dh-python software package provides Debian helper tools for packaging Python libraries and applications, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install dh-python
dh-python is installed in your system.
Make ensure the dh-python package were installed using the commands given below,
$ sudo dpkg-query -l | grep dh-python *
You will get with dh-python package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Python |
| Package | dh-python |
| Version | 2.20160818 |
| Description | Debian helper tools for packaging Python libraries and applications |
| Sub Section | Python |