Re: [announce] python-kmod 0.9

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On 03/26/2014 10:45 AM, Lucas De Marchi wrote:
On Mon, Mar 24, 2014 at 10:12:26AM -0700, Andy Grover wrote:
On 03/24/2014 05:02 AM, Lucas De Marchi wrote:
I've just pushed a branch named "python" which contains the python
bindings. I did it a bit different than you:

  - All the code from your repository was imported maintaining the
history. I would like to keep it, so I did a merge of the final import
(fast forward, but forced to contain a commit).
  - Python bindings are built with autotools. This allows to easily
express the dependency with libkmod... but I'm not sure this is ideal
as opposed to having a target to explicitely calling setuptools.  Any
opinion?

Then I noticed the example given in the README file doesn't work.
Neither by installing they original python-kmod package :-/

     >>> import kmod
     >>> km = kmod.Kmod()
     Traceback (most recent call last):
       File "<stdin>", line 1, in <module>
     AttributeError: 'module' object has no attribute 'Kmod'
     >>> dir(kmod)
     ['__builtins__', '__doc__', '__file__', '__loader__', '__name__',
'__package__', '__path__', '__version__', 'list', 'version']


The old 'python-kmod' pkg works for me:

[agrover@work ~/.../python/kmod ((fac4d09...))]$ ipython

In [1]: import kmod

In [2]: km = kmod.Kmod()

In [3]: sc = list(km.lookup("soundcore"))[0]

In [4]: sc.path
Out[4]: u'/lib/modules/3.13.6-200.fc20.x86_64/kernel/sound/soundcore.ko'

but when I try to use the new stuff:

[agrover@work ~/.../python/kmod ((fac4d09...))]$
PYTHONPATH="/home/agrover/git/kmod/libkmod/python/kmod/.libs" ipython

In [1]: import kmod
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-ff824b795612> in <module>()
----> 1 import kmod

ImportError: dynamic module does not define init function (initkmod)

Is this what you're seeing as well?


humn... indeed. The error was obfuscated for me because in the
__init__.py you catch the exception and make it pass silently.

In the build system I was inheriting the CFLAGS from the library and
unfortunately PyMODINIT_FUNC doesn't include the visibility attribute.
Since we use -fvisibility=hidden by default, this was breaking the
module.

It's working now, though I don't like to let it as -fvisibility=default.

I just pushed the python branch again. Could you ack on it?

I'm still getting this error.

[agrover@work ~/git/kmod (python)]$ PYTHONPATH="/home/agrover/git/kmod/libkmod/python/kmod/.libs" python
Python 2.7.5 (default, Feb 19 2014, 13:47:28)
[GCC 4.8.2 20131212 (Red Hat 4.8.2-7)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import kmod
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
File "list.pxd", line 21, in init kmod.kmod (libkmod/python/kmod/kmod.c:3831)
ImportError: No module named list

I'm sorry I'm not being more help.. maybe we could get W. Trevor King or another Cython contributor to help us out here? I played around with it a bit and changing "kmod.list" to "list" on the line reporting an error in kmod.c seemed to help, and then repeating for additional errors, but kmod.c is a generated file so that's not the actual solution.

Regards -- Andy

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