Update app.py

app.py

@@ -29,13 +29,15 @@ models = [
 
 ####  REM-BG
 
-model_choices = keys(remove_bg_models)
-
 remove_bg_models = {
     "TracerUniversalB7": "TracerUniversalB7",
     "U2NET": "u2net",
     "U2NET Human Seg": "u2net_human_seg",
     "U2NET Cloth Seg": "u2net_cloth_seg"
+}
+
+model_choices = keys(remove_bg_models)
+
 
 def predict(image, session, smoot, matting, bg_color):
 
@@ -85,8 +87,7 @@ def change_background_mode(chk_state):
     return gr.ColorPicker.update(value=False, visible=chk_state), \
         gr.Checkbox.update(value=False, visible=chk_state)
 
-    
-}
+
 
 ###########