Update psychohistory.py

psychohistory.py

@@ -213,4 +213,4 @@ def main(json_data):
     if shortest_path:
         draw_path_3d(G, shortest_path, 'shortest_duration_path.png', 'purple')
 
-    return 'global_tree.png'  # Return the filename of the global tree
+    return ('global_tree.png','best_path.png','longest_duration_path.png')  # Return the filename of the global tree