Persist evaluations: write CSV locally and optionally push to Space repo when HF_TOKEN/SPACE_ID available

app.py

@@ -2,9 +2,14 @@ import csv
 import itertools
 import os
 from datetime import datetime
+import os
 from typing import Dict, List, Tuple
 
 import gradio as gr
+try:
+    from huggingface_hub import HfApi
+except Exception:  # optional dependency at runtime
+    HfApi = None  # type: ignore
 
 
 BASE_DIR = os.path.dirname(__file__)
@@ -141,6 +146,34 @@ def _append_evaluation(task_name: str, pair: Dict[str, str], scores: Dict[str, i
         row.update(scores)
         writer.writerow(row)
 
+    # Optionally push updated CSV to the Space repo if credentials are available
+    _try_push_to_hub(csv_path)
+
+
+def _try_push_to_hub(csv_path: str) -> None:
+    """Attempt to commit the CSV to the current Space repo if HF_TOKEN and SPACE_ID exist.
+    Safe no-op if huggingface_hub isn't available or env vars are missing.
+    """
+    if HfApi is None:
+        return
+    token = os.environ.get("HF_TOKEN") or os.environ.get("HUGGINGFACEHUB_API_TOKEN")
+    space_id = os.environ.get("SPACE_ID")
+    if not token or not space_id:
+        return
+    try:
+        api = HfApi(token=token)
+        rel_path = os.path.relpath(csv_path, BASE_DIR).replace(os.sep, "/")
+        api.upload_file(
+            path_or_fileobj=csv_path,
+            path_in_repo=rel_path,
+            repo_id=space_id,
+            repo_type="space",
+            commit_message=f"Update eval CSV: {rel_path} at {datetime.utcnow().isoformat()}",
+        )
+    except Exception:
+        # Silently ignore push errors to avoid breaking the UI flow
+        pass
+
 
 def on_task_change(task_name: str, _state_pairs: List[Dict[str, str]]):
     pairs = load_task(task_name)