Update app.py

app.py

@@ -1,3 +1,5 @@
+import backoff
+import openai
 from openai import OpenAI
 import requests
 import base64
@@ -53,7 +55,7 @@ def get_imgs_from_folder(image_files, zipfile):
 
   return image_files
 
-
+@backoff.on_exception(backoff.expo, openai.RateLimitError)
 def get_seo_tags(image_path, topical_map, attempts=0):
   '''
   Gets the seo tags and topic/sub-topic classification for an image using OpenAI GPT-4 Vision Preview