/usr/lib/python2.7/dist-packages/lldb-3.7/_lldb.so is in liblldb-3.7 1:3.7.1-2ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/lldb-3.7/../../../x86_64-linux-gnu/liblldb-3.7.so