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comp.lang.python

PyCairo, PIL and StringIO

Jair Trejo

1/2/2008 1:15:00 AM

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
this:

mfile = StringIO.StringIO()
final.save(mfile, format="PNG")
ima =
cairo.ImageSurface.create_from_png(mfile)
mfile.close()
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:

final.save('final.png')
ima =
cairo.ImageSurface.create_from_png('final.png')

Instead of a StringIO object, and it works just fine.


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