stat doesn't work!

[Paulo Pinto]

I am doing an application that needs to
know when it is manipulating symbolic links.

But it is failing to reckognize them.

If I run the following code:

<code>
import sys
import os
from stat import *

mode = os.stat(sys.arg v[1])[ST_MODE]
if S_ISLNK(mode):
print 'File is a link'
else:
print 'Just a normal file'
</code>


I will alway get the 'Just a normal file'
message even though I am using a symbolic
link as argument.

I've done the same example in Perl and in
bash and it works.

Could this be a bug in my Python version
(2.2.2) or I am doing something wrong ?

Thanks in advance,
Paulo Pinto

[Jeff Epler]

Re: stat doesn't work!

On Mon, Feb 09, 2004 at 05:10:31PM +0100, Paulo Pinto wrote:[color=blue]
> I am doing an application that needs to
> know when it is manipulating symbolic links.[/color]

try os.lstat.
[color=blue][color=green][color=darkred]
>>> import os
>>> from stat import *
>>> S_ISLNK(os.stat ("/proc/self").st_mode)[/color][/color][/color]
0[color=blue][color=green][color=darkred]
>>> S_ISLNK(os.lsta t("/proc/self").st_mode)[/color][/color][/color]
1

Jeff

[Donn Cave]

Re: stat doesn't work!

In article <c08bdn$fq6$1@s unnews.cern.ch> ,
Paulo Pinto <paulo.pinto@ce rn.ch> wrote:[color=blue]
> I am doing an application that needs to
> know when it is manipulating symbolic links.[/color]

That's a special case, and therefore you have
to use a special version of stat(). stat()
will follow the link, so you get the original
file. lstat() will report the link itself.

Donn Cave, donn@u.washingt on.edu

[Paulo Pinto]

Re: stat doesn't work!

It works now.
Thanks for your answers.

Paulo Pinto wrote:[color=blue]
> I am doing an application that needs to
> know when it is manipulating symbolic links.
>
> But it is failing to reckognize them.
>
> If I run the following code:
>
> <code>
> import sys
> import os
> from stat import *
>
> mode = os.stat(sys.arg v[1])[ST_MODE]
> if S_ISLNK(mode):
> print 'File is a link'
> else:
> print 'Just a normal file'
> </code>
>
>
> I will alway get the 'Just a normal file'
> message even though I am using a symbolic
> link as argument.
>
> I've done the same example in Perl and in
> bash and it works.
>
> Could this be a bug in my Python version
> (2.2.2) or I am doing something wrong ?
>
> Thanks in advance,
> Paulo Pinto
>[/color]