[Tutor] Collating date data from a csv file

[boB Stepp]

On Wed, May 8, 2019 at 10:09 PM Cameron Simpson <cs at cskk.id.au> wrote:
>
> A defaultdict is a dict which magicly makes missing elements when they
> get access, using a factory function you supply. Here we're using "int"
> as that factory, as int() returns zero.

Is int() guaranteed to always return zero as Python versions progress?
 More importantly, perhaps, where would I go to look to find the
answer to this question myself?


-- 
boB