Update app.py

app.py

@@ -3,6 +3,8 @@ from pydantic import BaseModel
 from fastapi.middleware.cors import CORSMiddleware
 import os
 import google.generativeai as genai
+from google.generativeai.types import Content
+from typing import List, Optional
 
 genai.configure(api_key=os.environ["GEMINI_API_KEY"])
 model = genai.GenerativeModel("gemini-1.5-flash")