Fixed bug that results in a false positive error under certain circum…#10210
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…stances involving a type variable with an upper bound of `type[T]` that is assigned to another type variable. This addresses #10207.
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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/core/singleton.py:191:45 - error: Argument of type "Self@Singleton" cannot be assigned to parameter "cls" of type "type[Self@Basic]" in function "__new__" (reportArgumentType)
+ /tmp/mypy_primer/projects/sympy/sympy/core/singleton.py:191:45 - error: Argument of type "Self@Singleton" cannot be assigned to parameter "cls" of type "type[Self@Basic]" in function "__new__"
+ "Singleton*" is not assignable to "Basic" (reportArgumentType)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/matchpy_connector.py:288:16 - error: Type "Basic" is not assignable to declared type "Expr"
- "Basic" is not assignable to "Expr" (reportAssignmentType)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_autowrap.py
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_autowrap.py:267:14 - error: Cannot access attribute "_imp_" for class "type[AppliedUndef]"
- Attribute "_imp_" is unknown (reportAttributeAccessIssue)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_autowrap.py:267:14 - error: Cannot access attribute "_imp_" for class "UndefinedFunction"
- Attribute "_imp_" is unknown (reportAttributeAccessIssue)
- /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"
+ /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"
- Type "Equality | Unknown" is not assignable to type "Expr"
- "Equality" is not assignable to "Expr" (reportArgumentType)
- /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:120:70 - error: Argument of type "list[Unequality | Unknown | Equality | Relational]" cannot be assigned to parameter "conditions_nonfalse" of type "List[Expr]" in function "add"
- Type "Unequality | Unknown | Equality | Relational" is not assignable to type "Expr"
+ Type "Equality | Unknown | Relational | Unequality | Integer" is not assignable to type "Expr"
- "Relational" is not assignable to "Expr"
- Type "Unequality | Unknown | Equality | Relational" is not assignable to type "Expr"
- "Relational" is not assignable to "Expr"
- Type "Unequality | Unknown | Equality | Relational" is not assignable to type "Expr"
- "Relational" is not assignable to "Expr"
- Type "Unequality | Unknown | Equality | Relational" is not assignable to type "Expr"
- /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"
+ /tmp/mypy_primer/projects/sympy/sympy/utilities/tests/test_matchpy_connector.py:120:70 - error: Argument of type "list[Unequality | Integer]" cannot be assigned to parameter "conditions_nonfalse" of type "List[Expr]" in function "add"
- Type "Equality | Unknown" is not assignable to type "Expr"
+ Type "Unequality | Integer" is not assignable to type "Expr"
+ "Unequality" is not assignable to "Expr"
+ Type "Unequality | Integer" is not assignable to type "Expr"
+ "Unequality" is not assignable to "Expr"
+ Type "Unequality | Integer" is not assignable to type "Expr"
+ "Unequality" is not assignable to "Expr"
+ Type "Unequality | Integer" is not assignable to type "Expr"
- "Equality" is not assignable to "Expr" (reportArgumentType)
+ "Unequality" 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"
+ Type "Equality | Unknown | Relational | Unequality | Integer" is not assignable to type "Expr"
+ "Relational" 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" 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 | Relational | Unequality | Integer" cannot be assigned to parameter "expr" of type "Expr" in function "add"
- Type "Equality | Unknown" is not assignable to type "Expr"
+ Type "Equality | Unknown | Relational | Unequality | Integer" is not assignable to type "Expr"
- "Equality" is not assignable to "Expr" (reportArgumentType)
+ "Relational" 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" 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 | Relational | Unequality | Integer" cannot be assigned to parameter "expr" of type "Expr" in function "add"
- Type "Equality | Unknown" is not assignable to type "Expr"
+ Type "Equality | Unknown | Relational | Unequality | Integer" is not assignable to type "Expr"
- "Equality" is not assignable to "Expr" (reportArgumentType)
+ "Relational" 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" and "Literal[2]"
+ /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]"
+ Operator "/" not supported for types "Equality" and "Literal[2]"
+ Operator "/" not supported for types "Relational" and "Literal[2]"
- Operator "/" not supported for types "Equality" and "Literal[2]" (reportOperatorIssue)
+ Operator "/" not supported for types "Unequality" 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)
+ /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"
+ Attribute "factor" is unknown (reportAttributeAccessIssue)
+ 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 "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"
+ /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 | 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: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 | NaN | Sum" is not assignable to type "ConvertibleToFloat"
+ Type "Equality | Unknown | Relational | Unequality | Integer | NaN | Sum" is not assignable to type "ConvertibleToFloat"
- Type "Equality" is not assignable to type "ConvertibleToFloat"
+ Type "Relational" is not assignable to type "ConvertibleToFloat"
- "Equality" is not assignable to "str"
+ "Relational" is not assignable to "str"
- "Equality" is incompatible with protocol "Buffer"
+ "Relational" is incompatible with protocol "Buffer"
- "Equality" is incompatible with protocol "SupportsFloat"
+ "Relational" is incompatible with protocol "SupportsFloat"
- "Equality" is incompatible with protocol "SupportsIndex"
+ "Relational" is incompatible with protocol "SupportsIndex"
- /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: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__"
... (truncated 30 lines) ...
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…stances involving a type variable with an upper bound of
type[T]that is assigned to another type variable. This addresses #10207.