Update app.py

app.py

@@ -223,7 +223,7 @@ def house_price(LotArea, LotFrontage, YearBuilt, GrLivArea, GarageArea):
     df[categorical_columns] = df[categorical_columns].apply(lambda x: x.cat.codes)
     df = (df - df.mean()) / df.std()
 
-    predictions = model.predict(test)
+    predictions = model.predict(df)
 
     return predictions[0]