/usr/lib/python3/dist-packages/sklearn/covariance/ is in python3-sklearn 0.19.1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/sklearn/covariance/__init__.py
/usr/lib/python3/dist-packages/sklearn/covariance/empirical_covariance_.py
/usr/lib/python3/dist-packages/sklearn/covariance/graph_lasso_.py
/usr/lib/python3/dist-packages/sklearn/covariance/outlier_detection.py
/usr/lib/python3/dist-packages/sklearn/covariance/robust_covariance.py
/usr/lib/python3/dist-packages/sklearn/covariance/shrunk_covariance_.py
/usr/lib/python3/dist-packages/sklearn/covariance/tests/
/usr/lib/python3/dist-packages/sklearn/covariance/tests/__init__.py
/usr/lib/python3/dist-packages/sklearn/covariance/tests/test_covariance.py
/usr/lib/python3/dist-packages/sklearn/covariance/tests/test_graph_lasso.py
/usr/lib/python3/dist-packages/sklearn/covariance/tests/test_robust_covariance.py