Update filter.py

microsoft · Feb 19, 2021 · a72911e · a72911e
1 parent 50d5fcf
commit a72911e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/qlib/data/filter.py b/qlib/data/filter.py
@@ -354,7 +354,8 @@ def _getFilterSeries(self, instruments, fstart, fend):
         rule_expression_field_name = list(_features.keys())[0]
         all_filter_series = _features[rule_expression_field_name]
         return all_filter_series
-
+
+    @staticmethod
     def from_config(config):
         return ExpressionDFilter(
             rule_expression=config["rule_expression"],