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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Type System Test Results</title>
<style>
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<body>
<div class="content_container">
<header>
<h3>Python Type System Conformance Test Results</h3>
<p class="disclaimer">
While spec conformance is important for the ecosystem, we don't recommend using it
as the primary basis for choosing a type checker. It is not representative
of many of the things users typically care about.
</p>
</header>
<div class="table_container"><table><tbody>
<tr><th class="col1"> </th>
<th class='tc-header'><div class='tc-name'>mypy 2.1.0</div>
</th>
<th class='tc-header'><div class='tc-name'>pyright 1.1.410</div>
</th>
<th class='tc-header'><div class='tc-name'>zuban 0.8.2</div>
</th>
<th class='tc-header'><div class='tc-name'>pyrefly 1.1.0</div>
</th>
<th class='tc-header'><div class='tc-name'>pycroscope 0.4.0</div>
</th>
<th class='tc-header'><div class='tc-name'>ty 0.0.50</div>
</th>
</tr>
<tr><th class="column" colspan="7">
<a class="test_group" href="https://typing.readthedocs.io/en/latest/spec/annotations.html">Type annotations</a>
</th></tr>
<tr><th class="column col1"> annotations_coroutines</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> annotations_forward_refs</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not report error for a forward reference that is not enclosed in quotes.</p><p>Does not report error for use of quoted type with "|" operator (runtime error).</p><p>Incorrectly generates error for quoted type defined in class scope.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Incorrectly generates error for quoted type defined in class scope.</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Types in quotes incorrectly refer to shadowing class member.</p><p>Does not reject some type forms that require quotes.</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Fails to reject "x" | int annotations that fail at runtime.</p><p>Rejects some valid quoted annotations.</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Resolves references in type annotations as referring to end-of-scope types (https://discuss.python.org/t/annotation-string-references-in-class-scope-in-conformance-tests/105439, https://github.com/python/typing/pull/2144)</p></span></div></th>
</tr>
<tr><th class="column col1"> annotations_generators</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not report incompatible Generator type in `yield from` statement.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> annotations_methods</th>
<th class="column col2 conformant"><div class="hover-text">Pass*<span class="tooltip-text" id="bottom"><p>Type evaluation differs from other type checkers because of ambiguity in the spec related to method bindings.</p></span></div></th>
<th class="column col2 conformant"><div class="hover-text">Pass*<span class="tooltip-text" id="bottom"><p>Type evaluation differs from other type checkers because of ambiguity in the spec related to method bindings.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> annotations_typeexpr</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Fails to reject various weird annotations</p></span></div></th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column" colspan="7">
<a class="test_group" href="https://typing.readthedocs.io/en/latest/spec/type-forms.html">Type forms</a>
</th></tr>
<tr><th class="column col1"> typeforms_typeform</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not support assigning Union and GenericAlias objects to their runtime types.</p></span></div></th>
<th class="column col2 not-conformant">Unsupported</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Fails to reject various weird annotations</p></span></div></th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column" colspan="7">
<a class="test_group" href="https://typing.readthedocs.io/en/latest/spec/special-types.html">Special types in annotations</a>
</th></tr>
<tr><th class="column col1"> specialtypes_any</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> specialtypes_never</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not enforce invariance in some contexts</p><p>Does not allow Any to be assigned to Never</p></span></div></th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> specialtypes_none</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> specialtypes_promotions</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> specialtypes_type</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not treat `type` same as `type[Any]` for assert_type.</p><p>Does not allow access to unknown attributes from object of type `type[Any]`.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Allows arbitrary attributes to be accessed on `TA` where `TA = typing.Type[typing.Any]` or `TA = type[typing.Any]`.</p><p>Treats `type` equivalently to `type[object]` rather than `type[typing.Any]`.</p></span></div></th>
</tr>
<tr><th class="column" colspan="7">
<a class="test_group" href="https://typing.readthedocs.io/en/latest/spec/generics.html">Generics</a>
</th></tr>
<tr><th class="column col1"> generics_base_class</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not detect inconsistent type variable ordering.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> generics_basic</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Incorrectly allows constrained type variables to be solved to a union of their constraints.</p></span></div></th>
</tr>
<tr><th class="column col1"> generics_defaults</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not detect a TypeVar with a default used after a TypeVarTuple.</p><p>Does not fully support defaults on TypeVarTuple and ParamSpec.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Numerous issues; does not support TypeVarTuple and ParamSpec defaults.</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not forbid a `TypeVar` immediately following a `TypeVarTuple` in a parameter list from having a default.</p><p>Does not support `TypeVarTuple`.</p></span></div></th>
</tr>
<tr><th class="column col1"> generics_defaults_referential</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not correctly handle defaults referencing other TypeVars.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Fails to apply default specializations in some cases.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> generics_defaults_specialization</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not correctly resolve defaults when classes are used directly.</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Allows incorrect assignment to type[].</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not reject subscription of an already-specialized generic class.</p></span></div></th>
</tr>
<tr><th class="column col1"> generics_paramspec_basic</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> generics_paramspec_components</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Incorrectly allows using `*args: P.args` and `**kwargs: P.kwargs` when `P` has not been put into scope by any other parameter annotation or enclosing scope.</p></span></div></th>
</tr>
<tr><th class="column col1"> generics_paramspec_semantics</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant"><div class="hover-text">Pass*<span class="tooltip-text" id="bottom"><p>Constraint solver doesn't find common type for two signatures captured by a single ParamSpec (allowed).</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> generics_paramspec_specialization</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> generics_scoping</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not implement several scoping checks/restrictions for generics</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not reject `list[T]()` in the global scope, where `T` is an unbound type variable.</p><p>Does nto reject `alias: TypeAlias = list[T]` in the body scope of a class generic over a type variable `T`.</p></span></div></th>
</tr>
<tr><th class="column col1"> generics_self_advanced</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not infer the type of an unannotated `self` parameter to be type `Self`.</p><p>Does not retain `Self` when calling method that returns `Self`.</p><p>Does not infer the type of an unannotated `cls` parameter to be type `type[Self]`.</p><p>Does not retain `Self` when accessing attribute through `type[Self]`.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant"><div class="hover-text">Pass*<span class="tooltip-text" id="bottom"><p>Treats attributes not initialized on the class as instance-only</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> generics_self_attributes</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> generics_self_basic</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> generics_self_protocols</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> generics_self_usage</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not reject `Self` used in a return annotation when `self` is annotated using another type variable.</p></span></div></th>
</tr>
<tr><th class="column col1"> generics_syntax_compatibility</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> generics_syntax_declarations</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> generics_syntax_infer_variance</th>
<th class="column col2 not-conformant"><div class="hover-text">Unsupported<span class="tooltip-text" id="bottom"><p>Type parameter syntax not yet supported.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> generics_syntax_scoping</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not following runtime scoping rules for type parameters in all cases.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Misses some details of scoping rules.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> generics_type_erasure</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Infers Node[Never] instead of Node[Any] when argument is not provided.</p><p>False negative on instance attribute access on type(node).</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not reject access of generic instance variable from the class object.</p></span></div></th>
</tr>
<tr><th class="column col1"> generics_typevartuple_args</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not enforce that tuples captured by TypeVarTuple are of the same length.</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not correctly solve TypeVarTuple with heterogeneous bounds.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Supports PEP-646 unpacked tuples but not TypeVarTuple.</p></span></div></th>
</tr>
<tr><th class="column col1"> generics_typevartuple_basic</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not enforce that tuples captured by TypeVarTuple are same length.</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not correctly solve TypeVarTuple with heterogeneous bounds.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 not-conformant">Unsupported</th>
</tr>
<tr><th class="column col1"> generics_typevartuple_callable</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 not-conformant">Unsupported</th>
</tr>
<tr><th class="column col1"> generics_typevartuple_concat</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 not-conformant">Unsupported</th>
</tr>
<tr><th class="column col1"> generics_typevartuple_overloads</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> generics_typevartuple_specialization</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Incorrectly specializes generic alias that includes a TypeVar and TypeVarTuple if no type arguments are provided.</p><p>Rejects specialization of generic type alias defined as a tuple containing a TypeVar.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 not-conformant">Unsupported</th>
</tr>
<tr><th class="column col1"> generics_typevartuple_unpack</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 not-conformant">Unsupported</th>
</tr>
<tr><th class="column col1"> generics_upper_bound</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not reject use of type variable within an upper bound.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> generics_variance</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not reject use of class-scoped TypeVar used in a base class when variance is incompatible.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> generics_variance_inference</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column" colspan="7">
<a class="test_group" href="https://typing.readthedocs.io/en/latest/spec/qualifiers.html">Type qualifiers</a>
</th></tr>
<tr><th class="column col1"> qualifiers_annotated</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not allow ClassVar to be nested within Annotated.</p><p>Does not allow Final to be nested within Annotated.</p><p>Does not allow Required and NotRequired to be nested within Annotated.</p><p>Does not reject type[T] compatibility for type alias defined with Annotated.</p><p>Does not reject call of type alias defined with Annotated.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Fails to reject various weird annotations.</p><p>False positive on lambda in Annotated.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> qualifiers_final_annotation</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not treat use of Final name as if it was replaced by the literal in NamedTuple definition.</p><p>Does not allow conditional assignment of Final instance variable in __init__ method.</p><p>Does not allow redefinition of private class variable that is marked Final in parent class.</p><p>Does not report modification of local Final variable via "for" statement.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> qualifiers_final_decorator</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column" colspan="7">
<a class="test_group" href="https://typing.readthedocs.io/en/latest/spec/class-compat.html">Class type compatibility</a>
</th></tr>
<tr><th class="column col1"> classes_classvar</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Internal error if TypeVarTuple is used in ClassVar.</p><p>Does not reject use of ParamSpec in ClassVar.</p><p>Rejects ClassVar nested in Annotated.</p><p>Does not reject use of ClassVar in TypeAlias definition.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> classes_override</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not honor `@override` compatibility checks for `__init__` and `__new__`:</p><p>the incompatible constructor overrides in `ChildC2` are not flagged.</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not honor `@override` compatibility checks for `__init__` and `__new__`:</p><p>the incompatible constructor overrides in `ChildC2` are not flagged.</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not honor `@override` compatibility checks for `__init__` and `__new__`:</p><p>the incompatible constructor overrides in `ChildC2` are not flagged.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not honor `@override` compatibility checks for `__init__` and `__new__`:</p><p>the incompatible constructor overrides in `ChildC2` are not flagged.</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not honor `@override` compatibility checks for `__init__` and `__new__`:</p><p>the incompatible constructor overrides in `ChildC2` are not flagged.</p></span></div></th>
</tr>
<tr><th class="column" colspan="7">
<a class="test_group" href="https://typing.readthedocs.io/en/latest/spec/aliases.html">Type aliases</a>
</th></tr>
<tr><th class="column col1"> aliases_explicit</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not reject specialization of type alias that has already been implicitly specialized.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not emit a diagnostic if a type alias to a union, in which every element of the union is implicitly specialized with `Unknown`, is invalidly specialized again.</p></span></div></th>
</tr>
<tr><th class="column col1"> aliases_implicit</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Fails to handle various weird annotations.</p><p>Various bugs with resolving generic aliases.</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not reject variables with `Any` or `Unknown` types when used as implicit type aliases.</p><p>Falls short on full syntactic validation of type aliases.</p></span></div></th>
</tr>
<tr><th class="column col1"> aliases_newtype</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>`NewType`s are incorrectly considered to be classes.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> aliases_recursive</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 not-conformant">Unsupported</th>
</tr>
<tr><th class="column col1"> aliases_type_statement</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Fails to reject various weird annotations.</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not reject circular definitions of type aliases.</p><p>Does not support `type` statements generic over `TypeVarTuple`s.</p></span></div></th>
</tr>
<tr><th class="column col1"> aliases_typealiastype</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Incorrectly rejects some recursive type aliases using TypeAliasType.</p><p>Incorrectly rejects the use of a class-scoped TypeVar in a TypeAliasType definition.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Rejects valid ParamSpec specialization.</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not reject specializing a type parameter in a generic type alias with a type inconsistent with the parameter's upper bound.</p><p>Does not reject declaring a type alias with a type variable that is not in scope.</p><p>Does not reject declaring a type alias with a non-literal tuple passed to the `type_params` parameter.</p><p>Does not reject cyclically defined type aliases.</p></span></div></th>
</tr>
<tr><th class="column col1"> aliases_variance</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column" colspan="7">
<a class="test_group" href="https://typing.readthedocs.io/en/latest/spec/literal.html">Literals</a>
</th></tr>
<tr><th class="column col1"> literals_interactions</th>
<th class="column col2 conformant"><div class="hover-text">Pass*<span class="tooltip-text" id="bottom"><p>Does not narrow `str` or `LiteralString` types to `Literal` string types via equality or containment checks.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant"><div class="hover-text">Pass*<span class="tooltip-text" id="bottom"><p>Deliberately does not allow `str` to be narrowed to literal string types through equality or containment checks due to the possibility of `str` subclasses that could have unexpected equality semantics.</p></span></div></th>
</tr>
<tr><th class="column col1"> literals_literalstring</th>
<th class="column col2 not-conformant"><div class="hover-text">Unsupported<span class="tooltip-text" id="bottom"><p>Support for `LiteralString` is not implemented.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> literals_parameterizations</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not reject tuple within Literal.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Fails to reject various invalid literal parameterizations.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> literals_semantics</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column" colspan="7">
<a class="test_group" href="https://typing.readthedocs.io/en/latest/spec/protocol.html">Protocols</a>
</th></tr>
<tr><th class="column col1"> protocols_class_objects</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Abstract type[Proto] still allows protocol class objects in some paths.</p></span></div></th>
<th class="column col2 not-conformant"><div class="hover-text">Unsupported<span class="tooltip-text" id="bottom"><p>`type[Proto]` is not yet supported.</p><p>`ClassVar` protocol members are not yet supported.</p><p>`@property` protocol members are only partially supported.</p><p>A class object `C` is only considered to inhabit a protocol type with a method member `f` if `f` exists as an attribute on the metaclass of `C`.</p></span></div></th>
</tr>
<tr><th class="column col1"> protocols_definition</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not detect protocol mismatch if concrete method is missing annotations.</p><p>Does not detect protocol mismatch if concrete method's parameters are position-only.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not reject implicit instance attributes in `Protocol` methods.</p><p>Does not support `ClassVar` protocol members.</p><p>Incorrectly considers `ClassVar` attributes on concrete classes as satisfying non-`ClassVar` attribute members on protocols.</p><p>Only has partial support for `@property` protocol members.</p></span></div></th>
</tr>
<tr><th class="column col1"> protocols_explicit</th>
<th class="column col2 conformant"><div class="hover-text">Pass*<span class="tooltip-text" id="bottom"><p>Does not report unimplemented attributes for class that explicitly derives from protocol until it is instantiated.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 not-conformant"><div class="hover-text">Unsupported<span class="tooltip-text" id="bottom"><p>Allows implicitly abstract protocol methods to be called via `super()` on a protocol subclass.</p><p>Allows instantiation of abstract subclasses of protocol classes.</p></span></div></th>
</tr>
<tr><th class="column col1"> protocols_generic</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Fails to reject duplicate generic/protocol bases.</p><p>Treats global object as a literal.</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Only partially supports `@property` protocol members.</p></span></div></th>
</tr>
<tr><th class="column col1"> protocols_merging</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not reject attempted instantiation of abstract subclasses of protocols.</p></span></div></th>
</tr>
<tr><th class="column col1"> protocols_modules</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Never considers a module as satisfying a protocol with a method member due to the fact that the method will never exist on the class `types.ModuleType`, only on a given specific module instance.</p></span></div></th>
</tr>
<tr><th class="column col1"> protocols_recursive</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Fails to solve a type variable involving a recursive generic protocol.</p></span></div></th>
</tr>
<tr><th class="column col1"> protocols_runtime_checkable</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not report unsafe overlap for runtime_checkable protocol.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not reject `isinstance()` or `issubclass()` calls against runtime-checkable protocols where there is an unsafe overlap between the type of the first argument and the protocol.</p></span></div></th>
</tr>
<tr><th class="column col1"> protocols_self</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> protocols_subtyping</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> protocols_variance</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 not-conformant">Unsupported</th>
</tr>
<tr><th class="column" colspan="7">
<a class="test_group" href="https://typing.readthedocs.io/en/latest/spec/callables.html">Callables</a>
</th></tr>
<tr><th class="column col1"> callables_annotation</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Incorrectly treats "*args: T, **kwargs: T" as "..." when T is specialized to Any.</p><p>Does not treat "*args: Any, **kargs: Any" as "..." when separated by keyword parameter.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Parameter names are lost when resolving ParamSpec</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Infers a callback protocol as being a gradual type if the callback has signature `__call__[T](self, *args: T, **kwargs: T)` and `T` has been explicitly specialized to `Any`.</p></span></div></th>
</tr>
<tr><th class="column col1"> callables_kwargs</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Allows callable without kwargs to be assigned to callable with unpacked kwargs</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> callables_protocol</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> callables_subtyping</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column" colspan="7">
<a class="test_group" href="https://typing.readthedocs.io/en/latest/spec/constructors.html">Constructors</a>
</th></tr>
<tr><th class="column col1"> constructors_call_init</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not report errors during binding to self parameter of __init__ method.</p><p>Does not reject use of class-scoped type variables in annotation of self parameter in __init__ method.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not reject invalid argument types to an inherited constructor in a specialized subclass of a generic superclass.</p><p>Does not reject class-scoped type variables used in the `self` annotation.</p></span></div></th>
</tr>
<tr><th class="column col1"> constructors_call_metaclass</th>
<th class="column col2 not-conformant"><div class="hover-text">Unsupported<span class="tooltip-text" id="bottom"><p>Does not honor metaclass __call__ method when evaluating constructor call.</p><p>Does not skip evaluation of __new__ and __init__ if custom metaclass call returns non-class.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> constructors_call_new</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not support __new__ return type that is not a subclass of the class being constructed.</p><p>Does not skip evaluation of __init__ based on __new__ return type.</p><p>Does not report errors during binding to cls parameter of __new__ method.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> constructors_call_type</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not validate call to custom metaclass __call__ method through type[T].</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Has overly lenient handling of calls to `type[T]` if `T` is a type variable without an upper bound.</p></span></div></th>
</tr>
<tr><th class="column col1"> constructors_callable</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not generate a union type for __new__ and __init__ when converting class to callable.</p><p>Does not ignore __init__ based on __new__ return type when converting class to callable.</p><p>Does not support __new__ return type that is different from class being constructed.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Converting constructor to callable does not preserve class-scoped type params.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not include `__init__` when `__new__` returns `Self`.</p><p>Does not ignore `__init__` when `__new__` returns `Any`.</p><p>Unions overload return types.</p></span></div></th>
</tr>
<tr><th class="column col1"> constructors_consistency</th>
<th class="column col2 conformant"><div class="hover-text">Pass*<span class="tooltip-text" id="bottom"><p>Does not report inconsistency between __new__ and __init__ (optional).</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column" colspan="7">
<a class="test_group" href="https://typing.readthedocs.io/en/latest/spec/overload.html">Overloads</a>
</th></tr>
<tr><th class="column col1"> overloads_basic</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does less literal promotion than the test asks for.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> overloads_consistency</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> overloads_definitions</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Allows @override to be on all overloads and implementation, instead of just implementation.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> overloads_definitions_stub</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Allows @override to appear in a stub file not on the first overload.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 not-conformant"><div class="hover-text">Unsupported<span class="tooltip-text" id="bottom"><p>Does not support checking stubs.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> overloads_evaluation</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not expand boolean arguments to Literal[True] and Literal[False].</p><p>Does not expand enum arguments to literal variants.</p><p>Does not expand tuple arguments to possible combinations.</p><p>Does not evaluate Any in some cases where overload is ambiguous.</p><p>Evaluates Any in some cases where overload is not ambiguous.</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not evaluate Any in some cases where overload is ambiguous.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column" colspan="7">
<a class="test_group" href="https://typing.readthedocs.io/en/latest/spec/exceptions.html">Exceptions</a>
</th></tr>
<tr><th class="column col1"> exceptions_context_managers</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Some error suppressing context managers are not detected</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 not-conformant">Unsupported</th>
</tr>
<tr><th class="column" colspan="7">
<a class="test_group" href="https://typing.readthedocs.io/en/latest/spec/dataclasses.html">Dataclasses</a>
</th></tr>
<tr><th class="column col1"> dataclasses_descriptors</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Assumes descriptor behavior only when field is assigned in class body.</p><p>Does not correctly evaluate type of descriptor access.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>* Assumes descriptor behavior only when field is assigned in class body</p><p>* Doesn't allow non-data descriptors or data descriptors with differing `__get__` and `__set__` types</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Conformance suite is questionable; see https://github.com/python/typing/issues/2259</p></span></div></th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Only infers a descriptor `__get__` method as being called when a descriptor attribute is accessed on an instance if the descriptor attribute is present in the class namespace.</p></span></div></th>
</tr>
<tr><th class="column col1"> dataclasses_final</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Wrongly requires a Final dataclass field to be initialized at class level.</p><p>Doesn't support Final nested inside ClassVar.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> dataclasses_frozen</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> dataclasses_hash</th>
<th class="column col2 not-conformant"><div class="hover-text">Unsupported<span class="tooltip-text" id="bottom"><p>Does not synthesize `__hash__ = None` as a class attribute for unhashable dataclasses.</p><p>Does not report when an unhashable dataclass has `__hash__` called directly on an instance.</p><p>Does not report when dataclass is not compatible with Hashable protocol.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Understands the `Hashable` protocol as equivalent to `object`.</p></span></div></th>
</tr>
<tr><th class="column col1"> dataclasses_inheritance</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> dataclasses_kwonly</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> dataclasses_match_args</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> dataclasses_order</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> dataclasses_postinit</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> dataclasses_slots</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not reject write to instance variable that is not defined in __slots__.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Synthesizes a `__slots__` attribute but does not validate attribute assignments against `__slots__`.</p></span></div></th>
</tr>
<tr><th class="column col1"> dataclasses_transform_class</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> dataclasses_transform_converter</th>
<th class="column col2 not-conformant"><div class="hover-text">Unsupported<span class="tooltip-text" id="bottom"><p>Converter parameter not yet supported.</p></span></div></th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
<th class="column col2 conformant">Pass</th>
</tr>
<tr><th class="column col1"> dataclasses_transform_field</th>
<th class="column col2 partially-conformant"><div class="hover-text">Partial<span class="tooltip-text" id="bottom"><p>Does not properly handle field constructor that has default value for `kw_only` or `init` parameter.</p></span></div></th>
<th class="column col2 conformant">Pass</th>