$ sudo apt-get update
$ sudo apt-get install python-pykcs11 

python-pykcs11 is installed in your system.

Make ensure the python-pykcs11 package were installed using the commands given below,

$ sudo dpkg-query -l | grep python-pykcs11 *

You will get with python-pykcs11 package name, version, architecture and description in a table

python-pykcs11 package basic information: