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pipes

Hi. I'm rtying to use pipes to communicate between a python GUI and a
spawned C++ program. I prefer not to use forking because the app may
be run on windows, where forking isn't supported. Roughly what I'm
doing is:

(r,w) = os.pipe()
spawnl(P_WAIT, 'tool.exe', ' ', message, str(w))
close(w)
print os.read(r, 1000)

In c++ ,
....
int main(int argc, char** argv)
{

}

Sep 11 '07 #1
1 1538
On Mon, 10 Sep 2007 20:15:40 -0700, yagyala <mb****@phys.ks u.edu>
wrote:
>Hi. I'm rtying to use pipes to communicate between a python GUI and a
spawned C++ program. I prefer not to use forking because the app may
be run on windows, where forking isn't supported. Roughly what I'm
doing is:

(r,w) = os.pipe()
spawnl(P_WAI T, 'tool.exe', ' ', message, str(w))
close(w)
print os.read(r, 1000)

In c++ ,
...
int main(int argc, char** argv)
{

}
The 'subprocess' module provides an easier interface imo, eg:

process = subprocess.Pope n('tool.exe', stdin=subproces s.PIPE,
stdout=subproce ss.PIPE, universal_newli nes=true)
(self.outstream , self.instream) = (process.stdout , process.stdin)

Daniel Klein
Sep 11 '07 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

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