redirecting stderr

[Roland Heiber]

Michele Simionato wrote:
> Maybe it is something obvious, but what is going on with this code?
> 
> import sys
> myerr = file("myerr.txt", "w")
> sys.stderr = myerr
> try:
>     raise Exception, "some error"
> finally:
>     myerr.close()
>     sys.stderr = sys.__stderr__
> 
> I would expect the error message to be written into "myerr.txt", instead
> it is displayed on the console, on regular stderr (?) and "myerr.txt" is
> empty. I guess I misunderstood something ...
> 
>                   Michele Simionato

Hi,

os.close(2)
os.dup2(myerr.fileno(), 2)

Works, but is dirty ...

HtH, Roland