Function _send_local_file

pymysql/connections.py:1492–1508

Send data packets from the local file to the server

(filename: str, conn: Connection)

def _send_local_file(filename: str, conn: Connection):
    """Send data packets from the local file to the server"""
    packet_size = min(conn.max_allowed_packet, 16 * 1024)

    try:
        with open(filename, "rb") as file:
            # 16KB is efficient enough
            while True:
                chunk = file.read(packet_size)
                if not chunk:
                    break
                conn.write_packet(chunk)
    except OSError as e:
        raise err.OperationalError(
            ER.FILE_NOT_FOUND,
            f"Can't open file '{filename}': {e}",
        )