/usr/share/pyshared/matplotlib/tests/ is in python-matplotlib 1.3.1-1ubuntu5.
This file is owned by root:root, with mode 0o755.
..
/usr/share/pyshared/matplotlib/tests/__init__.py
/usr/share/pyshared/matplotlib/tests/mpltest.ttf
/usr/share/pyshared/matplotlib/tests/test_agg.py
/usr/share/pyshared/matplotlib/tests/test_animation.py
/usr/share/pyshared/matplotlib/tests/test_arrow_patches.py
/usr/share/pyshared/matplotlib/tests/test_artist.py
/usr/share/pyshared/matplotlib/tests/test_axes.py
/usr/share/pyshared/matplotlib/tests/test_backend_pdf.py
/usr/share/pyshared/matplotlib/tests/test_backend_pgf.py
/usr/share/pyshared/matplotlib/tests/test_backend_qt4.py
/usr/share/pyshared/matplotlib/tests/test_backend_svg.py
/usr/share/pyshared/matplotlib/tests/test_basic.py
/usr/share/pyshared/matplotlib/tests/test_bbox_tight.py
/usr/share/pyshared/matplotlib/tests/test_cbook.py
/usr/share/pyshared/matplotlib/tests/test_coding_standards.py
/usr/share/pyshared/matplotlib/tests/test_collections.py
/usr/share/pyshared/matplotlib/tests/test_colorbar.py
/usr/share/pyshared/matplotlib/tests/test_colors.py
/usr/share/pyshared/matplotlib/tests/test_compare_images.py
/usr/share/pyshared/matplotlib/tests/test_contour.py
/usr/share/pyshared/matplotlib/tests/test_dates.py
/usr/share/pyshared/matplotlib/tests/test_delaunay.py
/usr/share/pyshared/matplotlib/tests/test_dviread.py
/usr/share/pyshared/matplotlib/tests/test_figure.py
/usr/share/pyshared/matplotlib/tests/test_image.py
/usr/share/pyshared/matplotlib/tests/test_legend.py
/usr/share/pyshared/matplotlib/tests/test_lines.py
/usr/share/pyshared/matplotlib/tests/test_mathtext.py
/usr/share/pyshared/matplotlib/tests/test_mlab.py
/usr/share/pyshared/matplotlib/tests/test_patches.py
/usr/share/pyshared/matplotlib/tests/test_path.py
/usr/share/pyshared/matplotlib/tests/test_patheffects.py
/usr/share/pyshared/matplotlib/tests/test_pickle.py
/usr/share/pyshared/matplotlib/tests/test_png.py
/usr/share/pyshared/matplotlib/tests/test_rcparams.py
/usr/share/pyshared/matplotlib/tests/test_rcparams.rc
/usr/share/pyshared/matplotlib/tests/test_sankey.py
/usr/share/pyshared/matplotlib/tests/test_scale.py
/usr/share/pyshared/matplotlib/tests/test_simplification.py
/usr/share/pyshared/matplotlib/tests/test_spines.py
/usr/share/pyshared/matplotlib/tests/test_streamplot.py
/usr/share/pyshared/matplotlib/tests/test_subplots.py
/usr/share/pyshared/matplotlib/tests/test_table.py
/usr/share/pyshared/matplotlib/tests/test_text.py
/usr/share/pyshared/matplotlib/tests/test_ticker.py
/usr/share/pyshared/matplotlib/tests/test_tightlayout.py
/usr/share/pyshared/matplotlib/tests/test_transforms.py
/usr/share/pyshared/matplotlib/tests/test_triangulation.py
/usr/share/pyshared/matplotlib/tests/test_ttconv.py