On Mon, Jul 30, 2018 at 12:20 PM Valerio Pachera <vale...@pbds.eu> wrote: > I was looking to substiture the cicle for e in new_d like this: > [ new_d[e].append(k) if e in new_d else new_d[e].append(k) for e in d[k] ] > but it can't work because 'new_d[e] = []' is missing.
Have a look at `dict.setdefault` and play around with it; I think it will help you do what you want. -- Zach _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
