Le Fri, 11 May 2012 07:16:35 +0000 (UTC),
Simon King <simon.k...@uni-jena.de> a écrit :
> Hi,
>
> On 2012-05-11, Keshav Kini <keshav.k...@gmail.com> wrote:
> > kcrisman <kcris...@gmail.com> writes:
> >> To be clear, are you complaining about defining *only* x or that x
> >> *is*, in fact, predefined? In any case, this is a discussion we
> >> probably don't need to rehash now, granted that there will never be
> >> peace between the Python purists and Maple wannabes.
> >
> > That x *is*, in fact, predefined. It misleads the user into
> > expecting that other variable names will also be predefined,
> > whereas in fact they are not.
>
> IIRC, the canonical answer to the request "do not predefine x" is:
> "That's not gonna happen, because way too many people expect to have a
> variable x handy."
>
> Anyway.
>
> I don't like pre-defining x either.
Would the following be possible -- instead of :
<<<
sage: y
---------------------------------------------------------------------------
NameError Traceback (most recent call
last)
/home/jpuydt/sage-5.0.beta14/<ipython console> in <module>()
NameError: name 'y' is not defined
>>>
have :
<<<
sage: y
---------------------------------------------------------------------------
NameError Traceback (most recent call
last)
/home/jpuydt/sage-5.0.beta14/<ipython console> in <module>()
NameError: name 'y' is not defined -- perhaps you need to type var('y')
first ?
>>>
?
That way sage still doesn't define things in the user's back, which
would cause problems, as already mentioned in this thread -- but
newcomers wouldn't get stuck needlessly either.
Snark on #sagemath
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