[Zope] memory handling in zope

[Lauri Posti]

Hi,

Im still trying to get image risizing to work in zope. Using PIL
directly inside zope (using StringIO)  caused an IOException with larger
images. The same code works fine outside zope. Now I tried to make the
resizing in independent python script. the script works without any
problems, but now i am unable to write my image data into file.

Does zope somehow 'hack' pyhtons memory handling?

the current code is:
def resize2(data):


        fn=tempfile.mktemp()
        print fn
        f=open(fn,"w+")
        f.write(data)
        os.system("pyhton resize.py %s 180 150 " % fn)
        f.close()
        f=open(fn,"r")
        newim=f.read()
        f.close()        
        os.system("rm "+fn)
        return newim                                                           

And the traceback is :
Sorry, a Zope error occurred.

          Traceback (innermost last):
            File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 214,
in publish_module
            File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 165,
in publish
            File /usr/lib/zope/lib/python/ZPublisher/mapply.py, line 160,
in mapply
              (Object: manage_addPicture)
            File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 102,
in call_object
              (Object: manage_addPicture)
            File Newsitem.py, line 185, in manage_addPicture
              (Object: ElementWithAttributes)
            File Newsitem.py, line 125, in resize2
          TypeError: read-only buffer, ImplicitAcquirerWrapper

Could anybody give any hints?


Lauri