/usr/lib/python3/dist-packages/sklearn/manifold/ is in python3-sklearn 0.19.1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/sklearn/manifold/__init__.py
/usr/lib/python3/dist-packages/sklearn/manifold/isomap.py
/usr/lib/python3/dist-packages/sklearn/manifold/locally_linear.py
/usr/lib/python3/dist-packages/sklearn/manifold/mds.py
/usr/lib/python3/dist-packages/sklearn/manifold/setup.py
/usr/lib/python3/dist-packages/sklearn/manifold/spectral_embedding_.py
/usr/lib/python3/dist-packages/sklearn/manifold/t_sne.py
/usr/lib/python3/dist-packages/sklearn/manifold/tests/
/usr/lib/python3/dist-packages/sklearn/manifold/tests/__init__.py
/usr/lib/python3/dist-packages/sklearn/manifold/tests/test_isomap.py
/usr/lib/python3/dist-packages/sklearn/manifold/tests/test_locally_linear.py
/usr/lib/python3/dist-packages/sklearn/manifold/tests/test_mds.py
/usr/lib/python3/dist-packages/sklearn/manifold/tests/test_spectral_embedding.py
/usr/lib/python3/dist-packages/sklearn/manifold/tests/test_t_sne.py