/usr/lib/pyshared/ is in python-mmtk 2.7.9-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/pyshared/python2.7/
/usr/lib/pyshared/python2.7/MMTK/
/usr/lib/pyshared/python2.7/MMTK/linux2/
/usr/lib/pyshared/python2.7/MMTK/linux2/MMTK_DCD.so
/usr/lib/pyshared/python2.7/MMTK/linux2/MMTK_deformation.so
/usr/lib/pyshared/python2.7/MMTK/linux2/MMTK_dynamics.so
/usr/lib/pyshared/python2.7/MMTK/linux2/MMTK_energy_term.so
/usr/lib/pyshared/python2.7/MMTK/linux2/MMTK_forcefield.so
/usr/lib/pyshared/python2.7/MMTK/linux2/MMTK_minimization.so
/usr/lib/pyshared/python2.7/MMTK/linux2/MMTK_restraints.so
/usr/lib/pyshared/python2.7/MMTK/linux2/MMTK_state_accessor.so
/usr/lib/pyshared/python2.7/MMTK/linux2/MMTK_surface.so
/usr/lib/pyshared/python2.7/MMTK/linux2/MMTK_trajectory.so
/usr/lib/pyshared/python2.7/MMTK/linux2/MMTK_trajectory_action.so
/usr/lib/pyshared/python2.7/MMTK/linux2/MMTK_trajectory_generator.so
/usr/lib/pyshared/python2.7/MMTK/linux2/MMTK_universe.so