[How to change redirect stderr?]

[Moretti]

Hello,
I would like to be able to change the standard error path.

How can I do this in a script if I want to send error messages to /dev/null
by example ?

Thanks

--
Sebastien Moretti

[JuHui]

Re: [How to change redirect stderr?]

how about
$ python test.py 2> /dev/null
?

[Fredrik Lundh]

Re: [How to change redirect stderr?]

"Moretti" wrote:
[color=blue]
> I would like to be able to change the standard error path.[/color]

(I'm not sure path is the right word here, really, but never mind...)
[color=blue]
> How can I do this in a script if I want to send error messages to /dev/null
> by example ?[/color]

if you're talking about things that Python prints to stderr, all you need
to do is to replace sys.stderr with something more suitable:

import sys
sys.stderr = open("/dev/null", "w")

or, more portable:

class NullDevice:
def write(self, s):
pass

sys.stderr = NullDevice()

if you want to redirect both things printed via sys.stderr and things
printed to stderr at the C level, you need to redirect the STDERR file
handle. here's one way to do that:

import os, sys

sys.stderr.flus h()
err = open('/dev/null', 'a+', 0)
os.dup2(err.fil eno(), sys.stderr.file no())

hope this helps!

</F>

[Moretti]

Re: [How to change redirect stderr?]

Fredrik Lundh wrote:
[color=blue]
> "Moretti" wrote:
>[color=green]
>> I would like to be able to change the standard error path.[/color]
>
> (I'm not sure path is the right word here, really, but never mind...)
>[color=green]
>> How can I do this in a script if I want to send error messages to
>> /dev/null by example ?[/color]
>
> if you're talking about things that Python prints to stderr, all you need
> to do is to replace sys.stderr with something more suitable:
>
> import sys
> sys.stderr = open("/dev/null", "w")
>
> or, more portable:
>
> class NullDevice:
> def write(self, s):
> pass
>
> sys.stderr = NullDevice()
>
> if you want to redirect both things printed via sys.stderr and things
> printed to stderr at the C level, you need to redirect the STDERR file
> handle. here's one way to do that:
>
> import os, sys
>
> sys.stderr.flus h()
> err = open('/dev/null', 'a+', 0)
> os.dup2(err.fil eno(), sys.stderr.file no())
>
> hope this helps!
>
> </F>[/color]

Thanks
It's exactly what I seek for.

--
Sebastien Moretti