trying to use popen2() to communicate with C program

I. Myself No.Spam at Spam.none
Tue Mar 28 22:07:34 CEST 2006


Dennis Lee Bieber wrote:
> On Tue, 28 Mar 2006 18:02:46 GMT, "I. Myself" <No.Spam at Spam.none>
> declaimed the following in comp.lang.python:
>
>   
>> The compile C program, commer.exe, writes a line of text to its stdout.  
>> The python program does not receive it; it never gets to print "Got here 
>> 2".   Commer.exe does begin execution.  Here's commer.c, but there 
>> appears to be no problem with it.  Commer.exe can be executed alone, and 
>> it behaves as expected.
>>
>>     
> 	Try flushing stdout... Many C runtimes detect when stdout is not a
> console and go to a buffered output mode; without a flush, it may be
> holding data until a (disk) block is filled...
>   
That worked!  I put   fflush(stdout);   after the printf() statement, 
and that fixed it.

Thanks!

Mitchell Timin

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