Found the references although I'd never suggest an attempt at 30+ years of age it has been done I have provided 3 references the account is from the St. Lewis Zoo. I was mistaken the 40 year old produced eggs but they were not fertile.
Alex

R. Goellner of the St Lewis zoo reported on a pair of females brought to the zoo as adults in 1947 and reproducing a healthy clutch in 1979 after 32 years in captivity.

ref hatching techniques for reptile eggs at the St. Lewis Zoo.

A second female also brought in as an adult in 1961 produced fertile eggs in 1989 (20 years), and infertile clutch in 2001 (40 years)

ref. Ettling J 1990 An overview of amphibian and reptile reproduction at the St. Lewis Zoological Park.

ref. Barker and Barker Ball Pythons 2006 pp. 217