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A very common pattern in a Django Project is to have some kind of 'model-type' relationship, where you have some kind of object that can only belong to one of the types defined in the database.
It is often necessary to differentiate between an argument that has not been provided, and an argument provided with the value `None`. For that purpose, we create what's called a 'sentinel value'.
In this post, you will learn how to create a Celery task inside a Django project in a Docker container. Sounds awesome, right?
