Redirect os.system output

jas codecraig at gmail.com
Mon Oct 24 15:06:34 CEST 2005


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.

Ideas?

jas wrote:
> I see that, although I don't totall grasp the code.  However, I am
> looking to basically emulate a command prompt.  i.e. everything u see
> in the windows command prompt should be displayed back in python.
>
> How can I do it without files?
>
> Kent Johnson wrote:
> > jas wrote:
> > > Any other ideas? or examples of using subprocess to do what I was
> > > asking?
> >
> > Actually I thought I was giving an example of what you were asking:
> > - on windows
> > - send a series of commands to a command process
> > - capture the result to a variable
> >
> > The example I referenced sends a series of HELP commands to cmd.exe, captures the output of the commands and saves it to a file.
> >
> > What did I miss?
> >
> > Kent
> >
> > >
> > >
> > > Kent Johnson wrote:
> > >
> > >>jas wrote:
> > >>
> > >>>I would like to redirect the output from os.system to a variable, but
> > >>>am having trouble.  I tried using os.popen(..).read() ...but that
> > >>>doesn't give me exactly what i want.
> > >>
> > >>Here is an example using subprocess:
> > >>http://groups.google.com/group/comp.lang.python/msg/9fa3a3c287e8e2a3?hl=en&
> > >>
> > >>Kent
> > >>
> > >>
> > >>>..this is windows by the way.
> > >>>
> > >>>For example:
> > >>>tmp = os.popen("hostname").read()
> > >>>
> > >>>...works as expected.
> > >>>
> > >>>however,
> > >>>
> > >>>tmp = os.popen("cmd").read()
> > >>>...i would like to have access to the cmd process...i.e. enter commands
> > >>>like a normal command line. os.system() allows this, but i dont want
> > >>>output to the screen..i wanna store it to a variable.  then send
> > >>>content of variable elsewhere,  receive more input and submit it.
> > >>>almost emulate the windows command prompt.
> > >>>
> > >>>any ideas?
> > >>>
> > > 
> > >




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