After using PLY in production and (afterwards) toying with Parsec for a side project, I could never go back to PLY. Even aside from PLY's obvious flaws (docstri

After using PLY in production and (afterwards) toying with Parsec for a side project, I could never go back to PLY. Even aside from PLY's obvious flaws (docstrings as code, mutation instead of returns, ample use of python magic backstage...), Parsec wins by being more configurabile and composable. Whoever is maintaining my PLY mess now might get a handle on it faster than they could learn Haskell, but probably not by much.