/usr/lib/python2.7/config-x86_64-linux-gnu/libpython2.7.so is in libpython2.7 2.7.11-7ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/config-x86_64-linux-gnu/../../x86_64-linux-gnu/libpython2.7.so.1