/usr/lib/python2.7/config-x86_64-linux-gnu_d/ is in libpython2.7-dbg 2.7.15~rc1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/config-x86_64-linux-gnu_d/Makefile
/usr/lib/python2.7/config-x86_64-linux-gnu_d/Setup
/usr/lib/python2.7/config-x86_64-linux-gnu_d/Setup.config
/usr/lib/python2.7/config-x86_64-linux-gnu_d/Setup.local
/usr/lib/python2.7/config-x86_64-linux-gnu_d/config.c
/usr/lib/python2.7/config-x86_64-linux-gnu_d/config.c.in
/usr/lib/python2.7/config-x86_64-linux-gnu_d/install-sh
/usr/lib/python2.7/config-x86_64-linux-gnu_d/libpython2.7.a
/usr/lib/python2.7/config-x86_64-linux-gnu_d/libpython2.7.so
/usr/lib/python2.7/config-x86_64-linux-gnu_d/libpython2.7_d.a
/usr/lib/python2.7/config-x86_64-linux-gnu_d/libpython2.7_d.so
/usr/lib/python2.7/config-x86_64-linux-gnu_d/makesetup
/usr/lib/python2.7/config-x86_64-linux-gnu_d/python.o