How to use the fsspec.core.OpenFile function in fsspec

OpenFile(fs, path, compression=compression),
                o,
                l,
                delimiter,
                dask_key_name=key,
            )
            for o, key, l in zip(offset, keys, length)
        ]
        out.append(values)

    if sample:
        if sample is True:
            sample = "10 kiB"  # backwards compatibility
        if isinstance(sample, str):
            sample = parse_bytes(sample)
        with OpenFile(fs, paths[0], compression=compression) as f:
            # read block without seek (because we start at zero)
            if delimiter is None:
                sample = f.read(sample)
            else:
                sample_buff = f.read(sample)
                while True:
                    new = f.read(sample)
                    if not new:
                        break
                    if delimiter in new:
                        sample_buff = (
                            sample_buff + new.split(delimiter, 1)[0] + delimiter
                        )
                        break
                    sample_buff = sample_buff + new
                sample = sample_buff

List of ``OpenFile`` objects.
    """
    fs, fs_token, paths = get_fs_token_paths(
        urlpath,
        mode,
        num=num,
        name_function=name_function,
        storage_options=kwargs,
        protocol=protocol,
        expand=expand,
    )
    if "r" not in mode and auto_mkdir:
        parents = {fs._parent(path) for path in paths}
        [fs.makedirs(parent, exist_ok=True) for parent in parents]
    return [
        OpenFile(
            fs,
            path,
            mode=mode,
            compression=compression,
            encoding=encoding,
            errors=errors,
            newline=newline,
        )
        for path in paths
    ]

length = [blocksize] * len(off)
            if not_zero:
                off[0] = 1
                length[0] -= 1
            offsets.append(off)
            lengths.append(length)

    delayed_read = delayed(read_block_from_file)

    out = []
    for path, offset, length in zip(paths, offsets, lengths):
        token = tokenize(fs_token, delimiter, path, fs.ukey(path), compression, offset)
        keys = ["read-block-%s-%s" % (o, token) for o in offset]
        values = [
            delayed_read(
                OpenFile(fs, path, compression=compression),
                o,
                l,
                delimiter,
                dask_key_name=key,
            )
            for o, key, l in zip(offset, keys, length)
        ]
        out.append(values)

    if sample:
        if sample is True:
            sample = "10 kiB"  # backwards compatibility
        if isinstance(sample, str):
            sample = parse_bytes(sample)
        with OpenFile(fs, paths[0], compression=compression) as f:
            # read block without seek (because we start at zero)

[ ]: with sel.open_file('rb') as f:
            ...      out = f.read()

        Parameters
        ----------
        mode: str (optional)
            Open mode for the file.
        compression: str (optional)
            The interact with the file as compressed. Set to 'infer' to guess
            compression from the file ending
        encoding: str (optional)
            If using text mode, use this encoding; defaults to UTF8.
        """
        if self.urlpath is None:
            raise ValueError("No file selected")
        return OpenFile(self.fs, self.urlpath, mode, compression, encoding)

def __reduce__(self):
        return (
            OpenFile,
            (
                self.fs,
                self.path,
                self.mode,
                self.compression,
                self.encoding,
                self.errors,
                self.newline,
            ),