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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_partition(self, org_name, part_name=None):
 """send get partition request to the DCNM. :param org_name: name of organization :param part_name: name of partition """

        if part_name is None:
            part_name = self._part_name
        url = self._update_part_url % (org_name, part_name)
        res = self._send_request("GET", url, '', 'partition')
        if res and res.status_code in self._resp_ok:
            return res.json()