Delete Method of the Descriptor Protocol
Explore the delete method in Python's descriptor protocol to control and restrict attribute deletion in objects. Understand how to enforce consistency by preventing invalid states, such as deleting essential attributes, through custom deletion logic typically applied in administrative permission cases.
Signature of the __delete__ method
The signature for the __delete__ method is simpler as opposed to the __get__ and __set__ methods, and it looks like this:
__delete__(self, instance)
Calling the __delete__ method
This method is called upon with the following statement, in which self would be the descriptor attribute, and instance would be the client object in this example:
del client.descriptor
...