Update app.py

app.py

@@ -36,12 +36,16 @@ class model:
     def __init__(self):
         self.model = None
         self.model_name = None
+        self.model_path = None
 
     def gradio_demo(self, model_name, sequence_input, image):
         device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
         if self.model_name != model_name:
+            if self.model_path is not None:
+                os.remove(self.model_path)
             self.model_name = model_name
             model_ckpt_path = hf_hub_download(repo_id=f"HuangLab/{model_name}", filename="model.ckpt")
+            self.model_path = model_ckpt_path
             model_config_path = hf_hub_download(repo_id=f"HuangLab/{model_name}", filename="config.yaml")
             hf_hub_download(repo_id=f"HuangLab/{model_name}", filename="nucleus_vqgan.yaml")
             hf_hub_download(repo_id=f"HuangLab/{model_name}", filename="threshold_vqgan.yaml")