Debianize uses fpm (https://github.com/jordansissel/fpm) to create debian packages from python source directories. The only thing it really adds, is that debianize will also create packages for all depencencies that your source package has (install_requires). Debianize will only create a debian package from a python package. So you need a setup.py.
debianize.sh -m "nobody <nobody@example.com>" -i django -i buildthistoo
-m The maintainer string ("nobody <nobody@example.com>") (If different as defined in setup.py)
-i Using this flag makes following dependencies explicit. It will only
build dependencies listed in install_requires that match the regex
specified after -i. Use -i multiple times to specify multiple packages
-I Use this flag to ignore a dependencies from being built. Packages that
match the regex specified after -I. Use -I multiple times add more ignore
regexes.
-f full path to fpm binary to use.
-p full path to pip binary to use.
All flags are optional. Anything after an unknown flag has been encountered, will be passed to fpm as arguments. -i and -I are mutually exclusive.
If you've got a folder named upstart next to your setup.py, this folder
will be packaged as well, with the same version number as your package, but
adding a .d postfix to your package name.