- p = P._charpoly_coeff(0)
- # The _charpoly_coeff function already adds the factor of
- # -1 to ensure that _charpoly_coeff(0) is really what
- # appears in front of t^{0} in the charpoly. However,
- # we want (-1)^r times THAT for the determinant.
+ p = P._charpoly_coefficients()[0]
+ # The _charpoly_coeff function already adds the factor of -1
+ # to ensure that _charpoly_coefficients()[0] is really what
+ # appears in front of t^{0} in the charpoly. However, we want
+ # (-1)^r times THAT for the determinant.