code: def get_symmetry_from_database(hall_number):
      
      _set_no_error()
  
      rotations = np.zeros((192, 3, 3), dtype='intc')
      translations = np.zeros((192, 3), dtype='double')
      num_sym = spg.symmetry_from_database(rotations, translations, hall_number)
      _set_error_message()
  
      if num_sym is None:
          return None
      else:
          return {'rotations':
                  np.array(rotations[:num_sym], dtype='intc', order='C'),
                  'translations':
                  np.array(translations[:num_sym], dtype='double', order='C')}
docs: Return symmetry operations corresponding to a Hall symbol.
  
      The Hall symbol is given by the serial number in between 1 and 530.
      The symmetry operations are given by a dictionary whose keys are
      'rotations' and 'translations'.
      If it fails, None is returned.