#7712: UploadedFile doesn't act like a file object
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Reporter: artagnon | Owner: nobody
Status: reopened | Milestone: 1.0 beta
Component: Tools | Version: SVN
Resolution: | Keywords: upload uploadedfile
Stage: Unreviewed | Has_patch: 0
Needs_docs: 0 | Needs_tests: 0
Needs_better_patch: 0 |
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Changes (by jacob_od):
* status: closed => reopened
* resolution: worksforme =>
Comment:
More info on this one. This happens because the PIL image plugin
ImtImagePlugin.py will use the File method readline, IF the first 100
bytes contain a newline "\n". This also will only happen if this
imageplugin is tried before the correct image is loaded. In
Image.py:init() an os.listdir() is called and it loops through all
imageplugins until it finds the right one. Since os.listdir() returns the
directories content in arbitrary order you may or may not see this bug.
PIL loads the different plugins until it finds the right one so for
instance it will load BMPPlugin and say no this image is not a BMP, then
it loads JPG and tries and on and on until it finds the correct image
type.... so if you happen to be unlucky and the machine loads
ImtImagePlugin.py before it hits your actual image type AND your image
contains newlines within the first 100 bytes (I believe the image we have
that does this is a TIFF created with Microsoft Paint), then it will try
to execute a readline on the image and you see the error. I guess the
solution to this would have to be make the Request.FILES more file like
and implement all file methods.
Currently this can be worked around by going like this
file = StringIO.StringIO(request.FILES['ugpFile'].read())
image = Image.open(file)
BTW, I TOTALLY <3 DJANGO U GUYZ R THE BEST AND GIVE ME A BILLION WOODIES A
DAY! THANKS!!!!
--
Ticket URL: <http://code.djangoproject.com/ticket/7712#comment:2>
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