/usr/lib/python3/dist-packages/skimage/util/ is in python3-skimage 0.10.1-2.
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..
/usr/lib/python3/dist-packages/skimage/util/__init__.py
/usr/lib/python3/dist-packages/skimage/util/_regular_grid.py
/usr/lib/python3/dist-packages/skimage/util/arraypad.py
/usr/lib/python3/dist-packages/skimage/util/dtype.py
/usr/lib/python3/dist-packages/skimage/util/montage.py
/usr/lib/python3/dist-packages/skimage/util/noise.py
/usr/lib/python3/dist-packages/skimage/util/shape.py
/usr/lib/python3/dist-packages/skimage/util/tests/
/usr/lib/python3/dist-packages/skimage/util/tests/test_arraypad.py
/usr/lib/python3/dist-packages/skimage/util/tests/test_dtype.py
/usr/lib/python3/dist-packages/skimage/util/tests/test_montage.py
/usr/lib/python3/dist-packages/skimage/util/tests/test_random_noise.py
/usr/lib/python3/dist-packages/skimage/util/tests/test_regular_grid.py
/usr/lib/python3/dist-packages/skimage/util/tests/test_shape.py
/usr/lib/python3/dist-packages/skimage/util/tests/test_unique_rows.py
/usr/lib/python3/dist-packages/skimage/util/unique.py