/usr/lib/python2.7/dist-packages/fftw3f/wisdom.py is in python-fftw 0.2.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/fftw3f/../../../../share/pyshared/fftw3f/wisdom.py