我正在开展一个学校项目,在python平台上开发一个定制的媒体播放器.问题是当我使用time.sleep(duration)时,它会阻止我的GUI的主循环,阻止它更新.我咨询了我的主管,并被告知要使用多线程,但我不知道如何使用线程.有人会建议我如何在下面的场景中实现线程吗？

码:

def load_playlist(self, event):
    playlist = ["D:\Videos\test1.mp4", "D:\Videos\test2.avi"]
    for path in playlist:
        #calculate each media file duration
        ffmpeg_command = ['C:\\MPlayer-rtm-svn-31170\\ffmpeg.exe', '-i' , path]

        pipe = subprocess.Popen(ffmpeg_command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
        results = pipe.communicate()

        #Regular expression to get the duration
        length_regexp = 'Duration: (\d{2}):(\d{2}):(\d{2})\.\d+,'
        re_length = re.compile(length_regexp)

        # find the matches using the regexp that to compare with the buffer/string
        matches = re_length.search(str(results))
        #print matches

        hour = matches.group(1)
        minute = matches.group(2)
        second = matches.group(3)

        #Converting to second
        hour_to_second = int(hour) * …