Update app.py

app.py

@@ -480,7 +480,7 @@ if __name__=='__main__':
             gr.Interface(fn=predict_single, inputs=["text", "number","number","number","number","number"], outputs='number')
         with gr.Tab("Batch prediction"):
             gr.Interface(fn=predict_xlsx,description='please upload a .csv file formatted in the form of the example', inputs="file", outputs="file",examples=[os.path.join(os.path.dirname(__file__),"TLC_1.csv")],cache_examples=True)
-        with gr.Tab("Rf compare")
+        with gr.Tab("Rf compare"):
             gr.Interface(fn=predict_compare, inputs=["text", "text"], outputs=["image","image","image"],
                          description='input: smiles of two compounds, such as CC(OCC)=O and CC(C)CCC(NC(C)C)=O\n output: three images that show the Rf curve with different eluent ratios under PE/EA, DCM/MeOH, PE/Et2O system.\n\n')
     demo.launch()