/usr/share/devhelp/books/python3.4 is in python3.4-doc 3.4.3-1ubuntu1~14.04.7.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/devhelp/books/../../doc/python3.4/html
/usr/share/devhelp/books/../../doc/python3.4/html