Drupal can be customized to do almost anything. It was built ground up with the intent of using a wide variety of small modules to get the exact result wanted instead of just the most common solutions.
Drupal is not easy to get into and out of the box doesn't offer much. To get Drupal doing what you want it to, modules are required. To get modules, an understanding of how Drupal works is required. And that takes time.
WP has grown past being just a blogging platform and as such, it's not as lightweight as it used to be. It's also considerably more complex due to many more customization options compared to other solutions.
Django CMS project is a large and complex project, comparable to Wordpress. As such, it may be too much for a simple personal blog considering that it has many features that may never be used in that particular occasion.
Technical skill is required to set up the webserver, choosing a platform, template language, etc. It's on a different level than Wordpress, but you get a huge amount of freedom and flexibility if you can manage the front-end coding.
MongoDB is required to be up and running and a Yeoman generator is used to generate the application. Although the prompt based start-up in the command line helps you a lot, it still can be hard for someone inexperienced with NPM and Yeoman.