Update rag.py

rag.py

@@ -94,7 +94,7 @@ def retrieve_documents_mongodb():
                                                              MONGODB_DB_NAME + "." + MONGODB_COLLECTION_NAME,
                                                              OpenAIEmbeddings(disallowed_special = ()),
                                                              index_name = MONGODB_INDEX_NAME)
-        print cb
+        print(cb)
 
     return db