Update app.py

app.py

@@ -51,6 +51,8 @@ def download_audio(url):
         yt = YouTube(url)
         audio_stream = yt.streams.filter(only_audio=True).first()
         with NamedTemporaryFile(delete=False) as tempfile:
+    # Your code to use the tempfile
+
             audio_stream.download(filename=tempfile.name)
             return tempfile.name
     except pytube_exceptions.PytubeError as e: