time as float since Jan 1, 0001?
roy at panix.com
Sat Feb 23 14:49:08 CET 2013
In article <mailman.2342.1361626870.2939.python-list at python.org>,
Mark Lawrence <breamoreboy at yahoo.co.uk> wrote:
> On 23/02/2013 13:29, Roy Smith wrote:
> > I'm working with matplotlib.plot_date(), which represents time as
> > "floats starting at January 1st, year 0001". Is there any
> > straight-forward way to get that out of a datetime?
> > datetime.toordinal() gives me the number of days since that epoch, but
> > as an integer. I figured it wouldn't be too hard to just do:
> > t.toordinal() + t.time().total_seconds()
> > except it turns out that only timedelta supports total_seconds(); time
> > doesn't!
> > I suppose I could do:
> > t.toordinal() + t.hour / 24.0 \
> > + t.minute / 1440.0 \
> > + t.second / 86400.0
> > but that's really ugly. Is there no cleaner way to do this conversion?
> IIRC you needn't bother, matplotlib will do all the conversions for you.
> In the highly likely case that I'm wrong this should help
Duh! I didn't get that far in the docs! Thanks, that makes life a lot
Still, it seems like allowing toordinal() and fromordinal() to handle
floats would be a useful addition :-)
More information about the Python-list