/usr/lib/python3/dist-packages/sklearn/datasets/tests/data/svmlight_invalid.txt is in python3-sklearn 0.17.0-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | python 2:2.5 10:-5.2 15:1.5
2.0 5:1.0 12:-3
3.0 20:27
|