[Zope] saving PIL Images

[Gaurav Girotra]

Hello

I am using Plone3 and zope 2.10,
I need to save images generated through MatplotLib Graphs using External
Methods to my zope site or to my linux file system.

When i try to save using im.save("/zope/zeocluster/Extemsions")
folder i get Permission denied error.

Can anyone Help me in saving images to the file system.
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