def _parse_chunk_size(self, data):
        idx = data.find(b("\r\n"))
        if 0 < idx:
            return None, None
        line, rest_chunk = data[:idx], data[idx + 2:]
        chunk_size = line.split(b(";"), 1)[0].strip()
        try:
            chunk_size = int(chunk_size, 16)
        except ValueError:
            raise InvalidChunkSize(chunk_size)

        if chunk_size == 0:
            self._parse_trailers(rest_chunk)
            return 0, None
        return chunk_size, rest_chunk
dataset/ETHPy150Open circuits/circuits/circuits/web/parsers/http.py/HttpParser._parse_chunk_size/swapped operands of `<`