[Python-ideas] threading : AttributeE???rror: 'NoneType' object has no attribute 'start'

[Sagar Neve]

Thanks. This is been resolved. Will take care of this in future.



On Mon, Sep 12, 2011 at 8:30 AM, C. Titus Brown <ctb at msu.edu> wrote:

> On Sun, Sep 11, 2011 at 07:54:28PM -0700, Sagar Neve wrote:
> > I am new to the python and I need a small script to be written using
> > threads which reads the specific files present in a directory and does
> > some selections of lines and then write those lines into different
> > files.
> >
> > However the error I am getting is:
> > AttributeError: 'NoneType' object has no attribute 'start'
>
> [ ... ]
>
> Hi Sagar,
>
> this isn't the right place to post questions about how to use Python --
> this is
> python-ideas, a list for discussing future changes to the language.  Please
> go to
>
> http://mail.python.org/mailman/listinfo/python-list
>
> with future requests for help.
>
> > Here is the code. Can somebody please help me. This is very urgent.
>
> ...and note that your urgency is not ours, since you're not paying us!
>
> That having been said, at least one source of your problems is that
> 'getFiles' doesn't return a value.  It's kind of hard to figure out what
> you want it to do; 'thr.start()' followed by 'thr.join()' immediately isn't
> going to result in much threading, unless there's more going on here than
> meets the eye.
>
> You might want to use something like
>
>        thr = threading.Thread(target=getFiles)
>
> instead.  See
>
> http://docs.python.org/library/threading.html#thread-objects
>
> And please ask future questions elsewhere.
>
> thanks!
>
> cheers,
> --titus
>
> > def getFiles(fname):
> >        fname=preprocessLogFileDir + "/" + fname
> >        print fname
> >        fin = open(fname, "r")
> >        line=fin.readline()
> >        print line
> >        .... # some extraction logic.
> >        fout = open("out-single-file/1xx_2xx_total", "w")
> >        fout.write(line)
> >        fout.close()
> >
> > files=os.listdir(preprocessLogFileDir)
> > cnt=1;
> > for fname in files:
> >        print fname
> >        if fnmatch.fnmatch(fname,'*.log'): #and os.path.isfile(fname):
> >                thr = "thr" + str(cnt)
> >                print thr
> >                thr=getFiles(fname)
> >                thr.start()
> >                thr.join
> >                cnt = cnt + 1
> >        else:
> >                print "\npreprocessLogFileDir/fname is either a
> > directory or does
> > not end with 'log'."
> >                print "Probabally not a pre-process file. Ignoring the
> > file.\n\n"
> > _______________________________________________
> > Python-ideas mailing list
> > Python-ideas at python.org
> > http://mail.python.org/mailman/listinfo/python-ideas
>
> --
> C. Titus Brown, ctb at msu.edu
>
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