Pillow on Heroku doesn't work - django

Question

I'm developing an application with Django1.4.3 and Pillow2.0.0.
I have a form to upload image file.
After resizing and cropping posted image file,
I want to save the image file, but error occur.
In django's local test server, error doesn't occur and work well,
but in Heroku, error occur.
Would you tell me some advice?
The code receiving posted image is below.
In addition, I use S3boto and django-storage.
def edit_photo(request):
if request.user.is_authenticated():
if request.method == 'POST':
# save posted image as UserProfile.image temporarily
posted_photo = request.FILES['posted_photo']
file_content = ContentFile(posted_photo.read())
profile = request.user.get_profile()
temp_filename = "new_file_"+str(profile.id)+"_"+posted_photo.name
profile.image.save(temp_filename, file_content)
# read posted file
data = profile.image.read()
im = Image.open(StringIO.StringIO(data))
# crop posted image
cropping_box = (10, 10, 300, 300)
photo = photo.crop(cropping_box)
photo_comp = photo.resize((230, 230), Image.ANTIALIAS)
# save the image
thum = StringIO.StringIO()
photo_comp.save(thum, "png")
profile.image.save("saved_image_"+str(profile.id)+".png",ContentFile(thum.getvalue()))
# delete temporary image
default_storage.delete("faces/"+temp_filename)
return redirect('../')
And Error message is like this.
TypeError at /manage/edit_photo
function takes at most 4 arguments (6 given)
Request Method: POST
Request URL: http://hogehoge.herokuapp.com/manage/edit_photo
Django Version: 1.4.3
Exception Type: TypeError
Exception Value:
function takes at most 4 arguments (6 given)
Exception Location: /app/.heroku/python/lib/python2.7/site-packages/PIL/Image.py in _getencoder, line 395
Python Executable: /app/.heroku/python/bin/python
Python Version: 2.7.4
Python Path:
['/app',
'/app/.heroku/python/lib/python2.7/site-packages/pip-1.3.1-py2.7.egg',
'/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.11.0.55/newrelic/bootstrap',
'/app',
'/app/.heroku/python/lib/python27.zip',
'/app/.heroku/python/lib/python2.7',
'/app/.heroku/python/lib/python2.7/plat-linux2',
'/app/.heroku/python/lib/python2.7/lib-tk',
'/app/.heroku/python/lib/python2.7/lib-old',
'/app/.heroku/python/lib/python2.7/lib-dynload',
'/app/.heroku/python/lib/python2.7/site-packages',
'/app/.heroku/python/lib/python2.7/site-packages/PIL',
'/app/.heroku/python/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg-info']
/app/.heroku/python/lib/python2.7/site-packages/django/core/handlers/base.py in get_response
response = callback(request, *callback_args, **callback_kwargs) ...
▶ Local vars
/app/movie_manager/views.py in edit_photo
photo_comp.save(thum, "png") ...
▶ Local vars
/app/.heroku/python/lib/python2.7/site-packages/PIL/Image.py in save
save_handler(self, fp, filename) ...
▶ Local vars
/app/.heroku/python/lib/python2.7/site-packages/PIL/PngImagePlugin.py in _save
ImageFile._save(im, _idat(fp, chunk), [("zip", (0,0)+im.size, 0, rawmode)]) ...
▶ Local vars
/app/.heroku/python/lib/python2.7/site-packages/PIL/ImageFile.py in _save
e = Image._getencoder(im.mode, e, a, im.encoderconfig) ...
▶ Local vars
/app/.heroku/python/lib/python2.7/site-packages/PIL/Image.py in _getencoder
return encoder(mode, *args + extra) ...
▶ Local vars

Answer 1

For anyone else who finds this problem...
This TypeError can occur when PIL and Pillow are installed simultaneously (perhaps inadvertently due to hidden package requirements). You'll need to uninstall both PIL and Pillow and reinstall just the one you want.