use dynamic delay retry

bots/tasks.py

@@ -3,6 +3,8 @@ import logging
 import os
 import traceback
 
+from telegram.error import RetryAfter
+
 from config.celery import app
 from djconfig import config
 
@@ -32,6 +34,8 @@ def upload_image_rpc(self, queued_image_pk, fpath, caption):
             qi.processed = True
             qi.save()
         os.unlink(fpath)
+    except RetryAfter as e:
+        raise self.retry(exc=e, countdown=int(e.retry_after))
     except Exception as e:
         traceback.print_exc()
         raise self.retry(exc=e, countdown=5)