Documentation is an integral part of API development and OpenAPI 3 is finally here to make that process a easier. By using drf-spectacular with Django REST Framework (DRF), your documentation will always stay close your actual API.
drf-spectacular works well out of the box, but also provides you with several easy ways to customize the generated OpenAPI 3. It is explicitly designed to work well for documentation (SwaggerUI, ReDoc) and automatic client generation.
Head over to Github or the Documentation for more information.