Update app.py

app.py

@@ -63,6 +63,9 @@ async def update_configs(dataset_name: str):
         return [], None, {"splits": []}
 
 async def update_splits(config_name: str, state: gr.State):
+    if state["splits"] is None:
+        return [], None, gr.DataFrame.update()
+
     splits_for_config = sorted(set([s["split"] for s in state["splits"] if s["config"] == config_name]))
     dataset_name = state["splits"][0]["dataset"] if state["splits"] else None
     dataset = await update_dataset(splits_for_config[0], config_name, dataset_name) if splits_for_config and dataset_name else gr.DataFrame.update()
@@ -89,8 +92,8 @@ with gr.Blocks() as demo:
     
     with gr.Row():
         dataset_name = gr.Dropdown(label="Dataset", interactive=True, allow_custom_value=True)
-        config = gr.Dropdown(label="Subset", interactive=True)
-        split = gr.Dropdown(label="Split", interactive=True)
+        config = gr.Dropdown(label="Subset", interactive=True, allow_custom_value=True)
+        split = gr.Dropdown(label="Split", interactive=True, allow_custom_value=True)
     
     with gr.Row():
         URLcenter = gr.Textbox(label="Dataset URL", placeholder="URL")