Django is the most popular Python web framework designed to help developers build secure, scalable and maintainable web applications. Django can be installed system-wide or in a Python virtual environment using pip. Django packages are included in the official Debian repositories and can be installed using the apt package manager. This is the easiest method to install Django on Debian 9, but not as flexible as installing in a virtual environment. Also, the version included in the repositories is always several releases behind the latest version of Django.