How to depress the output of an external module ?

[fdu.xiaojf at gmail.com]

Carl Banks wrote:
> Carl Banks wrote:
>   
>> fdu.xiaojf at gmail.com wrote:
>>     
>>> After some trials I found that put "os.close(1)" before calling the
>>> function will depress the output. In fact, "os.close(1)" closed
>>> standard output, but I don't know how to open it again after the function's
>>> execution.
>>>       
>> Try this:
>>
>> fd = os.dup(1)
>> os.close(1)
>> sys.stdout = os.fdopen(fd)
>>     
>
> Also, right after closing file descriptor 1, you might want to set it
> to something so as to eliminate an annoying warning message when Python
> tries to close it upon termination but finds it already closed.  This
> opens /dev/null and puts it in file descriptor 1 if not there already
> (the fdz != 1 test might be unnecessary; I don't know if all flavors of
> Unix always use the lowest available file descriptor).
>
> fdz = os.open("/dev/null",os.O_WRONLY)
>   
  Is it possible that I redirect low level standard output to
  a file-like object created by cStringIO.StringIO() instead
  of "/dev/null" ?
> if fdz != 1:
>     os.dup2(fdz,1)
>     os.close(fdz)
>
>
> Carl Banks
>