node type

app.py

@@ -138,7 +138,7 @@ def dynamic_visualize_graph(graph, start_node, layers=3, top_k=5, show_titles=Fa
         next_nodes = []
         for node in current_nodes:
             neighbors = sorted(
-                [(int(neighbor), data['weight']) for neighbor, data in graph[node].items()],
+                [(str(neighbor), data['weight']) for neighbor, data in graph[node].items()],
                 key=lambda x: x[1],
                 reverse=True
             )[:top_k]