Delete redundant copy() code to speed up (#1732)

Delete redundant copy() code to speed up Co-authored-by: Linlang Lv (iSoftStone Information) <[email protected]>
microsoft · May 17, 2024 · 2ae4be4 · 2ae4be4
1 parent 6ed83f7
commit 2ae4be4
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/qlib/data/data.py b/qlib/data/data.py
@@ -536,7 +536,6 @@ def get_column_names(fields):
         """
         if len(fields) == 0:
             raise ValueError("fields cannot be empty")
-        fields = fields.copy()
         column_names = [str(f) for f in fields]
         return column_names