au.readAntennasFromCalPosition(xmlfile)
CASA <17>: au.readAntennasFromCalPosition('uid___A002_Xac5575_Xa587_delays_U_DA45_WET_antpos_result') Out[17]: array(['DA45', 'DA52', 'DV04', 'DV23', 'PM03'], dtype='|S4')