def async_download_status():
videos = []
fd = os.open(mark_file, os.O_RDWR)
content = os.read(fd, 1024*1024)
json_videos = json.loads(content, encoding="utf-8")
for json_video in json_videos:
video = Video()
video.set_path(json_video["path"])
video.set_name(json_video["name"])
video.set_link(json_video["link"])
flag = False
if file_exist(video.get_path()) and os.path.getsize(video.get_path()) > Constant.fie_min_size:
flag = True
video.set_download_status(flag)
videos.append(video)
os.close(fd)
write_2_mark(videos)
