/usr/lib/python2.7/dist-packages/tracrpc/json_rpc.py is in trac-xmlrpc 1.1.2+r10706-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/tracrpc/../../../../share/pyshared/tracrpc/json_rpc.py