How to use the clevercsv.Detector function in clevercsv

def worker(args, return_dict, **kwargs):
    det = clevercsv.Detector()
    filename, encoding, partial = args
    return_dict["error"] = False
    return_dict["dialect"] = None
    return_dict["method"] = None
    with gzip.open(filename, "rt", newline="", encoding=encoding) as fp:
        data = fp.read(N_BYTES_PARTIAL) if partial else fp.read()
        try:
            return_dict["dialect"] = det.detect(data, **kwargs)
            return_dict["method"] = det.method_
        except clevercsv.Error:
            return_dict["error"] = True

def worker(args, return_dict, **kwargs):
    det = clevercsv.Detector()
    filename, encoding = args
    with gzip.open(filename, "rt", newline="", encoding=encoding) as fid:
        return_dict["dialect"] = det.detect(fid.read(N_BYTES))

def detector(gz_filename, encoding, n_lines=None):
    det = clevercsv.Detector()
    sample = get_sample(gz_filename, encoding, n_lines=n_lines)

    try:
        dialect = det.detect(sample)
    except clevercsv.Error:
        raise DetectionError

    if dialect is None:
        return None
    return dict(
        delimiter=dialect.delimiter,
        quotechar=dialect.quotechar,
        escapechar=dialect.escapechar,
    )