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from collections.abc import Callable, Hashable
from typing import Any, SupportsInt, TypeVar
from typing_extensions import TypeAlias
_T = TypeVar("_T")
_Reduce: TypeAlias = tuple[Callable[..., _T], tuple[Any, ...]] | tuple[Callable[..., _T], tuple[Any, ...], Any | None]
__all__ = ["pickle", "constructor", "add_extension", "remove_extension", "clear_extension_cache"]
def pickle(
ob_type: type[_T],
pickle_function: Callable[[_T], str | _Reduce[_T]],
constructor_ob: Callable[[_Reduce[_T]], _T] | None = None,
) -> None: ...
def constructor(object: Callable[[_Reduce[_T]], _T]) -> None: ...
def add_extension(module: Hashable, name: Hashable, code: SupportsInt) -> None: ...
def remove_extension(module: Hashable, name: Hashable, code: int) -> None: ...
def clear_extension_cache() -> None: ...
_DispatchTableType: TypeAlias = dict[type, Callable[[Any], str | _Reduce[Any]]] # imported by multiprocessing.reduction
dispatch_table: _DispatchTableType # undocumented
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