code: def get_hall_number_from_symmetry(rotations, translations, symprec=1e-5):
      
  
      r = np.array(rotations, dtype='intc', order='C')
      t = np.array(translations, dtype='double', order='C')
      hall_number = spg.hall_number_from_symmetry(r, t, symprec)
      return hall_number
docs: Hall number is obtained from a set of symmetry operations.
  
      If it fails, None is returned.