I had this problem as well with Python 3.6. I just avoided the problem by uninstalling pillow (4.1.0) and then installing an older version of pillow (4.0.0). It seems to run okay with the older version.
Think of BytesIO as a file object, after you finish writing the image, the file’s cursor is at the end of the file, so when Image.open() tries to call output.read(), it immediately gets an EOF. You need to add a output.seek(0) before passing output to Image.open().
I had the same error. Here was my workflow. I first installed PIL (not Pillow) using pip install –no-index -f https://dist.plone.org/thirdparty/ -U PIL Then I found Pillow and installed it using pip install Pillow What fixed my issues was uninstalling both and reinstalling Pillow pip uninstall PIL pip uninstall Pillow pip install Pillow
There is a bug reported for Pillow here, which indicates that libjpeg and zlib are now required as of Pillow 3.0.0. The installation instructions for Pillow on Linux give advice of how to install these packages. Note that not all of the following packages may be missing on your machine (comments suggest that only libjpeg8-dev … Read more
The documentation for Image.open says that it can accept a file-like object, so you should be able to pass in a io.BytesIO object created from the bytes object containing the encoded image: from PIL import Image import io image_data = … # byte values of the image image = Image.open(io.BytesIO(image_data)) image.show()
This is easy to do in PIL too. Create an empty image and just paste in the images you want at whatever positions you need using paste. Here’s a quick example: import Image #opens an image: im = Image.open(“1_tree.jpg”) #creates a new empty image, RGB mode, and size 400 by 400. new_im = Image.new(‘RGB’, (400,400)) … Read more
(This solution is from the author himself. I have just moved it here.) SOLUTION: # This portion is part of my test code byteImgIO = io.BytesIO() byteImg = Image.open(“some/location/to/a/file/in/my/directories.png”) byteImg.save(byteImgIO, “PNG”) byteImgIO.seek(0) byteImg = byteImgIO.read() # Non test code dataBytesIO = io.BytesIO(byteImg) Image.open(dataBytesIO) The problem was with the way that Image.tobytes()was returning the byte object. … Read more
libjpeg-dev is required to be able to process jpegs with pillow (or PIL), so you need to install it and then recompile pillow. It also seems that libjpeg8-dev is needed on Ubuntu 14.04 If you’re still using PIL then you should really be using pillow these days though, so first pip uninstall PIL before following … Read more