$ sudo apt-get update
$ sudo apt-get install python-hachoir-subfile 

python-hachoir-subfile is installed in your system.

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

$ sudo dpkg-query -l | grep python-hachoir-subfile *

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

python-hachoir-subfile package basic information: