Is there a way to decorate a class injecting a parent class?

Question

I have a base class A, and a decorator behavior. Both has different behaviors but sometimes it can be used at the same time.

There is to implement a new class decorator new_behavior that applies behavior and "inject" A as a parent class?

Something like this:

@new_behavior
class B:
    ...

So B will behave just like if it was declared like class B(A): but B also inhirts all @behavior behaviors?