[Numpy-discussion] [OT] any image io module that works with python3?

Nadav Horesh nadavh@visionsense....
Sat Mar 12 10:45:27 CST 2011

I forgot to mention that I work on linux (gentoo x86-64).Here are my achievements till now:

1. PythonMagick: Needs boost which I do not have it avaiable on python3
2. Pygame: I have the stable version(1.9.1) should it work?
3. FreeImage: I installed FreeImagePy on python3, but it doesn't work yet.
4. PIL: I patched setup.py and map.c so "python3 setup.py build" is working, but:

nadav@nadav_home /dev/shm/PIL-1.1.7-py3 $ sudo python3.1  setup.py install
/usr/lib64/python3.1/distutils/dist.py:259: UserWarning: Unknown distribution option: 'ext_comp_args'
running install
running build
running build_py
running build_ext
version       1.1.7
platform      linux2 3.1.3 (r313:86834, Feb 25 2011, 11:08:33)
              [GCC 4.4.4]
--- TKINTER support available
--- JPEG support available
--- ZLIB (PNG/ZIP) support available
--- FREETYPE2 support available
--- LITTLECMS support available


byte-compiling /usr/lib64/python3.1/site-packages/PIL/WalImageFile.py to WalImageFile.pyc
Traceback (most recent call last):
  File "setup.py", line 520, in <module>
    setup(*(), **configuration)  # old school :-)
  File "/usr/lib64/python3.1/distutils/core.py", line 149, in setup
  File "/usr/lib64/python3.1/distutils/dist.py", line 919, in run_commands
  File "/usr/lib64/python3.1/distutils/dist.py", line 938, in run_command
  File "/usr/lib64/python3.1/distutils/command/install.py", line 592, in run
  File "/usr/lib64/python3.1/distutils/cmd.py", line 315, in run_command
  File "/usr/lib64/python3.1/distutils/dist.py", line 938, in run_command
  File "/usr/lib64/python3.1/distutils/command/install_lib.py", line 98, in run
  File "/usr/lib64/python3.1/distutils/command/install_lib.py", line 135, in byte_compile
  File "/usr/lib64/python3.1/distutils/util.py", line 560, in byte_compile
    compile(file, cfile, dfile)
  File "/usr/lib64/python3.1/py_compile.py", line 137, in compile
    codestring = f.read()
  File "/usr/lib64/python3.1/codecs.py", line 300, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xe4 in position 1909: invalid continuation byte

Any idea on how to correct it? Any elegant way to avoid byte compiling?


From: numpy-discussion-bounces@scipy.org [numpy-discussion-bounces@scipy.org] On Behalf Of Zachary Pincus [zachary.pincus@yale.edu]
Sent: 12 March 2011 14:35
To: Discussion of Numerical Python
Subject: Re: [Numpy-discussion] [OT] any image io module that works with        python3?

Here's a ctypes interface to FreeImage that I wrote a while back and
was since cleaned up (and maintained) by the scikits.image folk:


If it doesn't work out of the box on python 3, then it should be
pretty simple to fix.


On Mar 12, 2011, at 4:40 AM, Christoph Gohlke wrote:

> On 3/12/2011 1:08 AM, Nadav Horesh wrote:
>> Having numpy, scipy, and matplotlib working reasonably with
>> python3, a
>> major piece of code I miss for a major python3 migration is an
>> image IO.
>> I found that pylab's imread works fine for png image, but I need to
>> read
>> all the other image format as well as png and jpeg output.
>> Any hints (including advices how easyly construct my own module) are
>> appreciated.
>> Nadav.
> On Windows, PIL (private port at
> <http://www.lfd.uci.edu/~gohlke/pythonlibs/#pil>), PythonMagick
> <http://www.imagemagick.org/download/python/>, and pygame 1.9.2pre
> <http://www.pygame.org> are working reasonably well for image IO. Also
> the FreeImage library <http://freeimage.sourceforge.net/> is easy to
> use
> with ctypes <http://docs.python.org/py3k/library/ctypes.html>.
> Christoph
> _______________________________________________
> NumPy-Discussion mailing list
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