/usr/lib/python2.7/dist-packages/ROOT.py is in libroot-bindings-python5.34 5.34.19+dfsg-1.2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/../../x86_64-linux-gnu/root5.34/ROOT.py