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

Sun Mar 13 12:28:30 EDT 2011

On 3/12/2011 9:56 PM, Nadav Horesh wrote:
> This lead to another error probably due to line 68 in map.h. As much as I could trace it, ob_type is a member of PyObject,  not of PyTypeObject. I have no clue how to resolve this.
>
>      Nadav.

Line 68 in map.c is excluded by a preprocessor statement. There is 
likely another use of ob_type in a code that is not used on Windows. I 
have not ported _sane.c for example. I'll try to get access to an Ubuntu 
system and update the source.

Christoph

> ________________________________________
> From: numpy-discussion-bounces at scipy.org [numpy-discussion-bounces at scipy.org] On Behalf Of Christoph Gohlke [cgohlke at uci.edu]
> Sent: 13 March 2011 00:37
> To: numpy-discussion at scipy.org
> Subject: Re: [Numpy-discussion] [OT] any image io       module  that    works   with    python3?
>
> On 3/12/2011 12:47 PM, Nadav Horesh wrote:
>> After the  replacement of ö with o, the installation went without errors, but:
>>
>> nadav at nadav_home ~ $ python3
>> Python 3.1.3 (r313:86834, Feb 25 2011, 11:08:33)
>> [GCC 4.4.4] on linux2
>> Type "help", "copyright", "credits" or "license" for more information.
>>>>> import _imaging
>> Traceback (most recent call last):
>>     File "<stdin>", line 1, in<module>
>> ImportError: /usr/lib64/python3.1/site-packages/PIL/_imaging.so: undefined symbol: Py_FindMethod
>
> Py_FindMethod should be excluded by `#ifndef PY3` or similar
> preprocessor statements. There is a typo in map.c line 65: change
> `#ifdef PY3` to `#ifndef PY3` and clean your build directory before
> rebuilding.
>
> Christoph
>
>>
>>    Thank you,
>>
>>       Nadav.
>> ________________________________________
>> From: numpy-discussion-bounces at scipy.org [numpy-discussion-bounces at scipy.org] On Behalf Of Christoph Gohlke [cgohlke at uci.edu]
>> Sent: 12 March 2011 21:49
>> To: numpy-discussion at scipy.org
>> Subject: Re: [Numpy-discussion] [OT] any image io module that   works   with    python3?
>>
>> On 3/12/2011 8:45 AM, Nadav Horesh wrote:
>>> 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
>> Boost works on Python 3.1. You might need to compile it.
>>> 2. Pygame: I have the stable version(1.9.1) should it work?
>> You need the developer version from svn.
>>> 3. FreeImage: I installed FreeImagePy on python3, but it doesn't work yet.
>> FreeImagePy is unmaintained, does not work on Python 3, and has problems
>> on 64 bit platforms. Just wrap the functions you need in ctypes.
>>> 4. PIL: I patched setup.py and map.c so "python3 setup.py build" is working, but:
>> Try replace "Hans Häggström" with "Hans Haggstrom" in PIL/WalImageFile.py
>>
>> Christoph
>>
>>>
>>> nadav at 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'
>>>      warnings.warn(msg)
>>> running install
>>> running build
>>> running build_py
>>> running build_ext
>>> --------------------------------------------------------------------
>>> PIL 1.1.7 SETUP SUMMARY
>>> --------------------------------------------------------------------
>>> 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
>>>        dist.run_commands()
>>>      File "/usr/lib64/python3.1/distutils/dist.py", line 919, in run_commands
>>>        self.run_command(cmd)
>>>      File "/usr/lib64/python3.1/distutils/dist.py", line 938, in run_command
>>>        cmd_obj.run()
>>>      File "/usr/lib64/python3.1/distutils/command/install.py", line 592, in run
>>>        self.run_command(cmd_name)
>>>      File "/usr/lib64/python3.1/distutils/cmd.py", line 315, in run_command
>>>        self.distribution.run_command(command)
>>>      File "/usr/lib64/python3.1/distutils/dist.py", line 938, in run_command
>>>        cmd_obj.run()
>>>      File "/usr/lib64/python3.1/distutils/command/install_lib.py", line 98, in run
>>>        self.byte_compile(outfiles)
>>>      File "/usr/lib64/python3.1/distutils/command/install_lib.py", line 135, in byte_compile
>>>        dry_run=self.dry_run)
>>>      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?
>>>
>>>      Nadav
>>>
>>>
>>> ________________________________________
>>> From: numpy-discussion-bounces at scipy.org [numpy-discussion-bounces at scipy.org] On Behalf Of Zachary Pincus [zachary.pincus at 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:
>>>
>>> https://github.com/stefanv/scikits.image/blob/master/scikits/image/io/_plugins/freeimage_plugin.py
>>>
>>> If it doesn't work out of the box on python 3, then it should be
>>> pretty simple to fix.
>>>
>>> Zach
>>>
>>>
>>>
>>> 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
>>>> _______________________________________________
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>>>
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