horizon defaults old

# a lot of code ommitted
class FilterAction():
    important_attribute = "I am important"

    def __init__(self, important_attribute=None):
        self.important_attribute = important_attribute or getattr(self, "important_attribute")


class MyGreatFilterAction(FilterAction):
    important_attribute = "I am not so important in this class"​​

    def print_important_attribute(self):
        print self.important_attribute

m = MyGreatFilterAction()
m.print_important_attribute()

m = MyGreatFilterAction("I can be important for this object")
m.print_important_attribute()
​