fix: cli show stat failed for single values

corrlib/cli.py

@@ -9,6 +9,7 @@ from .main import update_aliases
 from .meas_io import drop_cache as mio_drop_cache
 from .meas_io import load_record as mio_load_record
 import os
+from pyerrors import Corr
 from importlib.metadata import version
 
 
@@ -120,12 +121,14 @@ def stat(
         "--dataset",
         "-d",
         ),
-    record: str = typer.Argument(),
+    record_id: str = typer.Argument(),
     ) -> None:
     """
     Show the statistics of a given record.
     """
-    record = mio_load_record(path, record)[0]
+    record = mio_load_record(path, record_id)
+    if isinstance(record, Corr):
+        record = record[0]
     statistics = record.idl
     print(statistics)
     return