django-prepared-properties | Declarative annotations and prefetches for Django models | Data Labeling library

django-prepared-properties is a Python library typically used in Artificial Intelligence, Data Labeling applications. django-prepared-properties has no bugs, it has no vulnerabilities, it has build file available and it has low support. However django-prepared-properties has a Non-SPDX License. You can download it from GitHub.

Declarative annotations and prefetches for Django models. We often find ourselves writing a lot of quite complex annotations and prefetches. While these are used across the project, the logic that defines them is kind of hidden in a queryset method (or more of them, if the annotations rely on eachother). If there’s a default/naive implementation as a property, that logic is held in a completely different place. Using these annotations requires you to call each of those queryset methods, which quickly becomes a bit of a mess. This package attempts to solve this by allowing you to define annotations and prefetches as prepared properties, so you can add them to you querysets by referencing the class attribute. The queryset prepare method resolves annotation dependencies and builds the correct queryset for you. Requires python 3.6 and django 2.2. It probably works on django 3, but I haven’t tried it (PRs welcome <3).