Update app.py

updated the doc string of get_file

app.py

@@ -58,10 +58,15 @@ class BasicAgent:
         # return answer.text
 
     @tool
-    def get_file(self: any, task_id: str) -> IO:
+    def get_file(self, task_id: str) -> IO:
         '''
         Downloads the file associated with the given task_id, if one exists and is mapped.
         If the question mentions an attachment, use this function.
+        Args:
+            self: The class instance.
+            task_id: Id of the question.
+        Returns:
+            The file associated with the question.
         '''
         file_request = requests.get(url=f'https://agents-course-unit4-scoring.hf.space/files/{task_id}')
         file_request.raise_for_status()