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Hi All

Please tell me how to check the existence of a file and the read
permission to the file using python script

Thanks for ur inputs

Anoop

Anoop wrote:
> Please tell me how to check the existence of a file and the read
> permission to the file using python script

You can check the os module (os.stat comes to mind).

For an exemple you can have a look at :
http://www.pixelbeat.org/talks/python/ls.py

Regards,

Avell

Anoop wrote:
> Hi All
>
> Please tell me how to check the existence of a file and the read
> permission to the file using python script
>
> Thanks for ur inputs
>
> Anoop

os.access(path, mode) does just this, check it out.

Cross-platform-ness isn't a problem, the docs say it is available for
Windows, Unix and Mac, and I've used it without a hitch on Win2k, WinXP
and various Linux and Unix platforms.

>>> help(os.access)
Help on built-in function access in module nt:

access(...)
access(path, mode) -> 1 if granted, 0 otherwise

Use the real uid/gid to test for access to a path. Note that most
operations will use the effective uid/gid, therefore this routine
can
be used in a suid/sgid environment to test if the invoking user has
the
specified access to the path. The mode argument can be F_OK to
test
existence, or the inclusive-OR of R_OK, W_OK, and X_OK.