get_item_from_findItemsByCategory returns None if call limit is reach. conky will save and exit

ebay_api.py

@@ -239,7 +239,7 @@ class ShoppingApi:
         except (requests.exceptions.RequestException, KeyError): # TODO need better handling
             print('connection error. IP limit possibly exceeded')
             print('index number {}'.format(item_id_results.index(twenty_id)))
-            return
+            return # returns NoneType. Handle at conky()
 
         return response
 
@@ -264,15 +264,14 @@ class ShoppingApi:
 
         with concurrent.futures.ThreadPoolExecutor() as executor: # NOTE may need to include sleeps to avoid connection refusal due to overwhelming servers
             for future in executor.map(self.get_item_from_findItemsByCategory, item_id_results):
-                for item in future:
-                    data.append(item) # The end result should be a list of dicts where each dict in the list is a listing
-                # data.update(future)
+                if future is not None:
+                    for item in future:
+                        data.append(item) # The end result should be a list of dicts where each dict in the list is a listing data.update(future)
+                else:
+                    break
         with open('raw_data.txt', 'w') as f:
-            json.dump(data, f) # TODO maybe write for every future returned to avoid losing data if your accidentally reach
-            # the call limit and you get an error
-        return data # each future is a list of dictionaries because the output of any multithreader in this method is a list. 
+            json.dump(data, f)
 
-    # data dictionary can't update from list of dicts unless iterated over. Might need a different way to update. 
 # TODO It seems like the problem with updating the dictionary/csv file is starting here possibly; I think the item data is getting appended out of order from the item itself. 
 
 # NOTE: