from __future__ import annotations

__all__ = [
    "NestedSequence",
    "SupportsBufferProtocol",
]

from typing import (
    Any,
    TypeVar,
    Protocol,
)

_T_co = TypeVar("_T_co", covariant=True)

class NestedSequence(Protocol[_T_co]):
    def __getitem__(self, key: int, /) -> _T_co | NestedSequence[_T_co]: ...
    def __len__(self, /) -> int: ...

SupportsBufferProtocol = Any

Array = Any
Device = Any