the Gravity of Python 2

[Kushal Kumaran]

Roy Smith <roy at panix.com> writes:

> In article <mailman.5231.1389240235.18130.python-list at python.org>,
>  Chris Angelico <rosuav at gmail.com> wrote:
>
>> On Thu, Jan 9, 2014 at 2:35 PM, Roy Smith <roy at panix.com> wrote:
>> >> Yes, it *is* simple. It *is* easy. I've been working with pure-UTC
>> >> times (either called time_t, or TIMESTAMP WITH TIME ZONE, or even just
>> >> float) for decades. Like with so many other things, the easiest
>> >> solution is also the best, because you can just work with one stable
>> >> representation and abstraction on the inside, with conversions to/from
>> >> it at the boundaries. It IS that easy.
>> >
>> > Please show me the simple code to obtain an aware UTC datetime
>> > representing the current time.
>> 
>> In Pike:
>> time();
>> 
>> In PostgreSQL:
>> SELECT now();
>> 
>> In C:
>> time(0);
>> 
>> All of these give a value in UTC.
>
> None of which answer my question.  How, in Python, do you get an aware 
> UTC datetime object?  I know how to get a numeric representation of the 
> time as the number of seconds since the Unix epoch.  That's not what I 
> asked.
>

My local copy of the python 3.2.3 docs says:

classmethod datetime.utcnow()

    Return the current UTC date and time, with tzinfo None. This is like
    now(), but returns the current UTC date and time, as a naive
    datetime object. An aware current UTC datetime can be obtained by
    calling datetime.now(timezone.utc). See also now().

Hope this helps.

>> So maybe the key is to use utcfromtimestamp()? I don't know.
>
> So, I'm really confused what point you're trying to make.  You started 
> out arguing that I should be using aware datetimes instead of naive 
> datetimes.  I said that the reason I don't use aware datetimes is 
> because they're so much more difficult to generate.  You said they were 
> simple to generate.
>
> So, I'd like to see your code which generates an aware UTC datetime 
> object in Python.  And then we can argue about whether it's simple or 
> not :-)

-- 
regards,
kushal
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