Question

I have a question.

There are two classes: A and B. A creates object of type B. So from A, it is easy to access methods of B, but how can I access methods of object A from object B? I am trying to use bidirectional signal-slot mechanism in Qt. A can easily have a slot for a signal in B, but B cannot see signals in A.

I have a vague idea that somehow the creator class can be referenced as a ‘member’ while an object is being created, but I am not sure how to do code this.

Thanks in advance.

Answer 1

Pass the creator as an argument to the constructor:

class B(object):
    def __init__(self, creator):
        self._creator = creator   # or do something else with it

Use as:

class A(object):
    def somemethod(self):
        b = B(self)