[Datetime-SIG] What's are the issues?

[Lennart Regebro]

On Wed, Jul 29, 2015 at 6:25 PM, Tim Peters <tim.peters at gmail.com> wrote:
> Lennart, you replied to a quote from me which was specifically and
> only talking about timezone conversions.  Here it is, the only part
> you quoted:
>
>> But, as the docs have always pointed out, it (specifically .fromutc(),
>> which is at the base of all relevant calculations) doesn't even try to
>> handle transitions due to _other_ causes.  The only other such cause
>> I'm aware of is when a timezone's _base_ offset from UTC changes (not
>> a temporary DST transition, the timezone's "standard" offset changes
>> permanently (meaning until someone decides to change it again)).

Are you saying that conversions between time zones are wrong!?

> Silly me - I
> thought you were asking about DST conversions

A don't view a DST change as a conversion, perhaps that's the
communication issue here.

> Here's you. talking about conversion when the base UTC offset changes:
>
>> This will be handled in the exact same way as DST changes, and if
>> this is incorrect, then reasonably, so is the DST handling.
>> What is "incorrect" here is of course a matter of opinion.

No, that's not a conversion, that ooccurs within the same time zone.

//Lennart