TypeError: an integer is required

MRAB python at mrabarnett.plus.com
Sun Nov 22 19:29:25 CET 2009

Lutfi Oduncuoglu wrote:
> Hello,
> I am a newbie on oython and I am taking the error at subject my code is 
> below, I am trying to develop a qgis plugin and lines begin with # is 
> the thing that I tried. Thus sys.stdout gives the type error. When I 
> comment that line it turns an error like below. What may be the problem? 
> thanks for help:)
> ...\ReadData.py", line 128, in run
>     print "%d %s" %(k, attr.toString())
> IOError: [Errno 9] Bad file descriptor
>         for (k,attr) in attrs.iteritems():
>           sys.stdout = 
> os.open("C://Users//lutfi//Documents//tezzzz//log.txt" , "a" )
>           print "%d %s" %(k, attr.toString())
I think the problem is that you're binding a low-level file id to
sys.stdout instead of a file object. Try:

            sys.stdout = 
open("C://Users//lutfi//Documents//tezzzz//log.txt" , "a" )

Actually, changing sys.stdout just to use print a single string is a bad
idea. Try this instead:

           log_file = 
open("C://Users//lutfi//Documents//tezzzz//log.txt" , "a" )
           print >> log_file, "%d %s" %(k, attr.toString())

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