/usr/lib/python3/dist-packages/numpy/f2py/ is in python3-numpy 1:1.13.3-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/numpy/f2py/__init__.py
/usr/lib/python3/dist-packages/numpy/f2py/__main__.py
/usr/lib/python3/dist-packages/numpy/f2py/__version__.py
/usr/lib/python3/dist-packages/numpy/f2py/auxfuncs.py
/usr/lib/python3/dist-packages/numpy/f2py/capi_maps.py
/usr/lib/python3/dist-packages/numpy/f2py/cb_rules.py
/usr/lib/python3/dist-packages/numpy/f2py/cfuncs.py
/usr/lib/python3/dist-packages/numpy/f2py/common_rules.py
/usr/lib/python3/dist-packages/numpy/f2py/crackfortran.py
/usr/lib/python3/dist-packages/numpy/f2py/diagnose.py
/usr/lib/python3/dist-packages/numpy/f2py/f2py2e.py
/usr/lib/python3/dist-packages/numpy/f2py/f2py_testing.py
/usr/lib/python3/dist-packages/numpy/f2py/f90mod_rules.py
/usr/lib/python3/dist-packages/numpy/f2py/func2subr.py
/usr/lib/python3/dist-packages/numpy/f2py/info.py
/usr/lib/python3/dist-packages/numpy/f2py/rules.py
/usr/lib/python3/dist-packages/numpy/f2py/setup.py
/usr/lib/python3/dist-packages/numpy/f2py/src/
/usr/lib/python3/dist-packages/numpy/f2py/src/fortranobject.c
/usr/lib/python3/dist-packages/numpy/f2py/src/fortranobject.h
/usr/lib/python3/dist-packages/numpy/f2py/use_rules.py