When I upload a PNG file and use PIL to handle it,there will be an
error occured:
'NoneType' object is unsubscriptable
I do not know why and other formats(BMP GIF JPG JPEG) are all ok.
The following is my code in my views.py:
f = request.FILES["imagefile"]
fileExt = (f.name).split(".")[-1].lower() #get the pic's extension
parser = ImageFile.Parser()
for chunk in f.chunks():
parser.feed(chunk)
img = parser.close()
img.save("test"+"."+fileExt)
The detail of the occured error is as follows:
Environment:
Request Method: POST
Request URL: http://localhost:8000/photos/album/2/upload/
Django Version: 1.0-final-SVN-unknown
Python Version: 2.5.2
Installed Applications:
['django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.admin',
]
Installed Middleware:
('django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware')
Traceback:
File "F:\Python25\Lib\site-packages\django\core\handlers\base.py" in
get_response
86. response = callback(request, *callback_args,
**callback_kwargs)
File "F:\52trips\wawafish\..\wawafish\photos\views.py" in upload_photo
175. img.save("test"+"."+fileExt)
File "F:\Python25\Lib\site-packages\PIL\Image.py" in save
1372. self.load()
File "F:\Python25\Lib\site-packages\PIL\ImageFile.py" in load
189. s = read(self.decodermaxblock)
File "F:\Python25\Lib\site-packages\PIL\PngImagePlugin.py" in
load_read
365. return self.fp.read(bytes)
File "F:\Python25\Lib\site-packages\PIL\ImageFile.py" in read
300. data = self.data[pos:pos+bytes]
Exception Type: TypeError at /photos/album/2/upload/
Exception Value: 'NoneType' object is unsubscriptable
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