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Align Unknown narrowing with other narrowing functions
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Diff from mypy_primer, showing the effect of this PR on open source code: nionutils (https://github.com/nion-software/nionutils)
+ .../projects/nionutils/nion/utils/ListModel.py:661:56 - error: "item_changed_event" is not a known attribute of "None" (reportOptionalMemberAccess)
- 14 errors, 0 warnings, 0 informations
+ 15 errors, 0 warnings, 0 informations
pytest-autoprofile (https://gitlab.com/TTsangSC/pytest-autoprofile)
+ .../projects/pytest-autoprofile/src/pytest_autoprofile/plugin.py:163:12 - error: Type "Any | None" is not assignable to return type "int"
+ Type "Any | None" is not assignable to type "int"
+ "None" is not assignable to "int" (reportReturnType)
- 125 errors, 4 warnings, 0 informations
+ 126 errors, 4 warnings, 0 informations
ibis (https://github.com/ibis-project/ibis)
- .../projects/ibis/ibis/backends/athena/__init__.py:225:57 - error: Argument of type "tuple[Unknown, Unknown]" cannot be assigned to parameter "database" of type "str | None" in function "table"
+ .../projects/ibis/ibis/backends/athena/__init__.py:225:57 - error: Argument of type "tuple[Unknown | None, Unknown | None]" cannot be assigned to parameter "database" of type "str | None" in function "table"
- Type "tuple[Unknown, Unknown]" is not assignable to type "str | None"
+ Type "tuple[Unknown | None, Unknown | None]" is not assignable to type "str | None"
- "tuple[Unknown, Unknown]" is not assignable to "str"
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "str"
- "tuple[Unknown, Unknown]" is not assignable to "None" (reportArgumentType)
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "None" (reportArgumentType)
- .../projects/ibis/ibis/backends/bigquery/__init__.py:1327:42 - error: Argument of type "tuple[Unknown, str | None]" cannot be assigned to parameter "database" of type "str | None" in function "table"
+ .../projects/ibis/ibis/backends/bigquery/__init__.py:1327:42 - error: Argument of type "tuple[Unknown | None, str | None]" cannot be assigned to parameter "database" of type "str | None" in function "table"
- Type "tuple[Unknown, str | None]" is not assignable to type "str | None"
+ Type "tuple[Unknown | None, str | None]" is not assignable to type "str | None"
- "tuple[Unknown, str | None]" is not assignable to "str"
+ "tuple[Unknown | None, str | None]" is not assignable to "str"
- "tuple[Unknown, str | None]" is not assignable to "None" (reportArgumentType)
+ "tuple[Unknown | None, str | None]" is not assignable to "None" (reportArgumentType)
+ .../projects/ibis/ibis/backends/oracle/__init__.py:502:43 - error: Argument of type "tuple[Unknown | None, Unknown | None]" cannot be assigned to parameter "database" of type "tuple[str, str] | str | None" in function "drop_table"
+ Type "tuple[Unknown | None, Unknown | None]" is not assignable to type "tuple[str, str] | str | None"
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "tuple[str, str]"
+ Tuple entry 1 is incorrect type
+ Type "Unknown | None" is not assignable to type "str"
+ "None" is not assignable to "str"
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "str"
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "None" (reportArgumentType)
- Return type mismatch: base method returns type "(value: Unknown, dtype: Unknown = dtype) -> (Unknown | Timestamp)", override returns type "(date_string: str) -> Timestamp"
+ Return type mismatch: base method returns type "(value: Unknown, dtype: Unknown = dtype) -> (Timestamp | Unknown | None)", override returns type "(date_string: str) -> Timestamp"
- Type "(date_string: str) -> Timestamp" is not assignable to type "(value: Unknown, dtype: Unknown = dtype) -> (Unknown | Timestamp)"
+ Type "(date_string: str) -> Timestamp" is not assignable to type "(value: Unknown, dtype: Unknown = dtype) -> (Timestamp | Unknown | None)"
+ .../projects/ibis/ibis/backends/pyspark/__init__.py:699:42 - error: Argument of type "tuple[Unknown | None, Unknown | None]" cannot be assigned to parameter "database" of type "tuple[str, str] | str | None" in function "table"
+ Type "tuple[Unknown | None, Unknown | None]" is not assignable to type "tuple[str, str] | str | None"
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "tuple[str, str]"
+ Tuple entry 1 is incorrect type
+ Type "Unknown | None" is not assignable to type "str"
+ "None" is not assignable to "str"
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "str"
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "None" (reportArgumentType)
- Return type mismatch: base method returns type "(value: Unknown, dtype: Unknown = dtype) -> (Unknown | Timestamp)", override returns type "(value: Unknown) -> Unknown"
+ Return type mismatch: base method returns type "(value: Unknown, dtype: Unknown = dtype) -> (Timestamp | Unknown | None)", override returns type "(value: Unknown) -> Unknown"
- Type "(value: Unknown) -> Unknown" is not assignable to type "(value: Unknown, dtype: Unknown = dtype) -> (Unknown | Timestamp)"
+ Type "(value: Unknown) -> Unknown" is not assignable to type "(value: Unknown, dtype: Unknown = dtype) -> (Timestamp | Unknown | None)"
- Return type mismatch: base method returns type "(value: Unknown, dtype: Unknown = dtype) -> (Unknown | Timestamp)", override returns type "(date_string: str) -> Timestamp"
+ Return type mismatch: base method returns type "(value: Unknown, dtype: Unknown = dtype) -> (Timestamp | Unknown | None)", override returns type "(date_string: str) -> Timestamp"
- Type "(date_string: str) -> Timestamp" is not assignable to type "(value: Unknown, dtype: Unknown = dtype) -> (Unknown | Timestamp)"
+ Type "(date_string: str) -> Timestamp" is not assignable to type "(value: Unknown, dtype: Unknown = dtype) -> (Timestamp | Unknown | None)"
+ .../projects/ibis/ibis/backends/sql/__init__.py:253:42 - error: Argument of type "tuple[Unknown | None, Unknown | None]" cannot be assigned to parameter "database" of type "tuple[str, str] | str | None" in function "table"
+ Type "tuple[Unknown | None, Unknown | None]" is not assignable to type "tuple[str, str] | str | None"
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "tuple[str, str]"
+ Tuple entry 1 is incorrect type
+ Type "Unknown | None" is not assignable to type "str"
+ "None" is not assignable to "str"
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "str"
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "None" (reportArgumentType)
+ .../projects/ibis/ibis/backends/sql/__init__.py:453:48 - error: Argument of type "tuple[Unknown | None, Unknown | None]" cannot be assigned to parameter "database" of type "str | tuple[str, str] | None" in function "truncate_table"
+ Type "tuple[Unknown | None, Unknown | None]" is not assignable to type "str | tuple[str, str] | None"
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "str"
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "tuple[str, str]"
+ Tuple entry 1 is incorrect type
+ Type "Unknown | None" is not assignable to type "str"
+ "None" is not assignable to "str"
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "None" (reportArgumentType)
+ .../projects/ibis/ibis/backends/trino/__init__.py:514:57 - error: Argument of type "tuple[Unknown | None, Unknown | None]" cannot be assigned to parameter "database" of type "tuple[str, str] | str | None" in function "table"
+ Type "tuple[Unknown | None, Unknown | None]" is not assignable to type "tuple[str, str] | str | None"
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "tuple[str, str]"
+ Tuple entry 1 is incorrect type
+ Type "Unknown | None" is not assignable to type "str"
+ "None" is not assignable to "str"
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "str"
+ "tuple[Unknown | None, Unknown | None]" is not assignable to "None" (reportArgumentType)
+ .../projects/ibis/ibis/expr/builders.py:258:26 - error: "None" is not iterable
+ "__iter__" method not defined (reportGeneralTypeIssues)
+ .../projects/ibis/ibis/expr/builders.py:270:26 - error: "None" is not iterable
+ "__iter__" method not defined (reportGeneralTypeIssues)
+ .../projects/ibis/ibis/expr/builders.py:283:36 - error: Argument of type "Unknown | None" cannot be assigned to parameter "value" of type "Value[T@WindowBoundary, S@WindowBoundary]" in function "__init__"
+ Type "Unknown | None" is not assignable to type "Value[T@WindowBoundary, S@WindowBoundary]"
+ "None" is not assignable to "Value[T@WindowBoundary, S@WindowBoundary]" (reportArgumentType)
+ .../projects/ibis/ibis/expr/builders.py:284:36 - error: Argument of type "Unknown | None" cannot be assigned to parameter "value" of type "Value[T@WindowBoundary, S@WindowBoundary]" in function "__init__"
+ Type "Unknown | None" is not assignable to type "Value[T@WindowBoundary, S@WindowBoundary]"
+ "None" is not assignable to "Value[T@WindowBoundary, S@WindowBoundary]" (reportArgumentType)
+ .../projects/ibis/ibis/expr/builders.py:289:43 - error: Argument of type "Unknown | None" cannot be assigned to parameter "value" of type "Value[T@WindowBoundary, S@WindowBoundary]" in function "__init__"
+ Type "Unknown | None" is not assignable to type "Value[T@WindowBoundary, S@WindowBoundary]"
+ "None" is not assignable to "Value[T@WindowBoundary, S@WindowBoundary]" (reportArgumentType)
+ .../projects/ibis/ibis/expr/builders.py:293:49 - error: Argument of type "Unknown | None" cannot be assigned to parameter "value" of type "Value[T@WindowBoundary, S@WindowBoundary]" in function "__init__"
+ Type "Unknown | None" is not assignable to type "Value[T@WindowBoundary, S@WindowBoundary]"
+ "None" is not assignable to "Value[T@WindowBoundary, S@WindowBoundary]" (reportArgumentType)
- .../projects/ibis/ibis/expr/types/strings.py:110:42 - error: Argument of type "Any | Expr" cannot be assigned to parameter "start" of type "Value[Integer, Any] | None" in function "__init__"
+ .../projects/ibis/ibis/expr/types/strings.py:110:42 - error: Argument of type "Expr | Any | None" cannot be assigned to parameter "start" of type "Value[Integer, Any] | None" in function "__init__"
- Type "Any | Expr" is not assignable to type "Value[Integer, Any] | None"
... (truncated 7 lines) ...
sympy (https://github.com/sympy/sympy)
+ .../projects/sympy/sympy/core/expr.py:1009:14 - error: "is_comparable" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/sympy/sympy/core/function.py:1032:32 - error: Object of type "None" cannot be used as iterable value (reportOptionalIterable)
- Return type mismatch: base method returns type "None", override returns type "ReciprocalHyperbolicFunction | Expr | Unknown"
+ Return type mismatch: base method returns type "None", override returns type "ReciprocalHyperbolicFunction | Expr | Unknown | None"
- Type "ReciprocalHyperbolicFunction | Expr | Unknown" is not assignable to type "None"
+ Type "ReciprocalHyperbolicFunction | Expr | Unknown | None" is not assignable to type "None"
- Return type mismatch: base method returns type "None", override returns type "ReciprocalTrigonometricFunction | Expr | Unknown"
+ Return type mismatch: base method returns type "None", override returns type "ReciprocalTrigonometricFunction | Expr | Unknown | None"
- Type "ReciprocalTrigonometricFunction | Expr | Unknown" is not assignable to type "None"
+ Type "ReciprocalTrigonometricFunction | Expr | Unknown | None" is not assignable to type "None"
+ .../projects/sympy/sympy/functions/elementary/trigonometric.py:1719:17 - error: Operator "-" not supported for "None" (reportOptionalOperand)
+ .../projects/sympy/sympy/logic/tests/test_inference.py:405:19 - error: "z3types" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/sympy/sympy/ntheory/residue_ntheory.py:1648:12 - error: "None" is not iterable
+ "__iter__" method not defined (reportGeneralTypeIssues)
+ .../projects/sympy/sympy/ntheory/residue_ntheory.py:1910:12 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+ .../projects/sympy/sympy/ntheory/tests/test_modular.py
+ .../projects/sympy/sympy/ntheory/tests/test_modular.py:8:16 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+ .../projects/sympy/sympy/polys/modulargcd.py:151:21 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+ .../projects/sympy/sympy/polys/modulargcd.py:622:27 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+ .../projects/sympy/sympy/printing/tests/test_torch.py:230:28 - error: "rand" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/sympy/sympy/printing/tests/test_torch.py:234:18 - error: "allclose" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/sympy/sympy/printing/tests/test_torch.py:245:24 - error: "tensor" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/sympy/sympy/printing/tests/test_torch.py:245:61 - error: "float64" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/sympy/sympy/printing/tests/test_torch.py:246:18 - error: "allclose" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/sympy/sympy/printing/tests/test_torch.py:277:24 - error: "tensor" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/sympy/sympy/printing/tests/test_torch.py:277:61 - error: "float64" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/sympy/sympy/printing/tests/test_torch.py:280:22 - error: "linalg" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/sympy/sympy/printing/tests/test_torch.py:281:18 - error: "allclose" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/sympy/sympy/series/formal.py:778:19 - error: "free_symbols" is not a known attribute of "None" (reportOptionalMemberAccess)
- .../projects/sympy/sympy/solvers/ode/hypergeometric.py:247:67 - error: Operator "**" not supported for types "Basic" and "Literal[2]" (reportOperatorIssue)
+ .../projects/sympy/sympy/solvers/ode/lie_group.py:619:61 - error: Operator "-" not supported for type "Unknown | Basic" (reportOperatorIssue)
- .../projects/sympy/sympy/solvers/ode/nonhomogeneous.py:468:28 - error: Argument of type "Expr | Unknown | None" cannot be assigned to parameter "expr" of type "Expr" in function "make_args"
+ .../projects/sympy/sympy/solvers/ode/nonhomogeneous.py:468:28 - error: Argument of type "Unknown | None" cannot be assigned to parameter "expr" of type "Expr" in function "make_args"
- Type "Expr | Unknown | None" is not assignable to type "Expr"
+ Type "Unknown | None" is not assignable to type "Expr"
+ Attribute "pop" is unknown (reportAttributeAccessIssue)
+ .../projects/sympy/sympy/solvers/ode/ode.py:610:22 - error: Cannot access attribute "pop" for class "tuple[()]"
+ Attribute "pop" is unknown (reportAttributeAccessIssue)
+ .../projects/sympy/sympy/solvers/ode/ode.py:610:22 - error: Cannot access attribute "pop" for class "tuple[str, ...]"
- .../projects/sympy/sympy/solvers/ode/single.py:867:9 - 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
- Type "tuple[ComplexInfinity | Unknown | Any, list[tuple[Unknown, Unknown]] | list[Unknown], list[tuple[Unknown, Unknown]] | list[Unknown]]" is incompatible with target tuple
- Tuple size mismatch; expected 2 but received 3 (reportAssignmentType)
+ .../projects/sympy/sympy/solvers/ode/single.py:2646:27 - error: Argument of type "One | NegativeOne | Zero | Integer | NaN | ComplexInfinity | Rational | Infinity | NegativeInfinity | Float | Number | Expr | Unknown | int" 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 | Unknown | int" is not assignable to type "SupportsIndex"
+ "Expr" is incompatible with protocol "SupportsIndex"
+ "__index__" is not present (reportArgumentType)
- .../projects/sympy/sympy/solvers/ode/single.py:2652:9 - error: Operator "+=" not supported for types "Unknown | Any | Zero | One | NegativeOne | Integer | NaN | ComplexInfinity | Rational | Infinity | NegativeInfinity | Float | Number | Expr" and "Basic | Any | Unknown"
+ .../projects/sympy/sympy/solvers/ode/single.py:2652:9 - error: Operator "+=" not supported for types "One | NegativeOne | Zero | Integer | NaN | ComplexInfinity | Rational | Infinity | NegativeInfinity | Float | Number | Expr | Any | Unknown" and "Basic | Any | Unknown"
- .../projects/sympy/sympy/solvers/ode/systems.py:1214:26 - error: Argument of type "dict[str, str | Unknown | Expr | bool | Symbol]" cannot be assigned to parameter "m" of type "Iterable[tuple[str, str]]" in function "update"
+ .../projects/sympy/sympy/solvers/ode/systems.py:1214:26 - error: Argument of type "dict[str, str | Unknown | Pow | bool | Symbol]" cannot be assigned to parameter "m" of type "Iterable[tuple[str, str]]" in function "update"
- .../projects/sympy/sympy/stats/crv_types.py:2543:9 - 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:2722:9 - 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:75:9 - 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 | ZeroMatrix | NaN | Piecewise | Basic | ComplexInfinity | Float | Infinity | Integer | Lambda | Mul | NegativeInfinity | NegativeOne | Number | Rational | Integral | Literal[0]"
- Type "Unknown | Any | BernoulliDistribution | Probability | Zero | One | tuple[Unknown, ...] | Sum | Expr | ZeroMatrix | NaN | Piecewise | Basic | ComplexInfinity | Float | Infinity | Integer | Lambda | Mul | NegativeInfinity | NegativeOne | Number | Rational | Integral | Literal[0]" is not assignable to type "Basic"
- "Literal[0]" is not assignable to "Basic" (reportIncompatibleMethodOverride)
- .../projects/sympy/sympy/stats/tests/test_continuous_rv.py:1543:12 - error: No overloads for "simplify" match the provided arguments (reportCallIssue)
- .../projects/sympy/sympy/stats/tests/test_continuous_rv.py:1543:21 - error: Argument of type "Unknown | Any | BernoulliDistribution | Probability | Zero | One | tuple[Unknown, ...] | Sum | Expr | ZeroMatrix | NaN | Piecewise | Basic | ComplexInfinity | Float | Infinity | Integer | Lambda | Mul | NegativeInfinity | NegativeOne | Number | Rational | Integral | Literal[0]" cannot be assigned to parameter "expr" of type "Basic" in function "simplify"
- Type "Unknown | Any | BernoulliDistribution | Probability | Zero | One | tuple[Unknown, ...] | Sum | Expr | ZeroMatrix | NaN | Piecewise | Basic | ComplexInfinity | Float | Infinity | Integer | Lambda | Mul | NegativeInfinity | NegativeOne | Number | Rational | Integral | Literal[0]" is not assignable to type "Basic"
- "Literal[0]" is not assignable to "Basic" (reportArgumentType)
... (truncated 1165 lines) ...
urllib3 (https://github.com/urllib3/urllib3)
+ .../projects/urllib3/test/contrib/emscripten/conftest.py
+ .../projects/urllib3/test/contrib/emscripten/conftest.py:32:42 - error: Argument of type "Any | None" cannot be assigned to parameter "args" of type "StrPath" in function "__new__"
+ Type "Any | None" is not assignable to type "StrPath"
+ Type "None" is not assignable to type "StrPath"
+ "None" is not assignable to "str"
+ "None" is incompatible with protocol "PathLike[str]"
+ "__fspath__" is not present (reportArgumentType)
+ .../projects/urllib3/test/contrib/emscripten/conftest.py:328:51 - error: "startswith" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/urllib3/test/contrib/emscripten/conftest.py:336:53 - error: "startswith" is not a known attribute of "None" (reportOptionalMemberAccess)
- 154 errors, 14 warnings, 0 informations
+ 157 errors, 14 warnings, 0 informations
pytest (https://github.com/pytest-dev/pytest)
+ .../projects/pytest/src/_pytest/debugging.py:144:32 - error: Cannot assign to attribute "_wrapped_pdb_cls" for class "type[pytestPDB]*"
+ Type "tuple[Any | None, type[PytestPdbWrapper]]" is not assignable to type "tuple[type[Any], type[Any]] | None"
+ "tuple[Any | None, type[PytestPdbWrapper]]" is not assignable to "tuple[type[Any], type[Any]]"
+ Tuple entry 1 is incorrect type
+ Type "Any | None" is not assignable to type "type[Any]"
+ "None" is not assignable to "type[Any]"
+ "tuple[Any | None, type[PytestPdbWrapper]]" is not assignable to "None" (reportAttributeAccessIssue)
+ .../projects/pytest/src/_pytest/doctest.py:349:48 - error: Argument of type "Any | None" cannot be assigned to parameter "key" of type "str" in function "_get_report_choice"
+ Type "Any | None" is not assignable to type "str"
+ "None" is not assignable to "str" (reportArgumentType)
+ .../projects/pytest/src/_pytest/doctest.py:411:33 - error: Type "Any | None" is not assignable to declared type "bool"
+ Type "Any | None" is not assignable to type "bool"
+ "None" is not assignable to "bool" (reportAssignmentType)
+ .../projects/pytest/src/_pytest/nodes.py
+ .../projects/pytest/src/_pytest/nodes.py:451:24 - error: Argument of type "Any | None" cannot be assigned to parameter "showlocals" of type "bool" in function "getrepr"
+ Type "Any | None" is not assignable to type "bool"
+ "None" is not assignable to "bool" (reportArgumentType)
+ .../projects/pytest/src/_pytest/python.py:509:18 - error: Argument of type "Any | None" cannot be assigned to parameter "mode" of type "str | ImportMode" in function "import_path"
+ Type "Any | None" is not assignable to type "str | ImportMode"
+ Type "None" is not assignable to type "str | ImportMode"
+ "None" is not assignable to "str"
+ "None" is not assignable to "ImportMode" (reportArgumentType)
+ .../projects/pytest/src/_pytest/runner.py
+ .../projects/pytest/src/_pytest/runner.py:394:17 - error: Argument of type "Any | None" cannot be assigned to parameter "importmode" of type "str | ImportMode" in function "_loadconftestmodules"
+ Type "Any | None" is not assignable to type "str | ImportMode"
+ Type "None" is not assignable to type "str | ImportMode"
+ "None" is not assignable to "str"
+ "None" is not assignable to "ImportMode" (reportArgumentType)
+ .../projects/pytest/src/_pytest/stepwise.py
+ .../projects/pytest/src/_pytest/stepwise.py:106:27 - error: Cannot assign to attribute "skip" for class "StepwisePlugin*"
+ Type "Any | None" is not assignable to type "bool"
+ "None" is not assignable to "bool" (reportAttributeAccessIssue)
+ .../projects/pytest/src/_pytest/stepwise.py:107:28 - error: Cannot assign to attribute "reset" for class "StepwisePlugin*"
+ Type "Any | None" is not assignable to type "bool"
+ "None" is not assignable to "bool" (reportAttributeAccessIssue)
- 331 errors, 17 warnings, 0 informations
+ 339 errors, 17 warnings, 0 informations
stone (https://github.com/dropbox/stone)
+ .../projects/stone/stone/backends/python_client.py:197:40 - error: "get" is not a known attribute of "None" (reportOptionalMemberAccess)
- 1603 errors, 5 warnings, 0 informations
+ 1604 errors, 5 warnings, 0 informations
scikit-learn (https://github.com/scikit-learn/scikit-learn)
+ .../projects/scikit-learn/sklearn/calibration.py:376:56 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+ .../projects/scikit-learn/sklearn/cross_decomposition/_pls.py:1040:16 - error: "T" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/scikit-learn/sklearn/cross_decomposition/_pls.py:1044:48 - error: "shape" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/scikit-learn/sklearn/cross_decomposition/_pls.py:1069:31 - error: Argument of type "Unknown | None" cannot be assigned to parameter "b" of type "ArrayLike" in function "dot"
+ Type "Unknown | None" is not assignable to type "ArrayLike"
+ Type "None" is not assignable to type "ArrayLike"
+ "None" is incompatible with protocol "_Buffer"
+ "__buffer__" is not present
+ "None" is incompatible with protocol "_SupportsArray[dtype[Any]]"
+ "__array__" is not present
+ "None" is incompatible with protocol "_NestedSequence[_SupportsArray[dtype[Any]]]"
+ "__len__" is not present
+ ... (reportArgumentType)
+ .../projects/scikit-learn/sklearn/decomposition/_dict_learning.py:584:16 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+ .../projects/scikit-learn/sklearn/decomposition/_dict_learning.py:587:42 - error: Argument of type "NDArray[Unknown] | Unknown | None" cannot be assigned to parameter "obj" of type "Sized" in function "len"
+ Type "NDArray[Unknown] | Unknown | None" is not assignable to type "Sized"
+ "None" is incompatible with protocol "Sized"
+ "__len__" is not present (reportArgumentType)
+ .../projects/scikit-learn/sklearn/decomposition/_kernel_pca.py:378:30 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+ .../projects/scikit-learn/sklearn/decomposition/_kernel_pca.py:510:39 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+ .../projects/scikit-learn/sklearn/decomposition/_pca.py:683:39 - error: Object of type "None" is not subscriptable (reportOptionalSubscript)
+ .../projects/scikit-learn/sklearn/decomposition/_sparse_pca.py:332:33 - error: "T" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/scikit-learn/sklearn/decomposition/_truncated_svd.py:262:65 - error: "T" is not a known attribute of "None" (reportOptionalMemberAccess)
- .../projects/scikit-learn/sklearn/decomposition/_truncated_svd.py:264:29 - error: Operator "*" not supported for types "Any | Unknown | Unbound" and "ndarray[_AnyShape, dtype[float32 | float64]] | Any | Unknown | Unbound"
+ .../projects/scikit-learn/sklearn/decomposition/_truncated_svd.py:264:29 - error: Operator "*" not supported for types "Any | Unknown | Unbound | None" and "ndarray[_AnyShape, dtype[float32 | float64]] | Any | Unknown | Unbound"
+ Operator "*" not supported for types "None" and "ndarray[_AnyShape, dtype[float32 | float64]]"
+ Operator "*" not supported for types "None" and "Unbound"
+ .../projects/scikit-learn/sklearn/decomposition/_truncated_svd.py:293:52 - error: "T" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/scikit-learn/sklearn/decomposition/_truncated_svd.py:311:26 - error: Argument of type "Any | Unknown | None" cannot be assigned to parameter "b" of type "ArrayLike" in function "dot"
+ Type "Any | Unknown | None" is not assignable to type "ArrayLike"
+ Type "None" is not assignable to type "ArrayLike"
+ "None" is incompatible with protocol "_Buffer"
+ "__buffer__" is not present
+ "None" is incompatible with protocol "_SupportsArray[dtype[Any]]"
+ "__array__" is not present
+ "None" is incompatible with protocol "_NestedSequence[_SupportsArray[dtype[Any]]]"
+ "__len__" is not present
+ ... (reportArgumentType)
+ .../projects/scikit-learn/sklearn/decomposition/_truncated_svd.py:322:33 - error: "shape" is not a known attribute of "None" (reportOptionalMemberAccess)
+ .../projects/scikit-learn/sklearn/decomposition/tests/test_incremental_pca.py:254:21 - error: Argument of type "Unknown | Any | None" cannot be assigned to parameter "actual" of type "_NumericArrayLike" in function "assert_allclose"
+ Type "Unknown | Any | None" is not assignable to type "_NumericArrayLike"
+ Type "None" is not assignable to type "_NumericArrayLike"
+ "None" is incompatible with protocol "_SupportsArray[dtype[numpy.bool[builtins.bool] | number[Any, int | float | complex]]]"
+ "__array__" is not present
+ "None" is incompatible with protocol "_NestedSequence[_SupportsArray[dtype[numpy.bool[builtins.bool] | number[Any, int | float | complex]]]]"
+ "__len__" is not present
+ "__getitem__" is not present
+ "__contains__" is not present
... (truncated 540 lines) ...``` |
rchiodo
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Apr 8, 2026
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Any or Unknown will get narrowed to None after an "is None" check.
Fixes #10603