Update app.py

app.py

@@ -12,10 +12,14 @@ import os
 from dotenv import load_dotenv
 import uuid
 
+
 # Google Books API setup
+os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = "../audiobookagent-aaf910cd6329.json"
 google_api_key = os.getenv("AIzaSyDOxfDDznu39CSWR3wlGK-eEV2XH2zoGf4")
 books_service = build("books", "v1", developerKey=google_api_key)
 
+
+
 # I want to try connect to a google API to get some recommendation of audiobooks!
 @tool
 def search_audiobooks(topic:str, limit:int=3)-> str: #it's import to specify the return type