erikrose/oedipus — comment on commit e4c9d37e158ae3d754a197f00a73eb4f229b11b5
File:  line 0
By willkg:

I think this is better than what we had before because if there's a case where we need a filter_map and didn't define one, this will almost certainly kick up a ValueError since the value probably won't be a number. Ergo, you get a run-time error that should be pretty obvious with the thing that needs to be fixed in the traceback.

r+