code: def get_scn(unit):
      
      scn = 0
      list = cut_for_search(unit)
      for x in list:
          for y in chinese_character:
              if x == y:
                  scn += len(y)
      return int(scn)
docs: 获取文本行中可能不属于新闻正文的单词的个数
  
      Keyword arguments:
      unit                    -- 文本行
      Return:
          scn                  -- 特殊中文字符