diff --git a/qlib/utils/resam.py b/qlib/utils/resam.py
index 8933b3a82..b121b6130 100644
--- a/qlib/utils/resam.py
+++ b/qlib/utils/resam.py
@@ -40,7 +40,7 @@ def parse_freq(freq: str) -> Tuple[int, str]:
         raise ValueError(
             "freq format is not supported, the freq should be like (n)month/mon, (n)week/w, (n)day/d, (n)minute/min"
         )
-    _count = int(match_obj.group(1) if match_obj.group(1) else "1")
+    _count = int(match_obj.group(1)) if match_obj.group(1) is None else 1
     _freq = match_obj.group(2)
     _freq_format_dict = {
         "month": "month",
diff --git a/qlib/workflow/record_temp.py b/qlib/workflow/record_temp.py
index 02a282035..f94a65510 100644
--- a/qlib/workflow/record_temp.py
+++ b/qlib/workflow/record_temp.py
@@ -88,11 +88,11 @@ class RecordTemp:
 
     def list(self):
         """
-        List the stored records.
+        List the supported artifacts.
 
         Return
         ------
-        A list of all the stored records.
+        A list of all the supported artifacts.
         """
         return []