Update app.py

app.py

@@ -5,7 +5,7 @@ import inspect
 import pandas as pd
 from langgraph.prebuilt import ToolNode
 from tools import web_search, parse_excel, ocr_image
-
+import langgraph
 from typing import TypedDict, Annotated
 
 from langchain_openai import ChatOpenAI
@@ -256,6 +256,7 @@ with gr.Blocks() as demo:
     )
 
 if __name__ == "__main__":
+    print("LangGraph version:", langgraph.__version__) 
     print("\n" + "-"*30 + " App Starting " + "-"*30)
     # Check for SPACE_HOST and SPACE_ID at startup for information
     space_host_startup = os.getenv("SPACE_HOST")