text: def cleanup_header(lines_text):
      """
      This function cleans up some lines of text contained in a list of strings.
      :param lines_text: lines of text
      :return: header of the file "cleaner"
      Example:
      >>> cleanup_header(['# hello',"\t,# ciao"])
      ['hello', 'ciao']
  
      """
      lines_text = [s.replace("#", '') for s in lines_text]
      lines_text = [s.replace("\n", '') for s in lines_text]
      lines_text = [s.replace("\t", ' ') for s in lines_text]
      lines_text = [s.replace(" ", '') for s in lines_text]
      header = list(lines_text)
      return header
  
  