fixed: Starting with pandas version 3.0 all arguments of to_hdf except for the argument 'path_or_buf' will be keyword-only

stand/utils/dfh.py

@@ -41,7 +41,7 @@ def dump_non_empty_df(df, fn, key="data"):
         print("<<< skip dumping empty dataframe")
         return
     print(f"<<< dump dataframe to {fn}")
-    df.to_hdf(fn, key)
+    df.to_hdf(fn, key=key)
     backup(df, fn, key) #TODO: test then remove