Update app.py

app.py

@@ -74,7 +74,7 @@ rate_limiter = InMemoryRateLimiter(
 )
 
 chat = ChatGoogleGenerativeAI(model="gemini-2.0-flash", temperature=0, rate_limiter=rate_limiter)
-tools = [
+tools_list = [
     multiply,
     add,
     subtract,
@@ -103,7 +103,7 @@ class BasicAgent:
     def __init__(self):
         graph = StateGraph(MessagesState)
         graph.add_node("assistant", assistant)
-        graph.add_node("tools", ToolNode(tools))
+        graph.add_node("tools", ToolNode(tools_list))
         graph.add_edge(START, "assistant")
         graph.add_conditional_edges("assistant", tools_condition)
         graph.add_edge("tools", "assistant")