/usr/lib/python3.7/config-3.7dm-x86_64-linux-gnu/libpython3.7.so is in libpython3.7-dbg 3.7.0~b3-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python3.7/config-3.7dm-x86_64-linux-gnu/../../x86_64-linux-gnu/libpython3.7dm.so