Install difficulties - No module named _hough_transform

[James Jackson]

Josh,

Thanks for the reply - I've just installed cython using the requirements
file so should be up-to-date.  Looking back at my install log, it seems
I've got the latest (0.22).

Collecting cython>=0.21 (from -r requirements.txt (line 1))
  Downloading
Cython-0.22-cp27-none-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl
(3.7MB)

Looking in the site-packages directory I do see a _hough_transform library:

James-Jacksons-MacBook-Air:transform jamesjackson$ pwd
/Library/Python/2.7/site-packages/skimage/transform
James-Jacksons-MacBook-Air:transform jamesjackson$ ll | grep hough
-rwxr-xr-x   1 root  wheel  659580 14 Feb 09:41 _hough_transform.so
-rw-r--r--   1 root  wheel    5566 14 Feb 09:41 hough_transform.py
-rw-r--r--   1 root  wheel    5044 14 Feb 09:41 hough_transform.pyc

So something funny is clearly going on here with it not being picked up...

Yours,
James.

On Sat, Feb 14, 2015 at 5:51 PM, Josh Warner <silvertrumpet999 at gmail.com>
wrote:

> Hi James,
>
> These are Cython modules that aren't being found or are not properly
> compiling. Please let us know what version of Cython you are running.
>
> Rest assured the modules are there. These are not external dependencies. I
> suspect an old version of Cython is to blame.
>
>
> Regards,
>
>
>
> On Saturday, February 14, 2015 at 7:35:31 AM UTC-7,
> james.a.f... at googlemail.com wrote:
> > Hi,
> >
> >
> > I'm trying to install skimage, and having installed the dependencies
> (from requirements.txt in the source release), and then using pip to
> install skimage itself, I am having problems importing the transform
> library:
> >
> >
> >
> > Python 2.7.2 (default, Oct 11 2012, 20:14:37)
> > [GCC 4.2.1 Compatible Apple Clang 4.0 (tags/Apple/clang-418.0.60)] on
> darwin
> > Type "help", "copyright", "credits" or "license" for more information.
> > >>> import skimage.data
> > >>> import skimage.transform
> > Traceback (most recent call last):
> >   File "<stdin>", line 1, in <module>
> >   File "skimage/transform/__init__.py", line 1, in <module>
> >     from ._hough_transform import (hough_ellipse, hough_line,
> > ImportError: No module named _hough_transform
> >
> >
> > This is on Mac OSX 10.8.4 with Python 2.7.2.  Is this an external
> library that needs installing from somewhere else?  I have already had to
> install tifffile separately to get skimage.data working (perhaps should be
> added to requirements.txt?).  I've tried a variety of approaches, but
> haven't had any success.
> >
> >
> > Any and all advice welcome!
> >
> >
> > Yours,
> > James.
>
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