code: def from_transformation_string(cls, transformation_string="a,b,c;0,0,0"):
          
          P, p = JonesFaithfulTransformation.parse_transformation_string(
              transformation_string)
          return cls(P, p)
docs: Construct SpaceGroupTransformation from its transformation string.
          :param P: matrix
          :param p: origin shift vector
          :return: