/usr/lib/python2.7/dist-packages/sklearn/decomposition/ is in python-sklearn 0.19.1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/dist-packages/sklearn/decomposition/__init__.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/base.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/dict_learning.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/factor_analysis.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/fastica_.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/incremental_pca.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/kernel_pca.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/nmf.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/online_lda.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/pca.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/setup.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/sparse_pca.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/tests/
/usr/lib/python2.7/dist-packages/sklearn/decomposition/tests/__init__.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/tests/test_dict_learning.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/tests/test_factor_analysis.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/tests/test_fastica.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/tests/test_incremental_pca.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/tests/test_kernel_pca.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/tests/test_nmf.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/tests/test_online_lda.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/tests/test_pca.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/tests/test_sparse_pca.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/tests/test_truncated_svd.py
/usr/lib/python2.7/dist-packages/sklearn/decomposition/truncated_svd.py