Concise way to getattr() and use it if not None in Python

Question

I am finding myself doing the following a bit too often:

attr = getattr(obj, 'attr', None) if attr is not None:     attr()     # Do something, either attr(), or func(attr), or whatever else:     # Do something else 

Is there a more pythonic way of writing that? Is this better? (At least not in performance, IMO.)

try:     obj.attr() # or whatever except AttributeError:     # Do something else 

Answer 1

Since you are calling the attr, you could just do:

def default_action():     # do something else  action = getattr(obj, 'attr', default_action)  action()