def _classinfo(self):
    if self.classinfo:
        return self.classinfo
    from_data = {'lessonKey': self.lessonkey}
    r = requests.post('https://www.eeo.cn/saasajax/webcast.ajax.php?action=getLessonClassInfo', data=from_data)
    self.classinfo = json.loads(r.text)
    return self.classinfo
def _classinfo(self):
    if self.classinfo:
        return self.classinfo
    from_data = {'lessonKey': self.lessonkey}
    r = requests.post('https://www.eeo.cn/saasajax/webcast.ajax.php?action=getLessonClassInfo', data=from_data)
    self.classinfo = json.loads(r.text)
    return self.classinfo