/usr/lib/python3.4/test/badsyntax_future10.py is in libpython3.4-testsuite 3.4.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | from __future__ import absolute_import
"spam, bar, blah"
from __future__ import print_function
|