$ sudo apt-get update
$ sudo apt-get install python-libsss-nss-idmap 

python-libsss-nss-idmap is installed in your system.

Make ensure the python-libsss-nss-idmap package were installed using the commands given below,

$ sudo dpkg-query -l | grep python-libsss-nss-idmap *

You will get with python-libsss-nss-idmap package name, version, architecture and description in a table

python-libsss-nss-idmap package basic information: