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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def aggregate(self, instance, owner):
 """Given an instance and a class, aggregate together some panglers. Walks every class in the MRO of the `owner` class, including `owner`, collecting panglers exposed as `self.attr_name`. The resulting pangler will be bound to the provided `instance`. """


        try:
            p = self.pangler_factory.from_store(instance, self.id)
        except KeyError:
            pass
        else:
            return p
        p = self.pangler_factory(self.id)
        mro = inspect.getmro(owner)
        others = []
        for cls in mro:
            sub_p = getattr(cls, self.attr_name, None)
            if sub_p is None:
                continue
            others.append(sub_p)
        return p.combine(*others).stored_bind(instance)