From 984338152e930edaab1fa6c630a41e89e4e54d71 Mon Sep 17 00:00:00 2001
From: Kernc <kerncece@gmail.com>
Date: Sat, 8 May 2021 04:07:12 +0200
Subject: [PATCH] Re-add `BayesSearchCV.best_score_` needed by some examples

Removed in 9461bfecc12c8cab7ae18a55e44e1d258b3c09c9
"Remove BayesSearchCV(iid=) parameter deprecated in sklearn 0.24 (#988)"
---
 skopt/searchcv.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/skopt/searchcv.py b/skopt/searchcv.py
index a37bc79a..fbf406f6 100644
--- a/skopt/searchcv.py
+++ b/skopt/searchcv.py
@@ -360,6 +360,12 @@ def _check_search_space(self, search_space):
                 "Search space should be provided as a dict or list of dict,"
                 "got %s" % search_space)
 
+    # copied for compatibility with 0.19 sklearn from 0.18 BaseSearchCV
+    @property
+    def best_score_(self):
+        check_is_fitted(self, 'cv_results_')
+        return self.cv_results_['mean_test_score'][self.best_index_]
+
     @property
     def optimizer_results_(self):
         check_is_fitted(self, '_optim_results')