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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 is_preemptible(self):
 """Filter by preemptible scheduling. :return: A list of Node objects. :rtype: ``list`` of :class:`Node` """

        nodes = []
        for node in self.nodes:
            if Kurz.is_preemtible(node):
                nodes.append(node)
        return self