Update app.py

app.py

@@ -12,7 +12,12 @@ from langchain_openai import ChatOpenAI
 from langgraph.graph import StateGraph, START, END
 from langgraph.graph.message import add_messages
 import langgraph
-print("▶︎ LangGraph version:", langgraph.__version__)
+import importlib.metadata
+try:
+    lg_ver = importlib.metadata.version("langgraph")
+    print("▶︎ LangGraph version:", lg_ver)
+except importlib.metadata.PackageNotFoundError:
+    print("LangGraph is not installed.")
 # Create a ToolNode that knows about your web_search function
 
 # (Keep Constants as is)
@@ -311,7 +316,7 @@ if __name__ == "__main__":
     space_host_startup = os.getenv("SPACE_HOST")
     space_id_startup = os.getenv("SPACE_ID") # Get SPACE_ID at startup
     # import langgraph
-    print("▶︎ LangGraph version:", langgraph.__version__)
+    # print("▶︎ LangGraph version:", langgraph.__version__)
     if space_host_startup:
         print(f"✅ SPACE_HOST found: {space_host_startup}")
         print(f"   Runtime URL should be: https://{space_host_startup}.hf.space")