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 --
time/timeit -- become dis-similar after having been similar. Although, I
suppose they are mostly for power-users who know these nuances.
--
Joel
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