Update app.py

app.py

@@ -215,12 +215,13 @@ def test(input_json):
         
         # for weighted accessibility (e. g. areas)
         if not destinationWeights.empty:
-        subdomainsAccessibility = pd.DataFrame(index=DistanceMatrix.index, columns=destinationWeights.columns)
+            subdomainsAccessibility = pd.DataFrame(index=DistanceMatrix.index, columns=destinationWeights.columns)
             for col in destinationWeights.columns:
                 subdomainsAccessibility[col] = (decay_factors * destinationWeights[col].values).sum(axis=1)
         # for unweighted accessibility (e. g. points of interest)
         else:
-            for col in DistanceMatrix.columns:
+            subdomainsAccessibility = pd.DataFrame(index=DistanceMatrix.index, columns='ART')
+            for col in subdomainsAccessibility.columns:
                 subdomainsAccessibility[col] = (decay_factors * 1).sum(axis=1)
         
         return subdomainsAccessibility