/usr/lib/python2.7/dist-packages/sage/manifolds/ is in sagemath-common 8.1-7ubuntu1.
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/usr/lib/python2.7/dist-packages/sage/manifolds/__init__.py
/usr/lib/python2.7/dist-packages/sage/manifolds/all.py
/usr/lib/python2.7/dist-packages/sage/manifolds/chart.py
/usr/lib/python2.7/dist-packages/sage/manifolds/continuous_map.py
/usr/lib/python2.7/dist-packages/sage/manifolds/coord_func.py
/usr/lib/python2.7/dist-packages/sage/manifolds/coord_func_symb.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/__init__.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/affine_connection.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/automorphismfield.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/automorphismfield_group.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/chart.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/curve.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/diff_form.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/diff_form_module.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/diff_map.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/integrated_curve.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/levi_civita_connection.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/manifold.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/manifold_homset.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/metric.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/multivector_module.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/multivectorfield.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/real_line.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/scalarfield.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/scalarfield_algebra.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/tangent_space.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/tangent_vector.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/tensorfield.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/tensorfield_module.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/tensorfield_paral.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/vectorfield.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/vectorfield_module.py
/usr/lib/python2.7/dist-packages/sage/manifolds/differentiable/vectorframe.py
/usr/lib/python2.7/dist-packages/sage/manifolds/manifold.py
/usr/lib/python2.7/dist-packages/sage/manifolds/manifold_homset.py
/usr/lib/python2.7/dist-packages/sage/manifolds/point.py
/usr/lib/python2.7/dist-packages/sage/manifolds/scalarfield.py
/usr/lib/python2.7/dist-packages/sage/manifolds/scalarfield_algebra.py
/usr/lib/python2.7/dist-packages/sage/manifolds/structure.py
/usr/lib/python2.7/dist-packages/sage/manifolds/subset.py
/usr/lib/python2.7/dist-packages/sage/manifolds/utilities.py