Fixed bug that results in incorrect inferred type for an instance or … #9843
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…class variable assigned a value as part of a tuple expression target with an unpack operator (e.g. `a, *self.b = (1, 2, 3)`). This addresses #9842.
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Diff from mypy_primer, showing the effect of this PR on open source code: sympy (https://github.com/sympy/sympy)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:120:18 - error: Argument of type "Equality | Unknown | Relational | Unequality | Integer" cannot be assigned to parameter "expr" of type "Expr" in function "add"
+ /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:120:18 - error: Argument of type "Equality | Unknown" cannot be assigned to parameter "expr" of type "Expr" in function "add"
- Type "Equality | Unknown | Relational | Unequality | Integer" is not assignable to type "Expr"
+ Type "Equality | Unknown" is not assignable to type "Expr"
- "Relational" is not assignable to "Expr" (reportArgumentType)
+ "Equality" is not assignable to "Expr" (reportArgumentType)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:123:18 - error: Argument of type "Equality | Unknown | Relational | Unequality | Integer" cannot be assigned to parameter "expr" of type "Expr" in function "add"
+ /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:123:18 - error: Argument of type "Equality | Unknown" cannot be assigned to parameter "expr" of type "Expr" in function "add"
- Type "Equality | Unknown | Relational | Unequality | Integer" is not assignable to type "Expr"
+ Type "Equality | Unknown" is not assignable to type "Expr"
- "Relational" is not assignable to "Expr" (reportArgumentType)
+ "Equality" is not assignable to "Expr" (reportArgumentType)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:126:9 - error: Argument of type "Equality | Unknown | Relational | Unequality | Integer" cannot be assigned to parameter "expr" of type "Expr" in function "add"
+ /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:126:9 - error: Argument of type "Equality | Unknown" cannot be assigned to parameter "expr" of type "Expr" in function "add"
- Type "Equality | Unknown | Relational | Unequality | Integer" is not assignable to type "Expr"
+ Type "Equality | Unknown" is not assignable to type "Expr"
- "Relational" is not assignable to "Expr" (reportArgumentType)
+ "Equality" is not assignable to "Expr" (reportArgumentType)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:132:9 - error: Argument of type "Equality | Unknown | Relational | Unequality | Integer" cannot be assigned to parameter "expr" of type "Expr" in function "add"
+ /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:132:9 - error: Argument of type "Equality | Unknown" cannot be assigned to parameter "expr" of type "Expr" in function "add"
- Type "Equality | Unknown | Relational | Unequality | Integer" is not assignable to type "Expr"
+ Type "Equality | Unknown" is not assignable to type "Expr"
- "Relational" is not assignable to "Expr" (reportArgumentType)
+ "Equality" is not assignable to "Expr" (reportArgumentType)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:895:12 - error: Operator "/" not supported for types "Equality | Unknown | Relational | Unequality | Integer" and "Literal[2]"
+ /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:895:12 - error: Operator "/" not supported for types "Equality | Unknown" and "Literal[2]"
- Operator "/" not supported for types "Equality" and "Literal[2]"
- Operator "/" not supported for types "Relational" and "Literal[2]"
- Operator "/" not supported for types "Unequality" and "Literal[2]" (reportOperatorIssue)
+ Operator "/" not supported for types "Equality" and "Literal[2]" (reportOperatorIssue)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1863:12 - error: Cannot access attribute "combsimp" for class "Relational"
- Attribute "combsimp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1863:12 - error: Cannot access attribute "combsimp" for class "Unequality"
- Attribute "combsimp" is unknown (reportAttributeAccessIssue)
- Attribute "factor" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1911:14 - error: Cannot access attribute "factor" for class "Relational"
- Attribute "factor" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1911:14 - error: Cannot access attribute "factor" for class "Unequality"
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1918:14 - error: Cannot access attribute "combsimp" for class "Relational"
- Attribute "combsimp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1918:14 - error: Cannot access attribute "combsimp" for class "Unequality"
- Attribute "combsimp" is unknown (reportAttributeAccessIssue)
+ /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1992:22 - error: Argument of type "Equality | Unknown | NaN | Sum" cannot be assigned to parameter "x" of type "ConvertibleToFloat" in function "__new__"
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1932:12 - error: Cannot access attribute "combsimp" for class "Relational"
- Attribute "combsimp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1932:12 - error: Cannot access attribute "combsimp" for class "Unequality"
- Attribute "combsimp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:1992:22 - error: Argument of type "Equality | Unknown | Relational | Unequality | Integer | NaN | Sum" cannot be assigned to parameter "x" of type "ConvertibleToFloat" in function "__new__"
- Type "Equality | Unknown | Relational | Unequality | Integer | NaN | Sum" is not assignable to type "ConvertibleToFloat"
+ Type "Equality | Unknown | NaN | Sum" is not assignable to type "ConvertibleToFloat"
- Type "Relational" is not assignable to type "ConvertibleToFloat"
+ Type "Equality" is not assignable to type "ConvertibleToFloat"
- "Relational" is not assignable to "str"
+ "Equality" is not assignable to "str"
- "Relational" is incompatible with protocol "Buffer"
+ "Equality" is incompatible with protocol "Buffer"
- "Relational" is incompatible with protocol "SupportsFloat"
+ "Equality" is incompatible with protocol "SupportsFloat"
- "Relational" is incompatible with protocol "SupportsIndex"
+ "Equality" is incompatible with protocol "SupportsIndex"
- Attribute "gammasimp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:2074:56 - error: Cannot access attribute "gammasimp" for class "Relational"
- Attribute "gammasimp" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:2074:56 - error: Cannot access attribute "gammasimp" for class "Unequality"
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:2973:37 - error: Operator "*" not supported for types "Literal[2]" and "Equality | Unknown | Relational | Unequality | Integer | NaN | Sum"
+ /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:2973:37 - error: Operator "*" not supported for types "Literal[2]" and "Equality | Unknown | NaN | Sum"
- Operator "*" not supported for types "Literal[2]" and "Equality"
- Operator "*" not supported for types "Literal[2]" and "Relational"
- Operator "*" not supported for types "Literal[2]" and "Unequality" (reportOperatorIssue)
+ Operator "*" not supported for types "Literal[2]" and "Equality" (reportOperatorIssue)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:2978:17 - error: Operator "*" not supported for types "Literal[2]" and "Equality | Unknown | Relational | Unequality | Integer | NaN | Sum"
+ /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_wester.py:2978:17 - error: Operator "*" not supported for types "Literal[2]" and "Equality | Unknown | NaN | Sum"
- Operator "*" not supported for types "Literal[2]" and "Equality"
- Operator "*" not supported for types "Literal[2]" and "Relational"
- Operator "*" not supported for types "Literal[2]" and "Unequality" (reportOperatorIssue)
+ Operator "*" not supported for types "Literal[2]" and "Equality" (reportOperatorIssue)
- /tmp/mypy_primer/projects/sympy/sympy/vector/implicitregion.py:128:16 - error: Argument of type "Unknown | FiniteSet | ConditionSet" cannot be assigned to parameter "obj" of type "Sized" in function "len"
+ /tmp/mypy_primer/projects/sympy/sympy/vector/implicitregion.py:128:16 - error: Argument of type "Unknown | FiniteSet | Set | Union | Intersection | Complement | ConditionSet" cannot be assigned to parameter "obj" of type "Sized" in function "len"
- Type "Unknown | FiniteSet | ConditionSet" is not assignable to type "Sized"
+ Type "Unknown | FiniteSet | Set | Union | Intersection | Complement | ConditionSet" is not assignable to type "Sized"
- "ConditionSet" is incompatible with protocol "Sized"
+ "Set" is incompatible with protocol "Sized"
- /tmp/mypy_primer/projects/sympy/sympy/vector/implicitregion.py:129:20 - error: Type "list[Unknown | FiniteSet | ConditionSet]" is already specialized (reportInvalidTypeArguments)
+ /tmp/mypy_primer/projects/sympy/sympy/vector/implicitregion.py:129:20 - error: Type "list[Unknown | FiniteSet | Set | Union | Intersection | Complement | ConditionSet]" is already specialized (reportInvalidTypeArguments)
... (truncated 51 lines) ...
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…class variable assigned a value as part of a tuple expression target with an unpack operator (e.g.
a, *self.b = (1, 2, 3)). This addresses #9842.