Check to see if you already have it installed: Preferences → Package Control → Package Control: List Packages
. It won't show up if you just do Preferences → Package Control → Package Control: Djaneiro
(note the spelling). If it's not installed yet, choose Preferences → Package Control → Package Control: Install → Djaneiro
. It should work perfectly fine on Sublime Text 4.
I also highly recommend checking out Anaconda
(not at all related to the Anaconda Python distribution). Once it's set up properly, it's incredibly useful. Keep in mind that Djaneiro was last updated 5 years ago, and most of the code is from 8-11 years ago. An awful lot has changed in Django since then.