/usr/ is in python3-petsc4py 3.7.0-3build2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/python3/
/usr/lib/python3/dist-packages/
/usr/lib/python3/dist-packages/petsc4py/
/usr/lib/python3/dist-packages/petsc4py/PETSc.py
/usr/lib/python3/dist-packages/petsc4py/__init__.py
/usr/lib/python3/dist-packages/petsc4py/__main__.py
/usr/lib/python3/dist-packages/petsc4py/include/
/usr/lib/python3/dist-packages/petsc4py/include/petsc4py/
/usr/lib/python3/dist-packages/petsc4py/include/petsc4py/PETSc.pxd
/usr/lib/python3/dist-packages/petsc4py/include/petsc4py/__init__.pxd
/usr/lib/python3/dist-packages/petsc4py/include/petsc4py/__init__.pyx
/usr/lib/python3/dist-packages/petsc4py/include/petsc4py/numpy.h
/usr/lib/python3/dist-packages/petsc4py/include/petsc4py/petsc4py.PETSc.h
/usr/lib/python3/dist-packages/petsc4py/include/petsc4py/petsc4py.PETSc_api.h
/usr/lib/python3/dist-packages/petsc4py/include/petsc4py/petsc4py.h
/usr/lib/python3/dist-packages/petsc4py/include/petsc4py/petsc4py.i
/usr/lib/python3/dist-packages/petsc4py/lib/
/usr/lib/python3/dist-packages/petsc4py/lib/PETSc.cpython-36m-x86_64-linux-gnu.so
/usr/lib/python3/dist-packages/petsc4py/lib/__init__.py
/usr/lib/python3/dist-packages/petsc4py/lib/petsc.cfg
/usr/lib/python3/dist-packages/petsc4py-3.7.0.egg-info
/usr/share/
/usr/share/doc/
/usr/share/doc/python3-petsc4py/
/usr/share/doc/python3-petsc4py/changelog.Debian.gz
/usr/share/doc/python3-petsc4py/copyright