Update app.py

app.py

@@ -75,13 +75,13 @@ with tab1:
 
         building_mag_prediction_data = building_new[['time', 'x', 'y', 'z', 'temperature', 'et0_fao_evapotranspiration']]
 
-        def add_small_value_if_zero(value):
-            if value == NaN:
+        def fill_nan_with_zero(value):
+            if pd.isna(value):
                 return 0
             else:
                 return value
         
-        building_mag_prediction_data['et0_fao_evapotranspiration'] = building_mag_prediction_data['et0_fao_evapotranspiration'].apply(add_small_value_if_zero)
+        building_mag_prediction_data['et0_fao_evapotranspiration'] = building_mag_prediction_data['et0_fao_evapotranspiration'].apply(fill_nan_with_zero)
 
         st.dataframe(building_mag_prediction_data)