question for sys.stdout

Leon square690410 at yahoo.com.tw
Thu Nov 4 11:20:53 CET 2004


sorry....
how to replace sys.stdout to file-like object ?
I use os module fdopen() and file object fileno()
stdout = os.fdopen(sys.stdout.fileno(),"w")
or
stdout = os.fdopen(os.dup(sys.stdout.fileno()),"w")

it still can't do rewrite, it result is append content

.>_<.    Please help me

"Pierre Barbier de Reuille" <pierre.barbier at cirad.fr> 
???????:4189ec52$0$6282$626a14ce at news.free.fr...
> If you want to "rewrite" a "stdout" object, just write a file-like object 
> and replace sys.stdout !
>
> Then don't care about the old stdout anymore ... it's a pipe and it won't 
> bother you anymore :)
>
> Another way to do so is the "C" way ... ie. using os.dup2. The advantage 
> of the "dup2" method is the replacement of the stdout of the whole program 
> (so, if you use external functions writing in stdout it will work), but 
> the drawback is you need to have a real file (ie. file, pipe, ...)
>
> Depends on what you want to use :)
>
> Leon a écrit :
>> "stdout" is file object, it open mode is "w"
>> and it have a close() fuction.....
>> while it run close(), how to reopen it
>>
>> because I want to do rewrite it
>> stdout content update
>> 




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