$ sudo apt-get update
$ sudo apt-get install python-pysnmp4-mibs 

python-pysnmp4-mibs is installed in your system.

Make ensure the python-pysnmp4-mibs package were installed using the commands given below,

$ sudo dpkg-query -l | grep python-pysnmp4-mibs *

You will get with python-pysnmp4-mibs package name, version, architecture and description in a table

python-pysnmp4-mibs package basic information: