On Mon, Feb 25, 2008 at 9:20 AM, Joel B. Mohler <[EMAIL PROTECTED]> wrote:
>
>
> On Monday 25 February 2008 10:56, William Stein wrote:
> > On Mon, Feb 25, 2008 at 7:49 AM, Joel B. Mohler <[EMAIL PROTECTED]>
> wrote:
> > > Hi,
> > >
> > > I just noticed that the timeit short-cut seems more broken than normal
> > > (at least I think this worked previous to 2.10.2:
> > > sage: R.<x>=ZZ[]
> > > sage: f=x^2-1
> > > sage: timeit f.factor()
> > > ------------------------------------------------------------
> > > File "<ipython console>", line 1
> > > timeit f.factor()
> > > ^
> > > <type 'exceptions.SyntaxError'>: invalid syntax
> > >
> > > The ipython native %timeit still works though.
> > >
> > > Is this breakage intentional? trac ticket warranted?
> >
> > If enabled Ipython will do automagic and just turn
> > "timeit foo" into "%timeit foo" if it happens that there
> > is no timeit symbol defined in the global namespace.
> > Sage-2.10.2 defines a timeit function which I think
> > is much better for Sage than the timeit that is builtin
> > to IPython. In particular the one in Sage plays very
> > well with the Sage preparser but the one in Ipython
> > doesn't. Also, I think it is easier to pass options (in
> > my opinion) since the Sage timeit is just a usual function.
> >
> > You should use it like any function call,
> > and pass it a string:
> >
> > sage: R.<x>=ZZ[]
> > sage: f=x^2-1
> > sage: timeit('f.factor()')
> > 5 loops, best of 3: 133 µs per loop
>
> I see. I'm wondering if it might also be appropriate to define a new 'time'
> function that works analogously. It's a bit startling to see these two --
It might be. I don't like the time function as it is written now, since it's
done with the preparser and doesn't work when it isn't the first thing on
a line, which is annoying.
sage: 2 + 2; time 2 + 2
------------------------------------------------------------
File "<ipython console>", line 1
Integer(2) + Integer(2); time Integer(2) + Integer(2)
^
<type 'exceptions.SyntaxError'>: invalid syntax
Hey, Nick, want to fix that? ;-)
> time/timeit -- become dis-similar after having been similar. Although, I
> suppose they are mostly for power-users who know these nuances.
>
>
>
> --
> Joel
>
> >
>
--
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org
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