update

pcmdi_metrics/io/xcdat_dataset_io.py

@@ -11,15 +11,21 @@ def _find_key(
 ) -> str:
  try:
  key = xc.get_dim_keys(ds, axis)
- except Exception:
+ except Exception as e:
  axes = get_axis_list(ds)
  key_candidates = [k for k in axes if k.lower() in potential_names]
  if len(key_candidates) > 0:
  key = key_candidates[0]
  else:
- key_candidates = [k for k in axes if k.lower() in potential_names]
+ data_keys = get_data_list(ds)
+ key_candidates = [k for k in data_keys if k.lower() in potential_names]
  if len(key_candidates) > 0:
  key = key_candidates[0]
+ else:
+ all_keys = ", ".join(axes + data_keys)
+ print(
+ f"Error: Cannot find a proper key name for {axis} from keys:{all_keys} {e}"
+ )
  return key