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Improve method annotations #259

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6 changes: 3 additions & 3 deletions src/cattrs/converters.py
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Original file line number Diff line number Diff line change
Expand Up @@ -184,7 +184,7 @@ def __init__(
# Unions are instances now, not classes. We use different registries.
self._union_struct_registry: Dict[Any, Callable[[Any, Type[T]], T]] = {}

def unstructure(self, obj: Any, unstructure_as=None) -> Any:
def unstructure(self, obj: Any, unstructure_as: Optional[type] = None) -> Any:
return self._unstructure_func.dispatch(
obj.__class__ if unstructure_as is None else unstructure_as
)(obj)
Expand All @@ -198,7 +198,7 @@ def unstruct_strat(self) -> UnstructureStrategy:
else UnstructureStrategy.AS_TUPLE
)

def register_unstructure_hook(self, cls: Any, func: Callable[[T], Any]) -> None:
def register_unstructure_hook(self, cls: Type[T], func: Callable[[T], Any]) -> None:
"""Register a class-to-primitive converter function for a class.

The converter function should take an instance of the class and return
Expand Down Expand Up @@ -235,7 +235,7 @@ def register_unstructure_hook_factory(
"""
self._unstructure_func.register_func_list([(predicate, factory, True)])

def register_structure_hook(self, cl: Any, func: Callable[[Any, Type[T]], T]):
def register_structure_hook(self, cl: Type[T], func: Callable[[Any, Type[T]], T]):
"""Register a primitive-to-class converter function for a type.

The converter function should take two arguments:
Expand Down