Get PMT with global pmt_id

def pmt_with_id(self, pmt_id):
        """Get PMT with global pmt_id"""
        try:
            return self.pmts[self._pmt_index_by_pmt_id[pmt_id]]
        except KeyError:
            raise KeyError("No PMT found for ID: {0}".format(pmt_id))