@@ -404,7 +404,7 @@ class LensmanInfo(BaseModelMixin):  | 
            ||
| 404 | 404 | 
                def is_expired(self):  | 
            
| 405 | 405 | 
                now_time = datetime.datetime.now()  | 
            
| 406 | 406 | 
                now_date = datetime.date(now_time.year, now_time.month, now_time.day)  | 
            
| 407 | 
                - return not (self.start_date <= now_date <= self.end_date)  | 
            |
| 407 | 
                + return not self.start_date <= now_date <= self.end_date if self.start_date and self.end_date else False  | 
            |
| 408 | 408 | 
                 | 
            
| 409 | 409 | 
                @property  | 
            
| 410 | 410 | 
                def data(self):  |