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Check feature_names_in_ for sklearn.feature_extraction #20846

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Merged
merged 2 commits into from
Aug 26, 2021
Merged

Check feature_names_in_ for sklearn.feature_extraction #20846

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28e4566
Missing feature_names_in_ in tf-idf transformer's docstring
ogrisel Aug 26, 2021
e6c02cd
Merge branch 'main' into feature_names_in_-feature_extraction
ogrisel Aug 26, 2021
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6 changes: 6 additions & 0 deletions sklearn/feature_extraction/text.py
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Expand Up @@ -1486,6 +1486,12 @@ class TfidfTransformer(TransformerMixin, BaseEstimator):

.. versionadded:: 1.0

feature_names_in_ : ndarray of shape (`n_features_in_`,)
Names of features seen during :term:`fit`. Defined only when `X`
has feature names that are all strings.

.. versionadded:: 1.0

See Also
--------
CountVectorizer : Transforms text into a sparse matrix of n-gram counts.
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1 change: 0 additions & 1 deletion sklearn/tests/test_common.py
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Expand Up @@ -325,7 +325,6 @@ def test_check_n_features_in_after_fitting(estimator):

COLUMN_NAME_MODULES_TO_IGNORE = {
"compose",
"feature_extraction",
"model_selection",
}

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