On Wed, Jun 29, 2016, at 13:11, Alexander Belopolsky wrote:
> I came across this blog post [1] by Dan Nguyen and wanted to share it
> with
> the group.
> 
> [1]:
> http://blog.danwin.com/pep-495-and-the-hardest-problem-in-computer-science/


But if I were asking that question in real life, I'd say "Before or
after the time change?", which is understood by all to be an upcoming
time change from DST to non-DST. A more compelling argument is that it
applies equally to *other* time changes such as a region adopting a
different time zone offset.

But all of this is only necessary because of the peculiar way that
Python conceptualizes "naive" local times as independent of any zone. Of
course, naive times that care about the 'fold' are only portable to
other timezones that have a fold at the same local time - e.g. among US
timezones (which all have a fold from 2AM to 1AM local) but not EU
timezones (which all transition at the same UTC time and therefore
different local times).
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