Redirect os.system output

[Steve Holden]

jas wrote:
> Ok, I tried this...
> 
> C:\>python
> Python 2.4.1 (#65, Mar 30 2005, 09:13:57) [MSC v.1310 32 bit (Intel)]
> on win32
> Type "help", "copyright", "credits" or "license" for more information.
> 
>>>>import subprocess as sp
>>>>p = sp.Popen("cmd", stdout=sp.PIPE)
>>>>
>>>>result = p.communicate("ipconfig")
> 
> 'result' is not recognized as an internal or external command,
> operable program or batch file.
> 
> 
> 
> basically I was opening to send the "ipconfig" command to cmd.exe and
> store the result in the "result" variable.  But you can see there was
> an error with result.
> 
It looks to me like the line you thought you were typing at the Python 
command interpreter actually got snagged by the command processor you 
just ran, which presumably is taking its input from the console just 
like Python is.

> Ideas?
> 
Haven't used subprocess much yet, but I will just mention that this kind 
of thing always looks easy in principle and turns out to be surprisingly 
gnarly and difficult in practice.

I'm not suggesting you shouldn't continue, but you are going to learn a 
*lot* as you proceed. Good luck.

regards
  Steve
[...]
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