redirecting stderr back..

[rh0dium]

Hi All,

Can someone tell me how to redirect stderr back to the console once
you've moved it?

import os,sys
se = os.open("/tmp/mod.log", os.O_WRONLY|os.O_APPEND|os.O_CREAT)
sys.stderr.write("Foobar\n")
Foobar
os.dup2(se, 2)

cmds = os.popen("ls alaksjdf")

<Now what do I need to do here to make this come back?>

sys.stderr.write("Foobar\n")
Foobar

Any ideas? Thanks

 

[Дамјан ГеоргиевÑки]

Hi All,

Can someone tell me how to redirect stderr back to the console once
you've moved it?

import os,sys
se = os.open("/tmp/mod.log", os.O_WRONLY|os.O_APPEND|os.O_CREAT)
sys.stderr.write("Foobar\n")
Foobar
os.dup2(se, 2)

why not os.dup2(2, 10) and then later os.dup2(10, 2)

 

[Steve Holden]

why not os.dup2(2, 10) and then later os.dup2(10, 2)

I'd have thought it would be necessary to do something like that in the
general case to ensure that the original standard error remained open.

os.dup2 will close the original file unless it's still open on another
descriptor.

regards
Steve