$ sudo apt-get update
$ sudo apt-get install python-django-crispy-forms 

python-django-crispy-forms is installed in your system.

Make ensure the python-django-crispy-forms package were installed using the commands given below,

$ sudo dpkg-query -l | grep python-django-crispy-forms *

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

python-django-crispy-forms package basic information: