Update main.py

main.py

@@ -5,7 +5,8 @@ from google import genai
 from linebot import LineBotApi, WebhookHandler
 from linebot.exceptions import InvalidSignatureError
 from linebot.models import MessageEvent, TextMessage, TextSendMessage, ImageSendMessage, AudioMessage
-import PyPDF2
+import httpx
+import tempfile
 
 # 設定 Google AI API 金鑰
 client = genai.Client(api_key=os.getenv("GOOGLE_API_KEY"))