BernoulliDistribution | Probability | Zero | One | tuple[Unknown, ...] | Sum | Expr | NaN | Piecewise | Basic | ComplexInfinity | Float | Infinity | Integer | Lambda | Mul | NegativeInfinity | NegativeOne | Number | Rational | Integral | Literal[0] | None" is not assignable to type "Basic"
- "Literal[0]" is not assignable to "Basic" (reportArgumentType)
- .../projects/sympy/sympy/stats/tests/test_continuous_rv.py:1544:12 - error: No overloads for "simplify" match the provided arguments (reportCallIssue)
- .../projects/sympy/sympy/stats/tests/test_continuous_rv.py:1544:21 - error: Argument of type "Unknown | Any | BernoulliDistribution | Probability | Zero | One | tuple[Unknown, ...] | Sum | Expr | NaN | Piecewise | Basic | ComplexInfinity | Float | Infinity | Integer | Lambda | Mul | NegativeInfinity | NegativeOne | Number | Rational | Integral | Literal[0] | None" cannot be assigned to parameter "expr" of type "Basic" in function "simplify"
- Type "Unknown | Any | BernoulliDistribution | Probability | Zero | One | tuple[Unknown, ...] | Sum | Expr | NaN | Piecewise | Basic | ComplexInfinity | Float | Infinity | Integer | Lambda | Mul | NegativeInfinity | NegativeOne | Number | Rational | Integral | Literal[0] | None" is not assignable to type "Basic"
- "Literal[0]" is not assignable to "Basic" (reportArgumentType)
- .../projects/sympy/sympy/stats/tests/test_continuous_rv.py:1549:12 - error: No overloads for "simplify" match the provided arguments (reportCallIssue)
- .../projects/sympy/sympy/stats/tests/test_continuous_rv.py:1549:21 - error: Argument of type "Unknown | Any | BernoulliDistribution | Probability | Zero | One | tuple[Unknown, ...] | Sum | Expr | NaN | Piecewise | Basic | ComplexInfinity | Float | Infinity | Integer | Lambda | Mul | NegativeInfinity | NegativeOne | Number | Rational | Integral | Literal[0] | None" cannot be assigned to parameter "expr" of type "Basic" in function "simplify"
- Type "Unknown | Any | BernoulliDistribution | Probability | Zero | One | tuple[Unknown, ...] | Sum | Expr | NaN | Piecewise | Basic | ComplexInfinity | Float | Infinity | Integer | Lambda | Mul | NegativeInfinity | NegativeOne | Number | Rational | Integral | Literal[0] | None" is not assignable to type "Basic"
- "Literal[0]" is not assignable to "Basic" (reportArgumentType)
- .../projects/sympy/sympy/stats/tests/test_finite_rv.py:33:23 - error: Operator "/" not supported for types "Unknown | Any | BernoulliDistribution | Probability | Zero | One | tuple[Unknown, ...] | Sum | Expr | NaN | Piecewise | Basic | ComplexInfinity | Float | Infinity | Integer | Lambda | Mul | NegativeInfinity | NegativeOne | Number | Rational | Integral | Literal[0] | None" and "Unknown | Any | BernoulliDistribution | Probability | Zero | One | tuple[Unknown, ...] | Sum | Expr | NaN | Piecewise | Basic | ComplexInfinity | Float | Infinity | Integer | Lambda | Mul | NegativeInfinity | NegativeOne | Number | Rational | Integral | Literal[0] | None"
... (truncated 1149 lines) ...
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erictraut
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Sep 1, 2025
* main: Changed the evaluated type of `__class__` from `type[Self]` to `type[<Enclosing class]`. This addresses #10685. (#10874) Added optimization that reduces the number of Uri objects that need to be created during type evaluation. This is an attempt to address #10832. (#10872) Fixed bug that causes a false negative when using unquoted types in a TypedDict functional class definition if the types are forward declared. This addresses #10612. (#10869) Fixed bug that resulted in false negative when backslash followed by line feed occurs at end of file. This addresses #10814. (#10867) Fixed false negative when a keyword parameter in a child class method overrides a method with a `**kwargs` in the parent and the type is incompatible. This addresses #10815. (#10866) Fixed regression introduced in 1.1.343 that results in nondeterministic (order-dependent) type evaluation under certain circumstances involving recursive type aliases. This addresses #10850. (#10865) Revert "Added support for tracking multiple constraint sets when performing protocol matching. This allows protocols with overloaded methods to contribute independent constraint sets. This addresses #9835. (#9864)" (#10863) Fixed bug that contributes to out-of-memory crashes under certain circumstances where a module's transitive import graph is very large and may not fit within the available heap space. (#10862) Bump tmp from 0.2.3 to 0.2.5 in /packages/vscode-pyright (#10824) Added support for `match_args` dataclass parameter. This addresses #10858. (#10861) Fixed bug that results in false negative when a `closed=False` is used in `TypedDict` that subclasses from a non-open `TypedDict` base class. This addresses #10859. (#10860) Revert "Reverted a recent change that appears to have affected performance on some projects. This attempts to address #10832. (#10841)" Improved performance of import resolution when there are large number… (#10855) Document editable installs with uv (#10854) Fixed a bug that results in spurious errors if a class decorator is a… (#10846) Fixed a bug that results in false positive errors when using `object` methods (like `__eq__`) on a `Sentinel` instance. This addresses #10773. (#10844) Fixed bug that results in incorrect literal math results for bitwise negation. This addresses #10834. (#10842) Reverted a recent change that appears to have affected performance on some projects. This attempts to address #10832. (#10841) pull-pylance-with-pyright-1.1.403-20250820-201137 (#10831)
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…line feed occurs at end of file. This addresses #10814.