Update app.py

app.py

@@ -54,7 +54,9 @@ docx_converter = DocxToTextConverter()
 
 # check if the abstractive-question-answering index exists
 if index_name not in pinecone.list_indexes():
-    # create the index if it does not exist
+    # delete the current index and create the new index if it does not exist
+    for delete_index in pinecone.list_indexes():
+        pinecone.delete_index(delete_index)
     pinecone.create_index(index_name, dimension=1536, metric="cosine")
 
 # connect to abstractive-question-answering index we created