/usr/lib/python2.7/dist-packages/mpl_toolkits/axisartist/ is in python-matplotlib 2.0.0+dfsg1-2.
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/usr/lib/python2.7/dist-packages/mpl_toolkits/axisartist/__init__.py
/usr/lib/python2.7/dist-packages/mpl_toolkits/axisartist/angle_helper.py
/usr/lib/python2.7/dist-packages/mpl_toolkits/axisartist/axis_artist.py
/usr/lib/python2.7/dist-packages/mpl_toolkits/axisartist/axisline_style.py
/usr/lib/python2.7/dist-packages/mpl_toolkits/axisartist/axislines.py
/usr/lib/python2.7/dist-packages/mpl_toolkits/axisartist/clip_path.py
/usr/lib/python2.7/dist-packages/mpl_toolkits/axisartist/floating_axes.py
/usr/lib/python2.7/dist-packages/mpl_toolkits/axisartist/grid_finder.py
/usr/lib/python2.7/dist-packages/mpl_toolkits/axisartist/grid_helper_curvelinear.py