Update agent.py

agent.py

@@ -7,8 +7,7 @@ from langgraph.graph import MessagesState
 from langgraph.graph import StateGraph, START, END
 from typing import Literal
 
-from langchain_community.tools import BraveSearch  # web search
-from langchain.tools import Calculator  # for basic math
+from langchain_community.tools import BraveSearch, Calculator  # web search and basic math
 from langchain.tools.python.tool import PythonAstREPLTool  # for logic/math problems
 
 from tools import (datetime_tools, transcribe_audio_tool)