/usr/share/binfmts/python3.4 is in python3.4-minimal 3.4.0-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | package python3.4
interpreter /usr/bin/python3.4
magic \xee\x0c\x0d\x0a
|