[Python-Dev] datetime nanosecond support (ctd?)

[Antoine Pitrou]

I think strftime / strptime support is a low-priority concern on this
topic, and can probably be discussed independently of the core
nanosecond support.

Regards

Antoine.


On Thu, 11 Dec 2014 11:14:27 -0800
Guido van Rossum <guido at python.org> wrote:
> Another issue to consider here is that parsing and printing should be
> symmetrical. The %f format gobbles up exactly 6 digits.
> 
> Finally, strptime and strftime are not invented by Python, the same
> functions with (mostly) the same format characters are defined by other
> languages. Is there not a single other language that has added support for
> nanoseconds to its strftime/strptime? (I wouldn't be surprised if there
> wasn't -- while computer clocks have a precision in nanoseconds, that
> doesn't mean they are that *accurate* at all (even with ntpd running).
> 
> On Thu, Dec 11, 2014 at 10:33 AM, Skip Montanaro <skip.montanaro at gmail.com>
> wrote:
> 
> > On Thu, Dec 11, 2014 at 11:58 AM, Matthieu Bec <mdcb808 at gmail.com> wrote:
> > > ...or keep using "%f" if acceptable...
> >
> > That might be a problem. While it will probably work most of the time,
> > there are likely to be situations where the caller assumes it
> > generates a six-digit string. I did a little poking around. It seems
> > like "%N" isn't used.
> >
> > Skip
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> 
>