docs: def pickle_m2f(dat, pth):
      """
          将 dat 内容同步到文件存储中
  
      :param dat:
      :type dat:
      :param pth:
      :type pth:
      :return:
      :rtype:
      """
      mkdir_p(pth)
      # 为了2与3兼容, 设置 dump 的协议为 2
      with open(pth, 'wb') as f:
          pickle.dump(dat, f, 2)