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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 get_cpu_usage(self, cpu_id=0):
 """ Shows cpu usage in seconds, "cpu_id" is ignored. :returns: cpu usage in seconds """


        cpu_usage = yield from self._hypervisor.send('vm cpu_usage "{name}" {cpu_id}'.format(name=self._name, cpu_id=cpu_id))
        return int(cpu_usage[0])