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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 notify(self, resource, root=None):
 """ Prepare notification for the resource to all interested observers. :rtype: list :param resource: the resource for which send a new notification :param root: deprecated :return: the list of transactions to be notified """

        ret = []
        if root is not None:
            resource_list = root.with_prefix_resource(resource.path)
        else:
            resource_list = [resource]
        for key in list(self._relations.keys()):
            if self._relations[key].transaction.resource in resource_list:
                if self._relations[key].non_counter > defines.MAX_NON_NOTIFICATIONS \
                        or self._relations[key].transaction.request.type == defines.Types["CON"]:
                    self._relations[key].transaction.response.type = defines.Types["CON"]
                    self._relations[key].non_counter = 0
                elif self._relations[key].transaction.request.type == defines.Types["NON"]:
                    self._relations[key].non_counter += 1
                    self._relations[key].transaction.response.type = defines.Types["NON"]
                self._relations[key].transaction.resource = resource
                del self._relations[key].transaction.response.mid
                del self._relations[key].transaction.response.token
                ret.append(self._relations[key].transaction)
        return ret