[Tutor] model methods in Django

[Matthew Ngaha]

 im following the official docs and after learning Python im sure of
how methods work, but the model example on the beginners guide has me
really confused.

The model definition is omitted but can anyone explain how this methed
(was_published_recently) is given these attributes:

class Poll(models.Model):
    # ...
    def was_published_recently(self):
        return self.pub_date >= timezone.now() - datetime.timedelta(days=1)
    was_published_recently.admin_order_field = 'pub_date'
    was_published_recently.boolean = True
    was_published_recently.short_description = 'Published recently?'

are the names of the attributes already attached to these
functions/methods, or are they being created on the fly with whatever
name you want? As i am unable to comprehend what is going on, i dont
really have a clue as to what each definition is doing and how it
affects the model, even after reading this section of the docs over
and over again im still lost.