imagine using .length instead of len() what a java noob

app.py

@@ -110,6 +110,6 @@ def predict_image(image):
   return results
 
 image = gr.inputs.Image(shape=(300, 300), label="Upload Your Image Here")
-label = gr.outputs.Label(num_top_classes=labels.length)
+label = gr.outputs.Label(num_top_classes=len(labels))
 
 gr.Interface(fn=predict_image, inputs=image, outputs=label, capture_session=True, article=doc.getvalue(), css=my_css, theme='huggingface', title=title, allow_flagging=False, description=description).launch(share=True, debug=True)