Monkeypatching in one application is maybe okay. You really want pprint in builtins, fine, who is it really hurting? Monkeypatching in a library like fastcore

Monkeypatching in one application is maybe okay. You really want pprint in builtins, fine, who is it really hurting? Monkeypatching in a library like fastcore that many other people use is really bad. All sorts of bugs and incompatibilities will happen down the road, as software becomes dependent on your monkeypatch without anyone realizing it.