Update app.py

app.py

@@ -9,7 +9,7 @@ import tempfile
 learn = load_learner('model.pkl')
 labels = learn.dls.vocab
 
-def audio_to_spectrogram(audio_file):
+def audio_to_spectrogram(audio_file): 
     if audio_file.endswith('.mp3'):
         with tempfile.NamedTemporaryFile(suffix='.wav') as temp_wav:
             audio = AudioSegment.from_mp3(audio_file)