def display_timestamps_pair(time_m_2):
 if (len(time_m_2) == 0):
  return '(empty)'
 time_m_2 = np.array(time_m_2)
 return '({}, {})'.format(display_timestamps(time_m_2[:, 0]), display_timestamps(time_m_2[:, 1]))

def display_timestamps_pair ( time_m_2 ) : if ( len ( time_m_2 ) == 0 ) : return '(empty)' time_m_2 = np . array ( time_m_2 ) return '({}, {})' . format ( display_timestamps ( time_m_2 [ : , 0 ] ) , display_timestamps ( time_m_2 [ : , 1 ] ) )
takes a list of the following form: [ .