code: def skip_char(text, sp_char_list):
      """
      skip empty cell
      @param text: text in cell
      @param sp_char_list: style char and special code
      @return:
      """
      for sp_char in sp_char_list:
          text = text.replace(sp_char, "")
      return text
  
file_path: PaddleOCR/ppstructure/table/convert_label2html.py
imports: import json
  import argparse
  from tqdm import tqdm
label_desc: Use image node_id 2 for calling a global function with example usage: skip_char(text, sp_char_list) and returns: text