[IPython-dev] Auto-calling question

Dan Milstein danmil@comcast....
Mon Feb 26 13:33:58 CST 2007


One of my goals is very much to make the system play nicer with  
extensions (and, hopefully, to put something in place so you can  
insert your own rewriting phases into the middle of a coherent  
rewrite sequence).

Actually, since you bring that up, I have a question about  
input_prefilter:

As far as I can tell from the code, if you install an input_prefilter  
hook, then, for each line:

  If your hook changes the line at all, then IPython does no more  
transformations (no magic, no autocall, etc)

  If your hook runs but does *not* change the line, then IPython  
*does* run it's usual transformations


a) Is that right?

b) Is that the desired behavior?

I can imagine situations where someone would like to add a modest  
extension to IPython's transformations, but this forces you into an  
all-or-nothing situation.

-D

On Feb 26, 2007, at 1:21 PM, Ville M. Vainio wrote:

> On 2/26/07, Dan Milstein <danmil@comcast.net> wrote:
>
>> I do have an idea for cleaning up all that prefilter code, so I'll
>> see if I can fix that all together once I get the tests up and  
>> running.
>
> It would be groovy if it involved input_prefilter hook (see
> Extensions/jobctrl.py and ext_rescapture.py).
>
> -- 
> Ville M. Vainio - vivainio.googlepages.com
> blog=360.yahoo.com/villevainio - g[mail | talk]='vivainio'



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