[python-uk] Here's a little test

[Chris Miles]

Not sure if you read my post properly, but as I said the first command
argument is effectively "ignored" (it sets process name).  I
successfully just did:

os.execl('C:\Program Files\Internet Explorer\IEXPLORE.EXE', 'iexplore', 'http://www.google.com/')

Under win32 python.  If this doesn't give you your answer, I'm not sure
what you want!

CM


On Wed, Aug 28, 2002 at 04:27:16PM +0100, dale@riverhall.co.uk wrote:
> Thanks Chris.
> 
> I've tried fiddling with this but see my reply to Simon.
> 
> Cheers.
> 
> Dale Strickland-Clark
> Riverhall Systems Ltd. Custom database and Web applications.
> http://www.riverhall.co.uk
> Offices: London: 0870 321 0034 Wokingham: 0870 321 2378
> Mobile 0701 071 DALE (3253)
> 
>  -----Original Message-----
> From: 	Chris Miles [mailto:chris@psychofx.com] 
> Sent:	Wed, 2002 August 28 15:42
> To:	python-uk@python.org
> Subject:	Re: [python-uk] Here's a little test
> 
> One of my favorite things about Python: ask the object itself!
> 
> >>> import os
> >>> print os.execl.__doc__
> execl(file, *args)
> 
>     Execute the executable file with argument list args, replacing the
>     current process. 
> 
> 
> So as *args says, after the file arg you can pass as many args as you
> like.
> 
> A simple demo on Linux (don't have a win32 handy):
> 
> >>> os.execl('/bin/ls', '-a', '-l')
> total 16
> -r--------    1 root     users        3746 Aug 19 15:56 monitoring
> drwxr-sr-x    2 root     users        4096 Aug 28 11:19 RCS
> -r--------    1 root     users        2835 Aug 27 15:09 skinner
> -r--r--r--    1 root     users        3217 Aug 28 11:19 WEBSERVER
> 
> Although strangely the first argument is being ignored.  A better
> example:
> 
> >>> os.execl('/bin/echo', '111', '222', '333')
> 222 333
> 
> Is this a bug, or something I'm missing?
> 
> Ok, I just worked it out, in typical Unix exec fashion, the first argument
> is actually the process name.  A final example shows this:
> 
> >>> os.execl('/bin/sleep', 'sleeeepy', '99')
> 
> (and in another shell:)
> 
> $ ps -ef |grep slee
> cmiles   25260 22756  0 15:39 pts/4    00:00:00 sleeeepy 99
> 
> Not sure if win32 follows this behaviour as closely.
> 
> Hope that helps somebody anyway!
> 
> CM
> 
> 
> On Wed, Aug 28, 2002 at 03:27:36PM +0100, dale@riverhall.co.uk wrote:
> > I've posted this on clp but not had a response. I thought I'd test you
> guys
> > :o)
> > 
> > 
> > I have a little program I've converted from Javascript which I use
> > frequently. It doesn't work in Python because the last line keeps
> > throwing the error:
> > 
> > Traceback (most recent call last):
> >   File "I:\batch\ie.py", line 22, in ?
> >     os.execl(iepath, args)
> >   File "C:\Python22\Lib\os.py", line 266, in execl
> >     execv(file, args)
> > TypeError: execv() arg 2 must contain only strings
> > 
> > I have tried a variety of formats for the os.execl function,
> > including:
> > 
> > os.execl(iepath, (args, ))
> > os.execl(iepath, [args])
> > os.execl(iepath, args)
> > 
> > but it always complains about arg 2 in this way.
> > 
> > What is execl on about?
> > 
> > Any help appreciated.
> 
> -- 
> Chris Miles
> chris@psychofx.com
> http://www.psychofx.com/chris/
> 
> _______________________________________________
> python-uk mailing list
> python-uk@python.org
> http://mail.python.org/mailman/listinfo/python-uk
> 
> _______________________________________________
> python-uk mailing list
> python-uk@python.org
> http://mail.python.org/mailman/listinfo/python-uk

-- 
Chris Miles
chris@psychofx.com
http://www.psychofx.com/chris/