newb question: file searching

[jaysherby at gmail.com]

That worked perfectly.  Thank you.  That was exactly what I was looking
for.  However, can you explain to me what the following code actually
does?

reversed(range(len(dirnames)))


Gabriel Genellina wrote:
> At Tuesday 8/8/2006 21:11, jaysherby at gmail.com wrote:
>
>
> >Here's my code:
> >
> >def getFileList():
> >         import os
> >         imageList = []
> >         for dirpath, dirnames, filenames in os.walk(os.getcwd()):
> >                 for filename in filenames:
> >                         for dirname in dirnames:
> >                                 if not dirname.startswith('.'):
> >                                         if
> > filename.lower().endswith('.jpg') and not
> >filename.startswith('.'):
> >
> >imageList.append(os.path.join(dirpath, filename))
> >         return imageList
> >
> >I've adapted it around all the much appreciated suggestions.  However,
> >I'm running into two very peculiar logical errors.  First, I'm getting
> >repeated entries.  That's no good.  One image, one entry in the list.
>
> That's because of the double iteration. dirnames and filenames are
> two distinct, complementary, lists. (If a directory entry is a
> directory it goes into dirnames; if it's a file it goes into
> filenames). So you have to process them one after another.
>
> >def getFileList():
> >         import os
> >         imageList = []
> >         for dirpath, dirnames, filenames in os.walk(os.getcwd()):
> >                 for filename in filenames:
> >                         if filename.lower().endswith('.jpg') and
> > not filename.startswith('.'):
> >
> >imageList.append(os.path.join(dirpath, filename))
> >                 for i in reversed(range(len(dirnames))):
> >                         if dirnames[i].startswith('.'): del dirnames[i]
> >         return imageList
>
> reversed() because you need to modify dirnames in-place, so it's
> better to process the list backwards.
>
>
>
> Gabriel Genellina
> Softlab SRL
>
>
>
>
>
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