def writelines_with_endl(fp, contents, num=1):
     """
     带换行写多行内容
     :param fp: 文件对象
     :param contents: 要写入的多行内容,列表
     """
     if contents is not None:
         for line in contents:
             fp.write(line + '\n' * num)
     else:
         logger.info("empty content")
 def writeline_with_endl(fp, content, num=2):
     """
     带换行写内容
     :param num: 换行个数
     :param fp: 文件对象
     :param content: 要写入的内容
     """
     if content is not None:
         fp.write(content + '\n' * num)
     else:
         logger.info("empty content")