Have more basic operator classes

[chaithyagr]

Currently, we have GradParent and ProxParent base classes.

However, it would help to have a more generic Base Operator classes, particularly linear operator class like the OperatorBase in pysap-mri :

https://github.com/CEA-COSMIC/pysap-mri/blob/90c9d12687660a266f029680359a532efdb0db3f/mri/operators/base.py#L9

A similar base class with just op method could be used for Gradient and Proximity.

The reason why this will affect is cause I have some more generic proximities and gradients, which cant be inherited from GradParent and ProxParent, which misses the flow and also causes a lot of warnings.

Are you planning to submit a Pull Request?

• Yes
• No

[paquiteau]

Instead of checking the parents/ grand-parents and the whole family tree, why not check only if the child class has the correct methods availables ? Its easily doable using the built-ins hasattr and callable.