What do you think about adding pprint to builtins so that you don't need to import it each time when debugging? (Or, alternatively, so that you don't need to add it to the top of every single file?) It seems kind of wrong, but the alternatives are bad also. I'm not sure why Python didn't do this themselves when they added breakpoint in 3.7.
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.
If you want to use it in all your modules, create a template/snippet so that it's imported at the top ofevery new file you create. Then it's obvious to every new engineer you hire as to what's going on, rather than having non-standard behavior everywhere without any obvious indications.
$ python -m pdb ...
(Pdb) help pp
pp expression
Pretty-print the value of the expression.
(Pdb) pp ...