Update app.py

app.py

@@ -13,6 +13,8 @@ import outlines
 import validators
 import numpy as np
 import pandas as pd
+import pyarrow as pa
+import pyarrow.parquet as pq
 import streamlit as st
 from numpy import ndarray
 from datetime import datetime
@@ -880,7 +882,7 @@ if __name__ == '__main__':
                             'time': datetime.strptime(processing_time, '%d %b %Y, %I:%M %p'),
                             'toggle': True
                         }
-                    
+
                     st.session_state.df.to_parquet(
                         os.path.join(
                             data_editor_path,