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Fixed a bug that results in spurious errors if a class decorator is a…#10846

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erictraut merged 2 commits intomainfrom
Issue-10836
Aug 25, 2025
Merged

Fixed a bug that results in spurious errors if a class decorator is a…#10846
erictraut merged 2 commits intomainfrom
Issue-10836

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…pplied to builtins.tuple. This addresses #10836.

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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/ode/nonhomogeneous.py:467:28 - error: Argument of type "Unknown | None" cannot be assigned to parameter "expr" of type "Expr" in function "make_args"
+   .../projects/sympy/sympy/solvers/ode/nonhomogeneous.py:467:28 - error: Argument of type "Unknown | Expr | Any | None" cannot be assigned to parameter "expr" of type "Expr" in function "make_args"
-     Type "Unknown | None" is not assignable to type "Expr"
+     Type "Unknown | Expr | Any | None" is not assignable to type "Expr"
+     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/ode.py:1515:38 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:1516:38 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:1526:9 - error: No overloads for "update" match the provided arguments (reportCallIssue)
+   .../projects/sympy/sympy/solvers/ode/ode.py:1526:12 - error: "update" is not a known attribute of "None" (reportOptionalMemberAccess)
+   .../projects/sympy/sympy/solvers/ode/ode.py:1526:19 - error: Argument of type "Unknown | dict[Unknown, Unknown] | None" cannot be assigned to parameter "m" of type "Iterable[tuple[str, Unknown]]" in function "update"
+     Type "Unknown | dict[Unknown, Unknown] | None" is not assignable to type "Iterable[tuple[str, Unknown]]"
+       "None" is incompatible with protocol "Iterable[tuple[str, Unknown]]"
+         "__iter__" is not present (reportArgumentType)
+   .../projects/sympy/sympy/solvers/ode/ode.py:1533:43 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:1533:64 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:1539:9 - error: No overloads for "update" match the provided arguments (reportCallIssue)
+   .../projects/sympy/sympy/solvers/ode/ode.py:1539:12 - error: "update" is not a known attribute of "None" (reportOptionalMemberAccess)
+   .../projects/sympy/sympy/solvers/ode/ode.py:1539:19 - error: Argument of type "Unknown | dict[Unknown, Unknown] | None" cannot be assigned to parameter "m" of type "Iterable[tuple[str, Unknown]]" in function "update"
+     Type "Unknown | dict[Unknown, Unknown] | None" is not assignable to type "Iterable[tuple[str, Unknown]]"
+       "None" is incompatible with protocol "Iterable[tuple[str, Unknown]]"
+         "__iter__" is not present (reportArgumentType)
+   .../projects/sympy/sympy/solvers/ode/ode.py:1546:43 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:1546:74 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:1552:9 - error: No overloads for "update" match the provided arguments (reportCallIssue)
+   .../projects/sympy/sympy/solvers/ode/ode.py:1552:12 - error: "update" is not a known attribute of "None" (reportOptionalMemberAccess)
+   .../projects/sympy/sympy/solvers/ode/ode.py:1552:19 - error: Argument of type "Unknown | dict[Unknown, Unknown] | None" cannot be assigned to parameter "m" of type "Iterable[tuple[str, Unknown]]" in function "update"
+     Type "Unknown | dict[Unknown, Unknown] | None" is not assignable to type "Iterable[tuple[str, Unknown]]"
+       "None" is incompatible with protocol "Iterable[tuple[str, Unknown]]"
+         "__iter__" is not present (reportArgumentType)
+   .../projects/sympy/sympy/solvers/ode/ode.py:1559:49 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:1559:70 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
-   .../projects/sympy/sympy/solvers/ode/ode.py:1690:36 - error: Cannot access attribute "lhs" for class "Expr"
-     Attribute "lhs" is unknown (reportAttributeAccessIssue)
-   .../projects/sympy/sympy/solvers/ode/ode.py:1690:55 - error: Cannot access attribute "rhs" for class "Expr"
-     Attribute "rhs" is unknown (reportAttributeAccessIssue)
-   .../projects/sympy/sympy/solvers/ode/ode.py:1691:36 - error: Cannot access attribute "lhs" for class "Expr"
-     Attribute "lhs" is unknown (reportAttributeAccessIssue)
-   .../projects/sympy/sympy/solvers/ode/ode.py:1692:17 - error: No overloads for "__setitem__" match the provided arguments (reportCallIssue)
-   .../projects/sympy/sympy/solvers/ode/ode.py:1692:17 - error: Argument of type "Equality | BooleanFalse | BooleanTrue | Unknown | Expr" cannot be assigned to parameter "value" of type "Equality | BooleanFalse | BooleanTrue" in function "__setitem__"
-     Type "Equality | BooleanFalse | BooleanTrue | Unknown | Expr" is not assignable to type "Equality | BooleanFalse | BooleanTrue"
-       Type "Expr" is not assignable to type "Equality | BooleanFalse | BooleanTrue"
-         "Expr" is not assignable to "Equality"
-         "Expr" is not assignable to "BooleanFalse"
-         "Expr" is not assignable to "BooleanTrue" (reportArgumentType)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3379:7 - error: "update" is not a known attribute of "None" (reportOptionalMemberAccess)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3379:38 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3380:7 - error: "update" is not a known attribute of "None" (reportOptionalMemberAccess)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3380:38 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3381:14 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3382:14 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3383:14 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3395:50 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3396:50 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3397:50 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3437:5 - error: No overloads for "update" match the provided arguments (reportCallIssue)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3437:7 - error: "update" is not a known attribute of "None" (reportOptionalMemberAccess)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3437:14 - error: Argument of type "Unknown | dict[Unknown, Unknown] | None" cannot be assigned to parameter "m" of type "Iterable[tuple[str, Unknown]]" in function "update"
+     Type "Unknown | dict[Unknown, Unknown] | None" is not assignable to type "Iterable[tuple[str, Unknown]]"
+       "None" is incompatible with protocol "Iterable[tuple[str, Unknown]]"
+         "__iter__" is not present (reportArgumentType)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3438:18 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3438:43 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3439:9 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3439:16 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3439:24 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3439:31 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3440:9 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3440:15 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3440:23 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3440:30 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3441:7 - error: "update" is not a known attribute of "None" (reportOptionalMemberAccess)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3441:46 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3441:54 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3442:9 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3442:19 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3442:29 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+   .../projects/sympy/sympy/solvers/ode/ode.py:3443:10 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)

... (truncated 407 lines) ...

@erictraut erictraut merged commit cd980e2 into main Aug 25, 2025
16 checks passed
@erictraut erictraut deleted the Issue-10836 branch August 25, 2025 04:21
erictraut added a commit that referenced this pull request 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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