On Wed, 02 Feb 2011 20:46:12 -0800, harryos wrote:
> In windows ,I tried this
>
> p1 = "C:\Users\me\Documents"
> p2 = "..\Pictures\images\my.jpg"
>
> print os.path.join(p1,p2)
> This gives
> 'C:\\Users\\me\\Documents\\..\\Pictures\\images\\my.jpg'
>
> I expected I would get
> 'C:\\Users\\me\\Pictures\\images\\my.jpg'
>
> I thought os.path.join would join the paths more intelligently..Any idea
> why this happens ?
You thought wrong.
os.path.join just joins what you tell it to, it doesn't normalise the
path. If you want to normalise, call os.path.normpath:
>>> os.path.normpath('x/y/../z')
'x/z'
As for why, it's because joining and normalising are two different
operations that you may wish to keep separate, so they require two
separate functions.
BTW, Windows accepts / as well as \ as a path separator. You will have
far fewer headaches if you use that.
--
Steven
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