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PyCairo, PIL and StringIO

I'm doing some image processing in PIL, and I want to
display the results in a GTK window using PyCairo, so
I create a Cairo image surface from the PIL Image like

mfile = StringIO.StringIO()
final.save(mfile, format="PNG")
ima =
return ima

Where final is a PIL image. The problem is, I get a
IOError: error while reading from Input Stream.

¿Any idea of why is this happening? I tried saving to
a temporary file, i.e., replace the above code with:

ima =

Instead of a StringIO object, and it works just fine.
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Jan 2 '08 #1
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