On Sat, 15 Dec 2012 at 02:45AM -0800, pong wrote:
> I am having the same trouble as John. Would you expand a little bit on your
> solution:
>
> for example
> $\sage{'Hello'}$
> causes an error. Where should I put the 'r' as suggested in your post (I
> think stands for raw string)? I tried several combination but nothing seems
> to work.
It causes an error because the \sage{} macro runs Sage's latex()
function on its argument, which in this case produces "\verb|Hello|".
Then TeX gets unhappy because of the verbatim text inside a math
environment.
If you just want the string 'Hello' inserted into your document, use
\sagestr{}. Or, don't surround \sage{} with dollar signs.
> > SAGE should not read Python escape codes inside $'s. As you've
> > noticed from the error message, SAGE doesn't even know it's still
> > doing it. It thinks it's parsing LaTeX.
There is no (easy/reasonable) way for SageTeX to detect whether \sage{}
was called within a math environment, and in any case, altering Sage's
behavior with respect to Python string conventions would require a lot
of work in the preparser that (1) would be difficult, and (2) represent
a large deviation from standard Python behavior that almost no one would
think is reasonable. (That's what I think, at any rate...)
Also, as was pointed out, you can use raw strings to avoid that
behavior. TeX is completely oblivious to the difference between
\sage{r"\nabla"} and \sage{"\nabla"}, so you can always use the former
to get your intended behavior.
Dan
--
--- Dan Drake
----- http://math.pugetsound.edu/~ddrake
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