I had set myself the target of implementing the Risch Algorithm (https://en.wikipedia.org/wiki/Risch_algorithm) in SymPy (3) but the event was so embarrassing I deleted my code and never published it publicly.

I’m not a programmer. I erred in trying to do a programmer’s job. Also, I discovered why Nicholas Nassim Taleb has the reputation for being rather uncharitable (but deep down I feel like I deserved it, because hey, I stated a mathematical untruth).