code: def gen_slide_seg_list(mm_begin, mm_end, seg_duration, slide_step):
      
      seg_begin_list = [i for i in
                        range(mm_begin, mm_end - seg_duration + 1, slide_step)]
      seg_list = list(map(time_util.minutes_to_time_str, seg_begin_list))
      return seg_list
docs: 生成时间片开始时刻列表,时间片以slide_step步长进行滑动
      :param mm_begin:
      :param mm_end:
      :param seg_duration:
      :param slide_step:
      :return: