/usr/lib/python2.7/dist-packages/plotly/matplotlylib/mplexporter/ is in python-plotly 1.13.0+dfsg-1.
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/usr/lib/python2.7/dist-packages/plotly/matplotlylib/mplexporter/__init__.py
/usr/lib/python2.7/dist-packages/plotly/matplotlylib/mplexporter/_py3k_compat.py
/usr/lib/python2.7/dist-packages/plotly/matplotlylib/mplexporter/exporter.py
/usr/lib/python2.7/dist-packages/plotly/matplotlylib/mplexporter/renderers/
/usr/lib/python2.7/dist-packages/plotly/matplotlylib/mplexporter/renderers/__init__.py
/usr/lib/python2.7/dist-packages/plotly/matplotlylib/mplexporter/renderers/base.py
/usr/lib/python2.7/dist-packages/plotly/matplotlylib/mplexporter/renderers/fake_renderer.py
/usr/lib/python2.7/dist-packages/plotly/matplotlylib/mplexporter/renderers/vega_renderer.py
/usr/lib/python2.7/dist-packages/plotly/matplotlylib/mplexporter/renderers/vincent_renderer.py
/usr/lib/python2.7/dist-packages/plotly/matplotlylib/mplexporter/tools.py
/usr/lib/python2.7/dist-packages/plotly/matplotlylib/mplexporter/utils.py