/usr/lib/python2.7/dist-packages/sage/interfaces/ is in sagemath-common 8.1-7ubuntu1.
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/usr/lib/python2.7/dist-packages/sage/interfaces/__init__.py
/usr/lib/python2.7/dist-packages/sage/interfaces/all.py
/usr/lib/python2.7/dist-packages/sage/interfaces/axiom.py
/usr/lib/python2.7/dist-packages/sage/interfaces/chomp.py
/usr/lib/python2.7/dist-packages/sage/interfaces/cleaner.py
/usr/lib/python2.7/dist-packages/sage/interfaces/ecm.py
/usr/lib/python2.7/dist-packages/sage/interfaces/expect.py
/usr/lib/python2.7/dist-packages/sage/interfaces/four_ti_2.py
/usr/lib/python2.7/dist-packages/sage/interfaces/fricas.py
/usr/lib/python2.7/dist-packages/sage/interfaces/frobby.py
/usr/lib/python2.7/dist-packages/sage/interfaces/gap.py
/usr/lib/python2.7/dist-packages/sage/interfaces/gap3.py
/usr/lib/python2.7/dist-packages/sage/interfaces/gap_workspace.py
/usr/lib/python2.7/dist-packages/sage/interfaces/genus2reduction.py
/usr/lib/python2.7/dist-packages/sage/interfaces/gfan.py
/usr/lib/python2.7/dist-packages/sage/interfaces/giac.py
/usr/lib/python2.7/dist-packages/sage/interfaces/gnuplot.py
/usr/lib/python2.7/dist-packages/sage/interfaces/gp.py
/usr/lib/python2.7/dist-packages/sage/interfaces/interface.py
/usr/lib/python2.7/dist-packages/sage/interfaces/jmoldata.py
/usr/lib/python2.7/dist-packages/sage/interfaces/kash.py
/usr/lib/python2.7/dist-packages/sage/interfaces/latte.py
/usr/lib/python2.7/dist-packages/sage/interfaces/lie.py
/usr/lib/python2.7/dist-packages/sage/interfaces/lisp.py
/usr/lib/python2.7/dist-packages/sage/interfaces/macaulay2.py
/usr/lib/python2.7/dist-packages/sage/interfaces/magma.py
/usr/lib/python2.7/dist-packages/sage/interfaces/magma_free.py
/usr/lib/python2.7/dist-packages/sage/interfaces/maple.py
/usr/lib/python2.7/dist-packages/sage/interfaces/mathematica.py
/usr/lib/python2.7/dist-packages/sage/interfaces/matlab.py
/usr/lib/python2.7/dist-packages/sage/interfaces/maxima.py
/usr/lib/python2.7/dist-packages/sage/interfaces/maxima_abstract.py
/usr/lib/python2.7/dist-packages/sage/interfaces/maxima_lib.py
/usr/lib/python2.7/dist-packages/sage/interfaces/mupad.py
/usr/lib/python2.7/dist-packages/sage/interfaces/mwrank.py
/usr/lib/python2.7/dist-packages/sage/interfaces/octave.py
/usr/lib/python2.7/dist-packages/sage/interfaces/phc.py
/usr/lib/python2.7/dist-packages/sage/interfaces/polymake.py
/usr/lib/python2.7/dist-packages/sage/interfaces/povray.py
/usr/lib/python2.7/dist-packages/sage/interfaces/process.pxd
/usr/lib/python2.7/dist-packages/sage/interfaces/psage.py
/usr/lib/python2.7/dist-packages/sage/interfaces/qepcad.py
/usr/lib/python2.7/dist-packages/sage/interfaces/qsieve.py
/usr/lib/python2.7/dist-packages/sage/interfaces/quit.py
/usr/lib/python2.7/dist-packages/sage/interfaces/r.py
/usr/lib/python2.7/dist-packages/sage/interfaces/read_data.py
/usr/lib/python2.7/dist-packages/sage/interfaces/rubik.py
/usr/lib/python2.7/dist-packages/sage/interfaces/sage0.py
/usr/lib/python2.7/dist-packages/sage/interfaces/scilab.py
/usr/lib/python2.7/dist-packages/sage/interfaces/singular.py
/usr/lib/python2.7/dist-packages/sage/interfaces/sympy.py
/usr/lib/python2.7/dist-packages/sage/interfaces/tab_completion.py
/usr/lib/python2.7/dist-packages/sage/interfaces/tachyon.py
/usr/lib/python2.7/dist-packages/sage/interfaces/tests.py
/usr/lib/python2.7/dist-packages/sage/interfaces/tides.py