Update app.py

app.py

@@ -3,7 +3,7 @@ import joblib
 import pandas as pd
 import streamlit as st
 from sklearn.model_selection import train_test_split
-from sklearn.metrics import r2_score
+from sklearn.metrics import r2_score, mean_absolute_error, mean_squared_error
 from typing import List, Dict, Any
 
 # Constants for directories and file names