Add support for checking code snippets

[darricklaidin]

This PR aims to resolve #503. It adds support for checking Python code snippets directly from the command line using the --command flag, equivalent to mypy -c. This enables quick type checking of code without creating temporary files.

The implementation creates a virtual module system where snippets are treated as files stored in memory. This allows reuse of the entire existing type checking pipeline while maintaining clean separation between file-based and snippet-based workflows. The virtual module approach also ensures snippets integrate seamlessly with import resolution and configuration systems.

Core Implementation

• CLI Interface: Added --command <CODE> flag to accept Python code strings
• Module System: Extended ModulePathDetails with CommandSnippet variant for virtual modules
• Memory Storage: Implemented in-memory code storage using <string> as virtual file path
• Type Checking: Reused existing run_inner() infrastructure for consistent behavior

Key Files Modified

• pyrefly/bin/main.rs: Added command-line argument parsing and run_command_check()
• pyrefly/lib/module/module_path.rs: Added CommandSnippet variant and display logic
• pyrefly/lib/commands/check.rs: Added run_once_with_snippet() method
• pyrefly/lib/state/load.rs: Added memory lookup for snippet code loading

Usage Examples

pyrefly check --command "x: int = 'hello'"
pyrefly check --command "import requests; r = requests.get('url')"
pyrefly check --command "def foo(): pass" --config strict.toml
pyrefly check --command "bad_code" --output-format json

Tests have been added to test/command_snippet.md.

[darricklaidin]

I have stuck with --command as the flag name for now. Happy to change this if/when we finalize on something.

[github-actions]

Diff from mypy_primer, showing the effect of this PR on open source code:

meson (https://github.com/mesonbuild/meson)
- ERROR .../projects/meson/mesonbuild/interpreter/interpreter.py:3490:79-83: Argument `list[BothLibraries | BuildTarget | CustomTarget | CustomTargetIndex | ExtractedObjects | File | GeneratedList | str]` is not assignable to parameter `sources` with type `list[BuildTarget | CustomTarget | CustomTargetIndex | ExtractedObjects | File | GeneratedList | StructuredSources]` in function `mesonbuild.build.Executable.__init__` [bad-argument-type]

openlibrary (https://github.com/internetarchive/openlibrary)
- ERROR .../projects/openlibrary/openlibrary/plugins/openlibrary/lists.py:833:43-835:18: Cannot set item in `dict[str, list[dict[Unknown, Unknown]]]` [bad-argument-type]
- ERROR .../projects/openlibrary/openlibrary/plugins/openlibrary/lists.py:840:40-88: Cannot set item in `dict[str, list[dict[Unknown, Unknown]]]` [bad-argument-type]
- ERROR .../projects/openlibrary/openlibrary/plugins/openlibrary/lists.py:845:42-847:18: Cannot set item in `dict[str, list[dict[Unknown, Unknown]]]` [bad-argument-type]

ignite (https://github.com/pytorch/ignite)
- ERROR .../projects/ignite/ignite/metrics/precision.py:91:9-14: Class member `_BasePrecisionRecall.reset` overrides parent class `_BaseClassification` in an inconsistent manner [bad-override]

CPython (Argument Clinic) (https://github.com/python/cpython)
+ ERROR /tmp/mypy_primer/projects/CPython (Argument Clinic)/Lib/idlelib/idle_test/test_browser.py:25:40-48: Instance-only attribute `root` of class `ModuleBrowserTest` is not visible on the class [missing-attribute]

sympy (https://github.com/sympy/sympy)
- ERROR .../projects/sympy/sympy/core/exprtools.py:749:21-36: Cannot set item in `Unknown | None` [missing-attribute]
- ERROR .../projects/sympy/sympy/core/exprtools.py:751:21-36: Cannot set item in `Unknown | None` [missing-attribute]
+ ERROR .../projects/sympy/sympy/integrals/prde.py:346:33-34: Type `Sized` is not iterable [not-iterable]
- ERROR .../projects/sympy/sympy/integrals/prde.py:386:37-38: Type `Sized` is not iterable [not-iterable]
+ ERROR .../projects/sympy/sympy/integrals/prde.py:418:18-24: Cannot unpack tuple[Unknown, ...] | tuple[Unknown, Unknown, Unknown] | Unknown (of size 3) into 2 values [bad-unpacking]
+ ERROR .../projects/sympy/sympy/ntheory/multinomial.py:160:30-39: No matching overload found for function `filter.__new__` [no-matching-overload]
+ ERROR .../projects/sympy/sympy/ntheory/residue_ntheory.py:1488:15-22: `-` is not supported between `SupportsIndex` and `Literal[1]` [bad-argument-type]
+ ERROR .../projects/sympy/sympy/physics/vector/fieldfunctions.py:312:9-29: Cannot set item in `Mapping[Basic | complex, Expr | complex]` [missing-attribute]
- ERROR .../projects/sympy/sympy/physics/vector/functions.py:107:24-33: Object of class `NoneType` has no attribute `dcm` [missing-attribute]
+ ERROR .../projects/sympy/sympy/polys/matrices/sdm.py:1977:9-2018:43: `Mapping[Unknown, Unknown] | dict[Unknown, Unknown]` is not assignable to `dict[Unknown, Unknown]` (caused by inconsistent types when breaking cycles) [bad-assignment]
+ ERROR .../projects/sympy/sympy/polys/matrices/sdm.py:2023:13-36: Cannot set item in `dict[Unknown, Unknown]` [missing-attribute]
+ ERROR .../projects/sympy/sympy/polys/matrices/sdm.py:2025:13-34: Cannot set item in `Mapping[Unknown, Unknown] | dict[Unknown, Unknown]` [missing-attribute]
- ERROR .../projects/sympy/sympy/solvers/solvers.py:1724:42-48: Argument `list[dict[Unknown, Basic | ComplexInfinity | Integer | NaN | Zero | float | Unknown | Unknown]] | list[dict[Unknown, Expr | list[Unknown] | tuple[Unknown, int] | Unknown]] | list[dict[Unknown, Unknown]] | Unknown` is not assignable to parameter `solutions` with type `list[dict[Expr, Expr]]` in function `_remove_duplicate_solutions` [bad-argument-type]
+ ERROR .../projects/sympy/sympy/solvers/solvers.py:1724:42-48: Argument `list[dict[Unknown, Basic | Integer | Zero | float | Unknown | Unknown]] | list[dict[Unknown, Expr | list[Unknown] | tuple[Unknown, int] | Unknown]] | list[dict[Unknown, Unknown]] | Unknown` is not assignable to parameter `solutions` with type `list[dict[Expr, Expr]]` in function `_remove_duplicate_solutions` [bad-argument-type]
- ERROR .../projects/sympy/sympy/solvers/solvers.py:2741:43-46: Argument `Basic | ComplexInfinity | Integer | NaN | Zero | float | Unknown | Unknown` is not assignable to parameter `x` with type `SupportsAbs[@_]` in function `abs` [bad-argument-type]
+ ERROR .../projects/sympy/sympy/solvers/solvers.py:2741:43-46: Argument `Basic | Integer | Zero | float | Unknown | Unknown` is not assignable to parameter `x` with type `SupportsAbs[@_]` in function `abs` [bad-argument-type]
- ERROR .../projects/sympy/sympy/solvers/solvers.py:2768:55-60: Object of class `ComplexInfinity` has no attribute `p` [missing-attribute]
- ERROR .../projects/sympy/sympy/solvers/solvers.py:2768:55-60: Object of class `NaN` has no attribute `p` [missing-attribute]
- ERROR .../projects/sympy/sympy/solvers/solvers.py:2769:44-49: Object of class `ComplexInfinity` has no attribute `p` [missing-attribute]
- ERROR .../projects/sympy/sympy/solvers/solvers.py:2769:44-49: Object of class `NaN` has no attribute `p` [missing-attribute]
- ERROR .../projects/sympy/sympy/solvers/solvers.py:2772:47-52: Object of class `ComplexInfinity` has no attribute `q` [missing-attribute]
- ERROR .../projects/sympy/sympy/solvers/solvers.py:2772:47-52: Object of class `NaN` has no attribute `q` [missing-attribute]
- ERROR .../projects/sympy/sympy/solvers/solvers.py:2773:39-44: Object of class `ComplexInfinity` has no attribute `q` [missing-attribute]
- ERROR .../projects/sympy/sympy/solvers/solvers.py:2773:39-44: Object of class `NaN` has no attribute `q` [missing-attribute]
- ERROR .../projects/sympy/sympy/solvers/solvers.py:3171:5-3295:18: `Basic | ComplexInfinity | NaN | Zero | float | Unknown | Unknown` is not assignable to `Zero` (caused by inconsistent types when breaking cycles) [bad-assignment]

pandas (https://github.com/pandas-dev/pandas)
+ ERROR .../projects/pandas/pandas/core/algorithms.py:874:18-33: Object of class `NoneType` has no attribute `value_counts` [missing-attribute]
+ ERROR .../projects/pandas/pandas/core/algorithms.py:885:32-34: Argument `Series | tuple[Series | Unknown | None, ExtensionArray | ndarray[tuple[Any, ...], dtype[Any]] | Unknown] | Unknown | None` is not assignable to parameter `obj` with type `Sized` in function `len` [bad-argument-type]
+ ERROR .../projects/pandas/pandas/core/arrays/sparse/accessor.py:271:13-31: Object of class `NoneType` has no attribute `array` [missing-attribute]
+ ERROR .../projects/pandas/pandas/core/arrays/sparse/accessor.py:272:19-37: Object of class `NoneType` has no attribute `index` [missing-attribute]
+ ERROR .../projects/pandas/pandas/core/arrays/sparse/accessor.py:273:18-35: Object of class `NoneType` has no attribute `name` [missing-attribute]
+ ERROR .../projects/pandas/pandas/core/computation/align.py:96:24-52: No matching overload found for function `dict.__init__` [no-matching-overload]
+ ERROR .../projects/pandas/pandas/core/indexes/accessors.py:372:23-55: Object of class `DatetimeIndex` has no attribute `to_pydatetime` [missing-attribute]
+ ERROR .../projects/pandas/pandas/core/indexes/accessors.py:372:23-55: Object of class `PeriodArray` has no attribute `to_pydatetime` [missing-attribute]
+ ERROR .../projects/pandas/pandas/core/indexes/accessors.py:372:23-55: Object of class `TimedeltaIndex` has no attribute `to_pydatetime` [missing-attribute]
+ ERROR .../projects/pandas/pandas/plotting/_matplotlib/boxplot.py:535:13-22: Cannot set item in `Unknown | None` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/apply/test_frame_apply.py:977:25-33: Object of class `tuple` has no attribute `number` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/apply/test_frame_apply.py:977:35-43: Object of class `tuple` has no attribute `string` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/arrays/boolean/test_function.py:21:32-39: Object of class `ExtensionArray` has no attribute `_data` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/arrays/boolean/test_function.py:21:41-48: Object of class `ExtensionArray` has no attribute `_data` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/arrays/boolean/test_function.py:64:32-39: Object of class `ExtensionArray` has no attribute `_data` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/extension/base/methods.py:576:26-44: Object of class `type` has no attribute `_from_sequence` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/extension/base/methods.py:586:13-31: Object of class `type` has no attribute `_from_sequence` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/extension/base/methods.py:606:30-48: Object of class `type` has no attribute `_from_sequence` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/extension/decimal/test_decimal.py:366:32-55: No matching overload found for function `numpy._typing._ufunc._UFunc_Nin2_Nout1.__call__` [no-matching-overload]
+ ERROR .../projects/pandas/pandas/tests/extension/test_sparse.py:309:25-43: Object of class `type` has no attribute `_from_sequence` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/extension/test_sparse.py:316:13-31: Object of class `type` has no attribute `_from_sequence` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/extension/test_sparse.py:323:30-48: Object of class `type` has no attribute `_from_sequence` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/frame/indexing/test_setitem.py:510:27-34: Object of class `NoneType` has no attribute `cat` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/frame/indexing/test_setitem.py:517:19-29: Object of class `NoneType` has no attribute `values` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/frame/indexing/test_setitem.py:518:28-38: Object of class `NoneType` has no attribute `values` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/frame/indexing/test_setitem.py:519:19-29: Object of class `NoneType` has no attribute `astype` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/frame/indexing/test_setitem.py:521:27-40: Object of class `NoneType` has no attribute `dtype` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/frame/indexing/test_setitem.py:522:27-38: Object of class `NoneType` has no attribute `cat` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/frame/indexing/test_setitem.py:909:15-25: Object of class `NoneType` has no attribute `values` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/frame/indexing/test_setitem.py:938:9-17: Object of class `NoneType` has no attribute `name` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/frame/indexing/test_setitem.py:939:32-50: Object of class `NoneType` has no attribute `sort_index` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/frame/indexing/test_setitem.py:939:54-68: Object of class `NoneType` has no attribute `sort_index` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/frame/methods/test_convert_dtypes.py:221:35-65: No matching overload found for function `pandas.core.tools.datetimes.to_datetime` [no-matching-overload]
+ ERROR .../projects/pandas/pandas/tests/frame/methods/test_info.py:58:42-60:10: No matching overload found for function `numpy.ndarray.take` [no-matching-overload]
+ ERROR .../projects/pandas/pandas/tests/frame/test_constructors.py:2410:16-41: Object of class `NoneType` has no attribute `value_counts` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/frame/test_constructors.py:2411:16-41: Object of class `NoneType` has no attribute `value_counts` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/generic/test_duplicate_labels.py:206:13-36: Unexpected keyword argument `allows_duplicate_labels` in function `pandas.core.series.Series.__init__` [unexpected-keyword]
+ ERROR .../projects/pandas/pandas/tests/groupby/methods/test_value_counts.py:1063:43-51: Argument `list[list[int]]` is not assignable to parameter `tuples` with type `Iterable[tuple[Hashable, ...]]` in function `pandas.core.indexes.multi.MultiIndex.from_tuples` [bad-argument-type]
+ ERROR .../projects/pandas/pandas/tests/groupby/test_categorical.py:197:34-42: Object of class `NoneType` has no attribute `values` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/groupby/test_categorical.py:197:63-71: Object of class `NoneType` has no attribute `values` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/groupby/test_categorical.py:451:5-16: Object of class `NoneType` has no attribute `name` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/groupby/test_categorical.py:460:24-37: Object of class `NoneType` has no attribute `values` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/indexing/multiindex/test_slice.py:696:52-81: Argument `list[Iterable[Hashable] | ndarray[tuple[int], dtype[signedinteger[Any]]]]` is not assignable to parameter `iterables` with type `Sequence[Iterable[Hashable]]` in function `pandas.core.indexes.multi.MultiIndex.from_product` [bad-argument-type]
+ ERROR .../projects/pandas/pandas/tests/interchange/test_impl.py:329:19-35: Unpacked keyword argument `int` is not assignable to parameter `tzinfo` with type `tzinfo | None` in function `datetime.datetime.__new__` [bad-argument-type]
+ ERROR .../projects/pandas/pandas/tests/io/excel/test_writers.py:816:27-57: Object of class `NoneType` has no attribute `astype` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/io/excel/test_writers.py:837:41-52: No matching overload found for function `list.__init__` [no-matching-overload]
+ ERROR .../projects/pandas/pandas/tests/resample/test_datetime_index.py:914:81-85: Argument `Literal[True]` is not assignable to parameter `ambiguous` with type `Literal['NaT', 'infer', 'raise'] | ndarray[tuple[Any, ...], dtype[numpy.bool[builtins.bool]]]` in function `pandas.core.indexes.datetimes.DatetimeIndex.__new__` [bad-argument-type]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:41:5-17: Type `None` is not iterable [not-iterable]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:53:5-17: Type `None` is not iterable [not-iterable]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:65:5-17: Type `None` is not iterable [not-iterable]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:78:33-52: Object of class `NoneType` has no attribute `categories` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:82:19-26: Object of class `NoneType` has no attribute `codes` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:82:44-56: Object of class `NoneType` has no attribute `categories` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:93:27-39: Object of class `NoneType` has no attribute `categories` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:95:37-49: Object of class `NoneType` has no attribute `categories` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:96:27-44: Object of class `NoneType` has no attribute `categories` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:97:33-45: Object of class `NoneType` has no attribute `codes` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:170:27-44: Object of class `NoneType` has no attribute `categories` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:237:5-17: Type `None` is not iterable [not-iterable]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:239:27-44: Object of class `NoneType` has no attribute `categories` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:247:12-23: Object of class `NoneType` has no attribute `name` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:255:27-44: Object of class `NoneType` has no attribute `categories` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:279:27-44: Object of class `NoneType` has no attribute `categories` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:281:12-21: Can't apply arguments to non-class, got None [bad-specialization]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:282:12-21: Can't apply arguments to non-class, got None [bad-specialization]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:283:12-25: Can't apply arguments to non-class, got None [bad-specialization]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:284:12-25: Can't apply arguments to non-class, got None [bad-specialization]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:371:5-17: Type `None` is not iterable [not-iterable]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:446:26-48: Argument `NaTType | Timestamp` is not assignable to parameter `left` with type `Timestamp` in function `pandas._libs.interval.Interval.__init__` [bad-argument-type]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:446:50-72: Argument `NaTType | Timestamp` is not assignable to parameter `right` with type `Timestamp` in function `pandas._libs.interval.Interval.__init__` [bad-argument-type]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:447:26-48: Argument `NaTType | Timestamp` is not assignable to parameter `left` with type `Timestamp` in function `pandas._libs.interval.Interval.__init__` [bad-argument-type]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:447:50-72: Argument `NaTType | Timestamp` is not assignable to parameter `right` with type `Timestamp` in function `pandas._libs.interval.Interval.__init__` [bad-argument-type]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:470:5-14: Type `None` is not iterable [not-iterable]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:573:12-29: Object of class `NoneType` has no attribute `categories` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:576:12-23: Object of class `NoneType` has no attribute `isna` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:584:5-24: Type `None` is not iterable [not-iterable]
- ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:609:27-38: Argument `ExtensionArray | ndarray[tuple[Any, ...], dtype[Any]] | Unknown` is not assignable to parameter `left` with type `Index` in function `pandas._testing.asserters.assert_index_equal` [bad-argument-type]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:609:27-38: Argument `ExtensionArray | ndarray[tuple[Any, ...], dtype[Any]] | Unknown | Unknown` is not assignable to parameter `left` with type `Index` in function `pandas._testing.asserters.assert_index_equal` [bad-argument-type]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:615:5-24: Type `None` is not iterable [not-iterable]
- ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:623:27-38: Argument `ExtensionArray | ndarray[tuple[Any, ...], dtype[Any]] | Unknown` is not assignable to parameter `left` with type `Index` in function `pandas._testing.asserters.assert_index_equal` [bad-argument-type]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:623:27-38: Argument `ExtensionArray | ndarray[tuple[Any, ...], dtype[Any]] | Unknown | Unknown` is not assignable to parameter `left` with type `Index` in function `pandas._testing.asserters.assert_index_equal` [bad-argument-type]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:741:12-37: Object of class `NoneType` has no attribute `value_counts` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:742:12-37: Object of class `NoneType` has no attribute `value_counts` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:783:33-45: Object of class `NoneType` has no attribute `array` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_cut.py:807:18-35: Object of class `NoneType` has no attribute `categories` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_get_dummies.py:726:64-73: Object of class `NoneType` has no attribute `string` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_get_dummies.py:735:74-83: Object of class `NoneType` has no attribute `string` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_qcut.py:34:5-14: Type `None` is not iterable [not-iterable]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_qcut.py:37:14-31: Object of class `NoneType` has no attribute `categories` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_qcut.py:40:14-31: Object of class `NoneType` has no attribute `categories` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_qcut.py:79:27-40: Object of class `NoneType` has no attribute `categories` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_qcut.py:87:17-28: Can't apply arguments to non-class, got None [bad-specialization]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_qcut.py:188:31-48: Object of class `NoneType` has no attribute `categories` [missing-attribute]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_qcut.py:244:21-70: Argument `NaTType | Timestamp` is not assignable to parameter `left` with type `Timestamp` in function `pandas._libs.interval.Interval.__init__` [bad-argument-type]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_qcut.py:245:21-60: Argument `NaTType | Timestamp` is not assignable to parameter `right` with type `Timestamp` in function `pandas._libs.interval.Interval.__init__` [bad-argument-type]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_qcut.py:248:21-60: Argument `NaTType | Timestamp` is not assignable to parameter `left` with type `Timestamp` in function `pandas._libs.interval.Interval.__init__` [bad-argument-type]
+ ERROR .../projects/pandas/pandas/tests/reshape/test_qcut.py:249:21-60: Argument `NaTType | Timestamp` is not assignable to parameter `right` with type `Timestamp` in function `pandas._libs.interval.Interval.__init__` [bad-argument-type]

... (truncated 35 lines) ...

scipy (https://github.com/scipy/scipy)
- ERROR .../projects/scipy/scipy/_lib/cobyqa/examples/powell1994.py:91:31-59: No matching overload found for function `numpy._core.shape_base.block` [no-matching-overload]
- ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:232:21-41: Cannot set item in `ndarray[tuple[Any, ...], dtype[int]] | ndarray[tuple[Any, ...], dtype[Unknown]]` [missing-attribute]
- ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:232:44-64: Can't apply arguments to non-class, got ndarray[tuple[Any, ...], dtype[int]] | ndarray[tuple[Any, ...], dtype[Unknown]] [bad-specialization]
- ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:266:17-39: Cannot set item in `ndarray[tuple[Any, ...], dtype[int]] | ndarray[tuple[Any, ...], dtype[Unknown]]` [missing-attribute]
+ ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:266:17-39: Cannot set item in `ndarray[tuple[Any, ...], dtype[int]] | ndarray[tuple[Any, ...], dtype[Unknown]]` [no-matching-overload]
- ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:266:42-64: Can't apply arguments to non-class, got ndarray[tuple[Any, ...], dtype[int]] | ndarray[tuple[Any, ...], dtype[Unknown]] [bad-specialization]
+ ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:266:17-39: Cannot set item in `ndarray[tuple[Any, ...], dtype[int]] | ndarray[tuple[Any, ...], dtype[Unknown]]` [no-matching-overload]
+ ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:266:42-64: Cannot index into `ndarray[tuple[Any, ...], dtype[int]]` [no-matching-overload]
+ ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:266:42-64: Cannot index into `ndarray[tuple[Any, ...], dtype[Unknown]]` [no-matching-overload]
- ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:305:13-28: Cannot set item in `ndarray[tuple[Any, ...], dtype[int]] | ndarray[tuple[Any, ...], dtype[Unknown]]` [missing-attribute]
+ ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:305:32-50: Expected an iterable, got `ndarray[tuple[Any, ...], dtype[int]] | ndarray[tuple[Any, ...], dtype[Unknown]]` [not-iterable]
- ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:305:33-50: Can't apply arguments to non-class, got ndarray[tuple[Any, ...], dtype[int]] | ndarray[tuple[Any, ...], dtype[Unknown]] [bad-specialization]
- ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:305:52-62: Can't apply arguments to non-class, got ndarray[tuple[Any, ...], dtype[int]] | ndarray[tuple[Any, ...], dtype[Unknown]] [bad-specialization]
+ ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:381:55-72: Cannot index into `Buffer` [missing-attribute]
+ ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:381:55-72: Cannot index into `_SupportsArray[dtype[Any]]` [missing-attribute]
+ ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:381:55-72: Cannot index into `bytes` [no-matching-overload]
+ ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:381:55-72: Cannot index into `complex` [missing-attribute]
+ ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:381:55-72: Cannot index into `str` [no-matching-overload]
+ ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:381:57-71: Cannot index into `_NestedSequence[bytes | complex | str]` [bad-argument-type]
+ ERROR .../projects/scipy/scipy/_lib/pyprima/pyprima/src/pyprima/cobyla/trustregion.py:381:57-71: Cannot index into `_NestedSequence[_SupportsArray[dtype[Any]]]` [bad-argument-type]
+ ERROR .../projects/scipy/scipy/optimize/_lsq/dogbox.py:202:18-24: TODO: Expr::attr_infer_for_type attribute base undefined for type: @_ (trying to access copy) [missing-attribute]
+ ERROR .../projects/scipy/scipy/sparse/linalg/_expm_multiply.py:550:9-556:35: `int | None` is not assignable to `int` (caused by inconsistent types when breaking cycles) [bad-assignment]
- ERROR .../projects/scipy/scipy/sparse/linalg/_expm_multiply.py:554:50-65: `*` is not supported between `int` and `None` [bad-argument-type]
- ERROR .../projects/scipy/scipy/sparse/linalg/_isolve/iterative.py:761:13-764:33: `int | matrix[tuple[int, int], dtype[Any]] | ndarray[tuple[int, int], dtype[Any]] | ndarray[tuple[int, int], dtype[Unknown]] | ndarray[tuple[int, int], [_2DShapeT_co, _DTypeT_co](self: matrix[_2DShapeT_co, _DTypeT_co]) -> _DTypeT_co] | ndarray[tuple[Any, ...], dtype[Unknown]] | ndarray[tuple[Any, ...], [_2DShapeT_co, _DTypeT_co](self: matrix[_2DShapeT_co, _DTypeT_co]) -> _DTypeT_co] | Unknown` is not assignable to `_NestedSequence[_SupportsArray[dtype[numpy.bool[builtins.bool]]]] | _NestedSequence[builtins.bool] | _SupportsArray[dtype[numpy.bool[builtins.bool]]] | builtins.bool` (caused by inconsistent types when breaking cycles) [bad-assignment]
- ERROR .../projects/scipy/scipy/sparse/linalg/_isolve/iterative.py:762:30-42: No matching overload found for function `numpy._core.multiarray.dot` [no-matching-overload]
- ERROR .../projects/scipy/scipy/sparse/linalg/_isolve/iterative.py:766:32-35: No matching overload found for function `numpy.linalg._linalg.norm` [no-matching-overload]
- ERROR .../projects/scipy/scipy/sparse/linalg/_isolve/iterative.py:768:29-33: Cannot index into `int` [missing-attribute]
+ ERROR .../projects/scipy/scipy/sparse/linalg/_isolve/iterative.py:768:29-33: Cannot index into `complex` [missing-attribute]
+ ERROR .../projects/scipy/scipy/stats/_binned_statistic.py:752:24-31: Can't apply arguments to non-class, got None [bad-specialization]
+ ERROR .../projects/scipy/scipy/stats/_binned_statistic.py:753:23-30: Can't apply arguments to non-class, got None [bad-specialization]
+ ERROR .../projects/scipy/scipy/stats/_binned_statistic.py:757:35-42: Can't apply arguments to non-class, got None [bad-specialization]

CPython (cases_generator) (https://github.com/python/cpython)
+ ERROR /tmp/mypy_primer/projects/CPython (cases_generator)/Lib/asyncio/base_subprocess.py:18:26-31: Argument `Unknown | None` is not assignable to parameter `extra` with type `dict[Unknown, Unknown]` in function `Lib.asyncio.transports.BaseTransport.__init__` [bad-argument-type]
+ ERROR /tmp/mypy_primer/projects/CPython (cases_generator)/Lib/asyncio/transports.py:273:26-31: Argument `Unknown | None` is not assignable to parameter `extra` with type `dict[Unknown, Unknown]` in function `BaseTransport.__init__` [bad-argument-type]
+ ERROR /tmp/mypy_primer/projects/CPython (cases_generator)/Lib/asyncio/unix_events.py:490:26-31: Argument `Unknown | None` is not assignable to parameter `extra` with type `dict[Unknown, Unknown]` in function `Lib.asyncio.transports.BaseTransport.__init__` [bad-argument-type]
- ERROR /tmp/mypy_primer/projects/CPython (cases_generator)/Lib/idlelib/grep.py:90:9-13: Class member `GrepDialog.open` overrides parent class `SearchDialogBase` in an inconsistent manner [bad-override]
- ERROR /tmp/mypy_primer/projects/CPython (cases_generator)/Lib/idlelib/idle_test/test_browser.py:25:40-48: Instance-only attribute `root` of class `ModuleBrowserTest` is not visible on the class [missing-attribute]
+ ERROR /tmp/mypy_primer/projects/CPython (cases_generator)/Lib/unittest/signals.py:43:24-25: Cannot set item in `WeakKeyDictionary[Unknown, None]` [bad-argument-type]

CPython (peg_generator) (https://github.com/python/cpython)
- ERROR /tmp/mypy_primer/projects/CPython (peg_generator)/Lib/asyncio/base_subprocess.py:18:26-31: Argument `Unknown | None` is not assignable to parameter `extra` with type `dict[Unknown, Unknown]` in function `Lib.asyncio.transports.BaseTransport.__init__` [bad-argument-type]
- ERROR /tmp/mypy_primer/projects/CPython (peg_generator)/Lib/asyncio/transports.py:273:26-31: Argument `Unknown | None` is not assignable to parameter `extra` with type `dict[Unknown, Unknown]` in function `BaseTransport.__init__` [bad-argument-type]
- ERROR /tmp/mypy_primer/projects/CPython (peg_generator)/Lib/asyncio/unix_events.py:490:26-31: Argument `Unknown | None` is not assignable to parameter `extra` with type `dict[Unknown, Unknown]` in function `Lib.asyncio.transports.BaseTransport.__init__` [bad-argument-type]
+ ERROR /tmp/mypy_primer/projects/CPython (peg_generator)/Lib/idlelib/idle_test/test_browser.py:25:40-48: Instance-only attribute `root` of class `ModuleBrowserTest` is not visible on the class [missing-attribute]
- ERROR /tmp/mypy_primer/projects/CPython (peg_generator)/Lib/multiprocessing/context.py:223:9-15: Class member `Process._Popen` overrides parent class `BaseProcess` in an inconsistent manner [bad-override]
+ ERROR /tmp/mypy_primer/projects/CPython (peg_generator)/Lib/multiprocessing/context.py:251:32-56: `DefaultContext | ForkContext | ForkServerContext | SpawnContext | Unknown` is not assignable to attribute `_actual_context` with type `None` [bad-assignment]
- ERROR /tmp/mypy_primer/projects/CPython (peg_generator)/Lib/unittest/signals.py:43:24-25: Cannot set item in `WeakKeyDictionary[Unknown, None]` [bad-argument-type]

apprise (https://github.com/caronc/apprise)
- ERROR .../projects/apprise/apprise/plugins/burstsms.py:308:26-30: Argument `tuple[Unknown | None, Unknown | None]` is not assignable to parameter `auth` with type `((PreparedRequest) -> PreparedRequest) | AuthBase | tuple[str, str] | None` in function `requests.api.post` [bad-argument-type]
+ ERROR .../projects/apprise/apprise/plugins/burstsms.py:308:26-30: Argument `tuple[str | Unknown | None, str | Unknown | None]` is not assignable to parameter `auth` with type `((PreparedRequest) -> PreparedRequest) | AuthBase | tuple[str, str] | None` in function `requests.api.post` [bad-argument-type]
+ ERROR .../projects/apprise/apprise/plugins/dingtalk.py:147:27-148:66: `str | Unknown | None` is not assignable to attribute `secret` with type `None` [bad-assignment]
+ ERROR .../projects/apprise/apprise/plugins/fcm/__init__.py:255:28-51: `str | Unknown | None` is not assignable to attribute `project` with type `None` [bad-assignment]
+ ERROR .../projects/apprise/apprise/plugins/fcm/__init__.py:277:27-49: `str | Unknown | None` is not assignable to attribute `apikey` with type `None` [bad-assignment]
+ ERROR .../projects/apprise/apprise/plugins/home_assistant.py:140:24-141:58: `str | Unknown | None` is not assignable to attribute `nid` with type `None` [bad-assignment]
- ERROR .../projects/apprise/apprise/plugins/kumulos.py:167:22-26: Argument `tuple[Unknown | None, Unknown | None]` is not assignable to parameter `auth` with type `((PreparedRequest) -> PreparedRequest) | AuthBase | tuple[str, str] | None` in function `requests.api.post` [bad-argument-type]
+ ERROR .../projects/apprise/apprise/plugins/kumulos.py:167:22-26: Argument `tuple[str | Unknown | None, str | Unknown | None]` is not assignable to parameter `auth` with type `((PreparedRequest) -> PreparedRequest) | AuthBase | tuple[str, str] | None` in function `requests.api.post` [bad-argument-type]
+ ERROR .../projects/apprise/apprise/plugins/lametric.py:500:46-502:61: `str | Unknown | None` is not assignable to attribute `lametric_app_access_token` with type `None` [bad-assignment]
+ ERROR .../projects/apprise/apprise/plugins/lametric.py:511:41-512:72: `str | Unknown | None` is not assignable to attribute `lametric_app_ver` with type `None` [bad-assignment]
+ ERROR .../projects/apprise/apprise/plugins/lametric.py:530:36-58: `str | Unknown | None` is not assignable to attribute `lametric_apikey` with type `None` [bad-assignment]
- ERROR .../projects/apprise/apprise/plugins/mailgun.py:524:26-46: Argument `tuple[Literal['api'], Unknown | None]` is not assignable to parameter `auth` with type `((PreparedRequest) -> PreparedRequest) | AuthBase | tuple[str, str] | None` in function `requests.api.post` [bad-argument-type]
+ ERROR .../projects/apprise/apprise/plugins/mailgun.py:524:26-46: Argument `tuple[Literal['api'], str | Unknown | None]` is not assignable to parameter `auth` with type `((PreparedRequest) -> PreparedRequest) | AuthBase | tuple[str, str] | None` in function `requests.api.post` [bad-argument-type]
+ ERROR .../projects/apprise/apprise/plugins/matrix.py:359:33-360:55: `str | Unknown | None` is not assignable to attribute `access_token` with type `None` [bad-assignment]
+ ERROR .../projects/apprise/apprise/plugins/notifiarr.py:321:17-43: Cannot index into `str` [no-matching-overload]
- ERROR .../projects/apprise/apprise/plugins/notifiarr.py:322:17-45: Cannot set item in `NotifyType | dict[str, bool | str] | dict[str, dict[str, int | Unknown] | dict[str, str | Unknown] | dict[str, Unknown]] | Unknown | Unknown` [missing-attribute]
+ ERROR .../projects/apprise/apprise/plugins/notifiarr.py:322:17-45: Cannot set item in `NotifyType | dict[str, bool | str] | dict[str, dict[str, int | Unknown] | dict[str, str | Unknown] | dict[str, Unknown]] | str | Unknown | Unknown` [missing-attribute]
+ ERROR .../projects/apprise/apprise/plugins/notifiarr.py:322:17-45: Cannot set item in `NotifyType | dict[str, bool | str] | dict[str, dict[str, int | Unknown] | dict[str, str | Unknown] | dict[str, Unknown]] | str | Unknown | Unknown` [missing-attribute]
- ERROR .../projects/apprise/apprise/plugins/notifiarr.py:322:48-324:18: Cannot set item in `NotifyType | dict[str, bool | str] | dict[str, dict[str, int | Unknown] | dict[str, str | Unknown] | dict[str, Unknown]] | Unknown | Unknown` [bad-argument-type]
+ ERROR .../projects/apprise/apprise/plugins/notifiarr.py:322:48-324:18: Cannot set item in `NotifyType | dict[str, bool | str] | dict[str, dict[str, int | Unknown] | dict[str, str | Unknown] | dict[str, Unknown]] | str | Unknown | Unknown` [bad-argument-type]
- ERROR .../projects/apprise/apprise/plugins/one_signal.py:417:35-52: Argument `bool | dict[LazyTranslation | bool | str | Unknown, Unknown] | Unknown | None` is not assignable to parameter `obj` with type `Sized` in function `len` [bad-argument-type]
+ ERROR .../projects/apprise/apprise/plugins/one_signal.py:417:35-52: Argument `bool | dict[LazyTranslation | bool | str | Unknown, Unknown] | str | Unknown | None` is not assignable to parameter `obj` with type `Sized` in function `len` [bad-argument-type]
- ERROR .../projects/apprise/apprise/plugins/pagerduty.py:232:27-49: `Unknown | None` is not assignable to attribute `source` with type `LazyTranslation | bool | str` [bad-assignment]
+ ERROR .../projects/apprise/apprise/plugins/pagerduty.py:232:27-49: `str | Unknown | None` is not assignable to attribute `source` with type `LazyTranslation | bool | str` [bad-assignment]
- ERROR .../projects/apprise/apprise/plugins/pagerduty.py:244:30-55: `Unknown | None` is not assignable to attribute `component` with type `LazyTranslation | bool | str` [bad-assignment]
+ ERROR .../projects/apprise/apprise/plugins/pagerduty.py:244:30-55: `str | Unknown | None` is not assignable to attribute `component` with type `LazyTranslation | bool | str` [bad-assignment]
+ ERROR .../projects/apprise/apprise/plugins/pagertree.py:176:31-57: `str | Unknown | None` is not assignable to attribute `thirdparty` with type `None` [bad-assignment]
- ERROR .../projects/apprise/apprise/plugins/plivo.py:248:26-30: Argument `tuple[Unknown | None, Unknown | None]` is not assignable to parameter `auth` with type `((PreparedRequest) -> PreparedRequest) | AuthBase | tuple[str, str] | None` in function `requests.api.post` [bad-argument-type]
+ ERROR .../projects/apprise/apprise/plugins/plivo.py:248:26-30: Argument `tuple[str | Unknown | None, str | Unknown | None]` is not assignable to parameter `auth` with type `((PreparedRequest) -> PreparedRequest) | AuthBase | tuple[str, str] | None` in function `requests.api.post` [bad-argument-type]
- ERROR .../projects/apprise/apprise/plugins/popcorn_notify.py:191:26-30: Argument `tuple[Unknown | None, None]` is not assignable to parameter `auth` with type `((PreparedRequest) -> PreparedRequest) | AuthBase | tuple[str, str] | None` in function `requests.api.post` [bad-argument-type]
+ ERROR .../projects/apprise/apprise/plugins/popcorn_notify.py:191:26-30: Argument `tuple[str | Unknown | None, None]` is not assignable to parameter `auth` with type `((PreparedRequest) -> PreparedRequest) | AuthBase | tuple[str, str] | None` in function `requests.api.post` [bad-argument-type]
- ERROR .../projects/apprise/apprise/plugins/pushover.py:499:22-26: Argument `tuple[Unknown | None, Literal['']]` is not assignable to parameter `auth` with type `((PreparedRequest) -> PreparedRequest) | AuthBase | tuple[str, str] | None` in function `requests.api.post` [bad-argument-type]
+ ERROR .../projects/apprise/apprise/plugins/pushover.py:499:22-26: Argument `tuple[str | Unknown | None, Literal['']]` is not assignable to parameter `auth` with type `((PreparedRequest) -> PreparedRequest) | AuthBase | tuple[str, str] | None` in function `requests.api.post` [bad-argument-type]
+ ERROR .../projects/apprise/apprise/plugins/slack.py:355:33-356:78: `str | Unknown | None` is not assignable to attribute `access_token` with type `None` [bad-assignment]
- ERROR .../projects/apprise/apprise/plugins/twilio.py:351:26-30: Argument `tuple[Unknown | None, Unknown | None]` is not assignable to parameter `auth` with type `((PreparedRequest) -> PreparedRequest) | AuthBase | tuple[str, str] | None` in function `requests.api.post` [bad-argument-type]
+ ERROR .../projects/apprise/apprise/plugins/twilio.py:351:26-30: Argument `tuple[str | Unknown | None, str | Unknown | None]` is not assignable to parameter `auth` with type `((PreparedRequest) -> PreparedRequest) | AuthBase | tuple[str, str] | None` in function `requests.api.post` [bad-argument-type]
- ERROR .../projects/apprise/apprise/plugins/zulip.py:296:26-30: Argument `tuple[str, Unknown | None]` is not assignable to parameter `auth` with type `((PreparedRequest) -> PreparedRequest) | AuthBase | tuple[str, str] | None` in function `requests.api.post` [bad-argument-type]
+ ERROR .../projects/apprise/apprise/plugins/zulip.py:296:26-30: Argument `tuple[str, str | Unknown | None]` is not assignable to parameter `auth` with type `((PreparedRequest) -> PreparedRequest) | AuthBase | tuple[str, str] | None` in function `requests.api.post` [bad-argument-type]
+ ERROR .../projects/apprise/apprise/utils/parse.py:1134:50-57: No matching overload found for function `re.Pattern.match` [no-matching-overload]

steam.py (https://github.com/Gobot1234/steam.py)
+ ERROR .../projects/steam.py/steam/clan.py:60:26-31: Expected 0 positional arguments, got 4 in function `object.__init__` [bad-argument-type]
+ ERROR .../projects/steam.py/steam/clan.py:564:15-28: Class member `Clan.fetch_members` overrides parent class `PartialClan` in an inconsistent manner [bad-override]
+ ERROR .../projects/steam.py/steam/message.py:100:59-85: Expected default `ClanMember | PartialMember` of `ClanMessageAuthorT` to be assignable to the upper bound of `PartialMember` [invalid-type-var]
+ ERROR .../projects/steam.py/steam/state.py:1438:25-31: Argument `ClanMember | GroupMember | PartialMember` is not assignable to parameter `author` with type `ClientUser | PartialUser | User` in function `steam.invite.ClanInvite.__init__` [bad-argument-type]
+ ERROR .../projects/steam.py/steam/state.py:1446:25-31: Argument `ClanMember | GroupMember | PartialMember` is not assignable to parameter `author` with type `ClientUser | PartialUser | User` in function `steam.invite.GroupInvite.__init__` [bad-argument-type]