def open(cls, file: "File", location: list[dict]):
        """Stream file from tar archive based on location in archive."""
        tar_file = cls.parent(file, location)

        loc = location[0]

        if (offset := loc.get("offset", None)) is None:
            raise VFileError("'offset' is not specified", file.source, file.path)

        if (size := loc.get("size", None)) is None:
            raise VFileError("'size' is not specified", file.source, file.path)

        client = file._catalog.get_client(tar_file.source)
        fd = client.open_object(tar_file, use_cache=file._caching_enabled)
        return FileSlice(fd, offset, size, file.name)
Stream file from tar archive based on location in archive.
src/datachain/lib/file.py