def __invert__(self):
if self.is_degenerate:<EOL><INDENT>raise TransformNotInvertibleError("<STR_LIT>")<EOL><DEDENT>idet = <NUM_LIT:1.0> / self.determinant<EOL>sa, sb, sc, sd, se, sf, _, _, _ = self<EOL>ra = se * idet<EOL>rb = -sb * idet<EOL>rd = -sd * idet<EOL>re = sa * idet<EOL>return tuple.__new__(<EOL>Affine,<EOL>(ra, rb, -sc * ra - sf * rb, rd, re, -sc * rd - sf * re, <NUM_LIT:0.0>, <NUM_LIT:0.0>, <NUM_LIT:1.0>),<EOL>)<EOL>
Return the inverse transform.

        :raises: :except:`TransformNotInvertible` if the transform
            is degenerate.