$ sudo apt-get update
$ sudo apt-get install python-sphinxcontrib-docbookre

python-sphinxcontrib-docbookre is installed in your system.

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

$ sudo dpkg-query -l | grep python-sphinxcontrib-docbookre*

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

python-sphinxcontrib-docbookre package basic information: