deprecate pos args

SeanApplebaum · SeanApplebaum · commit a8d1a175437f · 2021-03-19T16:21:17.000-04:00
diff --git a/sklearn/preprocessing/_data.py b/sklearn/preprocessing/_data.py
@@ -1637,6 +1637,7 @@ def __init__(self, degree=2, *, interaction_only=False, include_bias=True,
         self.order = order
 
     @staticmethod
+    @_deprecate_positional_args
     def _combinations(n_features, degree, interaction_only, include_bias):
         comb = (combinations if interaction_only else combinations_w_r)
         start = int(not include_bias)
