popen3 and Perforce

[Sam Holden]

On 8 Sep 2004 22:28:11 -0700, Ruchika <ruchika_khera at hotmail.com> wrote:
> Hi,
>
> I am trying to automate the build process for which I need to run P4
> commands from the Python script. After getting sources from Perforce,
> I need to build them using Visual C++ from the script.
> I wrote a small script that calls the P4 sync command from the script
> -
>
> try:
>      in, out, err = os.popen3('P4 -s sync -f /dev/src/...')
>      x = len (in.readlines())
>      y = len (out.readlines())
>      z = len (err.readlines())
>      print x
>      print y
>      print z
> except IOError:
>      print "IOError"
> except:
>      print "Unknown"
>
> Tha above returns from os.opopen3 almost immediately, goes to x = len
> (in.readlines()) and then jumps to the IOError exception.
> Can anyone help me figure out whats happening.

Reading from an output only filehandle is probably doomed to fail.

-- 
Sam Holden