/usr/lib/python2.7/dist-packages/sklearn/preprocessing/ 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/preprocessing/__init__.py
/usr/lib/python2.7/dist-packages/sklearn/preprocessing/_function_transformer.py
/usr/lib/python2.7/dist-packages/sklearn/preprocessing/data.py
/usr/lib/python2.7/dist-packages/sklearn/preprocessing/imputation.py
/usr/lib/python2.7/dist-packages/sklearn/preprocessing/label.py
/usr/lib/python2.7/dist-packages/sklearn/preprocessing/tests/
/usr/lib/python2.7/dist-packages/sklearn/preprocessing/tests/__init__.py
/usr/lib/python2.7/dist-packages/sklearn/preprocessing/tests/test_data.py
/usr/lib/python2.7/dist-packages/sklearn/preprocessing/tests/test_function_transformer.py
/usr/lib/python2.7/dist-packages/sklearn/preprocessing/tests/test_imputation.py
/usr/lib/python2.7/dist-packages/sklearn/preprocessing/tests/test_label.py