Install python package man pages with pip
The package does not have a man page, see here. It's the Debian policy that requires that each program adds a man page. Hence, the package installs one for you.
As a side note
If you maintain your own package, you can use the directive data_files in your setup.py:
setup( ... data_files = [('man/man1', [path/to/your/manpage.1/'])], )If you would like to create a man page automatically for your program (if you are using argparse, take a look at my package man-utils.