/usr/lib/x86_64-linux-gnu/libpython3.4dm.so.1 is in libpython3.4-dbg 3.4.0-2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libpython3.4dm.so.1.0
/usr/lib/x86_64-linux-gnu/libpython3.4dm.so.1.0