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

question from:https://stackoverflow.com/questions/2428557/concise-way-to-getattr-and-use-it-if-not-none-in-python

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()