[IPython-user] Gtk (and specifically matplotlib) support in ipython
Fernando.Perez at colorado.edu
Fri Aug 13 13:37:50 CDT 2004
Fernando Perez wrote:
> Prabhu Ramachandran wrote:
>>>>>>>"FP" == Fernando Perez <Fernando.Perez at colorado.edu> writes:
>> FP> The code already works fairly well, with one significant
>> FP> caveat: any process started via os.system() (whether directly
>> FP> or implicitly using !cmd) will hang after a while. I have
>> FP> currently no solution for this, but will welcome any ideas.
>> FP> Note that the problem seems to only affect long-running GUI
>> FP> apps, simple '!grep foo *' type things appear to function just
>> FP> fine. But something like '!gv foo.eps &' will open gv, and
>> FP> after about 30 seconds the gv instance stops responding to all
>> FP> keyboard/mouse input.
>>You probably already have tried this but how about using
>>os.spawnl(...). Here a simple use case:
>> pid = os.spawnl(os.P_NOWAIT, script, script)
> Uh, no, not really. When I said I was an ignoramus, I wasn't kidding.
> But it doesn't seem to to work:
> In : import os
> In : os.spawnl(os.P_NOWAIT,'/usr/X11R6/bin/xcalc')
> Out: 27433
Sorry, my bad. Despite the docs showing the calling sequence as:
spawnlp( mode, file, ...)
you actually have to supply the file argument _twice_ (as Prabhu correctly
pointed out in his example). The docs here are kind of funky...
However, the deadlock happens as well. Just as stumped...
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