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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_pointgroup(rotations):
 """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 " """

    _set_no_error()

    # (symbol, pointgroup_number, transformation_matrix)
    pointgroup = spg.pointgroup(np.array(rotations, dtype='intc', order='C'))
    _set_error_message()
    return pointgroup