FIX #7501 whats_new file updated

dokato · Dominik Krzeminski · commit fc337c5c3d2c · 2017-02-20T10:58:06.000+01:00
diff --git a/doc/whats_new.rst b/doc/whats_new.rst
@@ -153,6 +153,10 @@ Enhancements
 Bug fixes
 .........
 
+   - Fixed a bug where :class:`sklearn.ensemble.AdaBoostClassifier` throws
+     `ZeroDivisionError` while fitting data with single class labels.
+     :issue:`7501` by :user:`Dominik Krzeminski <dokato>`.
+
    - Fixed a bug where :class:`sklearn.linear_model.RandomizedLasso` and
      :class:`sklearn.linear_model.RandomizedLogisticRegression` breaks for
      sparse input.
diff --git a/sklearn/ensemble/weight_boosting.py b/sklearn/ensemble/weight_boosting.py
@@ -773,6 +773,7 @@ def predict_proba(self, X):
         normalizer = proba.sum(axis=1)[:, np.newaxis]
         normalizer[normalizer == 0.0] = 1.0
         proba /= normalizer
+
         return proba
 
     def staged_predict_proba(self, X):
