from _typeshed import ReadableBuffer
from typing import final

@final
class BZ2Compressor:
    def __init__(self, compresslevel: int = 9) -> None: ...
    def compress(self, data: ReadableBuffer, /) -> bytes: ...
    def flush(self) -> bytes: ...

@final
class BZ2Decompressor:
    def decompress(self, data: ReadableBuffer, max_length: int = -1) -> bytes: ...
    @property
    def eof(self) -> bool: ...
    @property
    def needs_input(self) -> bool: ...
    @property
    def unused_data(self) -> bytes: ...