Update app.py

app.py

@@ -22,7 +22,7 @@ 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
+def search_audiobooks(topic: str, limit: int = 3)-> List[Dict[str, Any]]: #it's import to specify the return type
     #Keep this format for the description / args / args description but feel free to modify the tool
     """The tool is designed to connect to the google API platform and retrieve some audiobooks recommendations 
     Args:
@@ -52,7 +52,7 @@ def search_audiobooks(topic:str, limit:int=3)-> str: #it's import to specify the
 
 @tool
 # Function to estimate if audiobook fits time constraint
-def filter_by_time(audiobooks, free_time):
+def filter_by_time(audiobooks: List[Dict[str, Any]], free_time: str) -> List[Dict[str, Any]]:
     """The tool is designed to match the time in terms of duration of the audiobook which is called estimated_minutes and the free time that the person have 
     Args:
         audiobooks: the list of the audiobooks