code: def insert_symbol_mapping(raw_data_id, symbol_id, user_id, strokes):
      
      mysql = utils.get_mysql_cfg()
      connection = pymysql.connect(host=mysql['host'],
                                   user=mysql['user'],
                                   passwd=mysql['passwd'],
                                   db=mysql['db'],
                                   charset='utf8mb4',
                                   cursorclass=pymysql.cursors.DictCursor)
      cursor = connection.cursor()
      sql = ("INSERT INTO `wm_partial_answer` "
             "(`recording_id`, `symbol_id`, `strokes`, `user_id`, "
             "`is_accepted`) "
             "VALUES (%s, %s, %s, %s, 1);")
      data = (raw_data_id,
              symbol_id,
              ",".join([str(stroke) for stroke in strokes]),
              user_id)
      cursor.execute(sql, data)
      connection.commit()
docs: Insert data into `wm_strokes_to_symbol`.
  
      Parameters
      ----------
      raw_data_id : int
      user_id : int
      strokes: list of int