/usr/lib/x86_64-linux-gnu/pkgconfig/python2.pc is in python-dev 2.7.5-5ubuntu3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/pkgconfig/python.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/python.pc