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scikit-learn__scikit-learn-13779

Based on the issue description, I need to provide a patch for scikit-learn's VotingClassifier/VotingRegressor. The bug is that when sample_weight is passed and an estimator is set to None, the fit method fails because it doesn't check for…

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Content

Based on the issue description, I need to provide a patch for scikit-learn's VotingClassifier/VotingRegressor. The bug is that when `sample_weight` is passed and an estimator is set to `None`, the fit method fails because it doesn't check for `None` estimators before checking sample_weight support.

From my knowledge of scikit-learn's codebase, the issue is in `sklearn/ensemble/_voting.py`. The `fit` method checks if estimators support `sample_weight` but doesn't filter out `None` estimators first.

Here's the patch:

--- a/sklearn/ensemble/_voting.py
+++ b/sklearn/ensemble/_voting.py
@@ -78,7

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