Accumulating values in dictionary

[Zack]

On May 20, 10:38 am, Thomas Bellman <bell... at lysator.liu.se> wrote:
> Arnaud Delobelle <arno... at googlemail.com> wrote:
> > from collections import defaultdict
> > d = defaultdict(int) # That means the default value will be 0
> > for person in people:
> >     d[person.fav_food] += 1
>
> Ah!  I didn't think of using int as the factory function.  If you
> use this, then I believe the warning I gave about performance
> does not apply; my understanding is that calling built-in functions
> (like the int constructor) is fast.
>
> --
> Thomas Bellman,   Lysator Computer Club,   Linköping University,  Sweden
> "Beware of bugs in the above code; I have    !  bellman @ lysator.liu.se
>  only proved it correct, not tried it."      !  Make Love -- Nicht Wahr!

Arnaud, that is so badass re: int