download data only when it does not exist

run_prothgt_app.py

@@ -137,8 +137,11 @@ def generate_prediction_df(protein_ids, model_paths, model_config_paths, go_cate
     file_id = "18u1o2sm8YjMo9joFw4Ilwvg0-rUU0PXK"
     output = "data/prothgt-kg.pt"
 
-    url = f"https://drive.google.com/uc?id={file_id}"
-    print(f"Downloading file from {url}...")
+    if not os.path.exists(output):
+        url = f"https://drive.google.com/uc?id={file_id}"
+        print(f"Downloading file from {url}...")
+    else:
+        print(f"File already exists at {output}")
     try:
         gdown.download(url, output, quiet=False)
         print(f"File downloaded to {output}")