code: def get_pointgroup(rotations):
      
      _set_no_error()
  
      # (symbol, pointgroup_number, transformation_matrix)
      pointgroup = spg.pointgroup(np.array(rotations, dtype='intc', order='C'))
      _set_error_message()
      return pointgroup
docs: Return point group in international table symbol and number.
  
      The symbols are mapped to the numbers as follows:
      1   "1    "
      2   "-1   "
      3   "2    "
      4   "m    "
      5   "2/m  "
      6   "222  "
      7   "mm2  "
      8   "mmm  "
      9   "4    "
      10  "-4   "
      11  "4/m  "
      12  "422  "
      13  "4mm  "
      14  "-42m "
      15  "4/mmm"
      16  "3    "
      17  "-3   "
      18  "32   "
      19  "3m   "
      20  "-3m  "
      21  "6    "
      22  "-6   "
      23  "6/m  "
      24  "622  "
      25  "6mm  "
      26  "-62m "
      27  "6/mmm"
      28  "23   "
      29  "m-3  "
      30  "432  "
      31  "-43m "
      32  "m-3m "