fix subset params (#676)

microsoft · Jul 7, 2017 · 43d5037 · 43d5037
1 parent f7d190a
commit 43d5037
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/python-package/lightgbm/basic.py b/python-package/lightgbm/basic.py
@@ -848,6 +848,8 @@ def subset(self, used_indices, params=None):
         params : dict
             Other parameters
         """
+        if params is None:
+            params = self.params
         ret = Dataset(None, reference=self, feature_name=self.feature_name,
                       categorical_feature=self.categorical_feature, params=params)
         ret._predictor = self._predictor