Update agent.py

agent.py

@@ -1,6 +1,20 @@
 from langchain.agents import AgentType, initialize_agent, load_tools, tool
 from langchain.chat_models import ChatOpenAI
 
+OPENWEATHERMAP_API_KEY = os.environ["OPENWEATHERMAP_API_KEY"]
+
+config = {
+    "model": "gpt-4-0613",
+    "temperature": 0,
+}
+
+@tool
+def date_tool(text: str) -> str:
+    """Returns today's date. Use this for any questions related to knowing today's date. 
+       The input should always be an empty string, and this function will always return today's date. 
+       Any date mathematics should occur outside this function."""
+    return str(date.today())
+
 def invoke_agent(openai_api_key, prompt):
     llm = ChatOpenAI(
         model_name = config["model"],