[Cython] Utility Codes and templates

Dag Sverre Seljebotn d.s.seljebotn at astro.uio.no
Fri Jul 22 17:49:07 CEST 2011


On 07/22/2011 05:46 PM, Dag Sverre Seljebotn wrote:
> On 07/22/2011 03:07 PM, Stefan Behnel wrote:
>> Stefan Behnel, 22.07.2011 15:04:
>>> Dag Sverre Seljebotn, 22.07.2011 13:54:
>>>> On 07/22/2011 01:10 PM, Stefan Behnel wrote:
>>>>> I'm fine with using a template engine for the more involved cases
>>>>> (which
>>>>> are rare enough). However, I'd prefer not adding a new dependency, but
>>>>> just shipping a tiny single-module engine with Cython, e.g.
>>>>> Templite or
>>>>> pyratemp (just found them, never used them).
>>>>
>>>> BTW, I don't think anybody is suggesting having an *external*
>>>> dependency
>>>> that users would need to go fetch themselves....that would be insane.
>>>
>>> Sure. I also don't mind having a small engine in a package, but just
>>> putting a single file in the source tree (and overwriting it with a new
>>> version at need) would be a perfectly small and nonintrusive addition.
>>> And
>>> given that there really are engines of that size (one file, <500 lines),
>>> it's not so unrealistic either.
>>>
>>> That being said, if you can recommend Tempita (which IMHO qualifies as
>>> "small enough"), I won't object to it.
>>
>> ... although, isn't it unfortunate that it uses "{{...}}" for template
>> code? How well readable is that when used in C code?
>
> At least in emacs, pretty much any template syntax will mess up things
> pretty badly, especially automatic indentation and so on.
>
> What I do is using mmm-mode, so that everything within {{ and }} is
> highlighted with python-mode, and the rest with c-mode. I'll share my
> configuration later.
>
> I'm merely stating why this has never been an issue for me, I'm NOT
> suggesting everyone should use emacs (or that plain text editing isn't
> convenient); you do have a point.
>
> Keep in mind that a syntax must work well with utility code written in
> Cython as well.

OTOH one *might* want to have

code.put_tempita(..) # or similar

in Python code, and in that case plain text readability is very important.

Of course, hacking Tempita to make it %[ ]% instead is a five minute 
job. But I'm happy with any other engine that somebody have actually 
tried out extensively.

Dag Sverre


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