$ sudo apt-get update
$ sudo apt-get install python-maas-client 

python-maas-client is installed in your system.

Make ensure the python-maas-client package were installed using the commands given below,

$ sudo dpkg-query -l | grep python-maas-client *

You will get with python-maas-client package name, version, architecture and description in a table

python-maas-client package basic information: