Re: [matplotlib-devel] 'NoneType' object has no attribute 'endswith' when running tests in a chroot

[Michael D. <md...@st...>]

On 05/20/2012 12:51 PM, Sandro Tosi wrote:
> Hello,
> I've been trying to fix this problem for hours, and it's getting me
> mad but to no conclusion, so I'm asking here.
>
> In Debian we build our packges in a chroot, with all the minimum
> dependecies needed to build the package (to guarantee reproducibility
> and avoid weird effect of local installed packages), and so also the
> unittests are runt here. While enabling the matplotlib unittest in
> that chroot, I'm getting this error:
>
> ======================================================================
> ERROR: matplotlib.tests.test_axes.test_arc_ellipse.test
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>    File "/usr/lib/python2.6/dist-packages/nose/case.py", line 197, in runTest
>      self.test(*self.arg)
>    File "/tmp/buildd/matplotlib-1.1.1~rc1/build/lib.linux-x86_64-2.6/matplotlib/testing/decorators.py",
> line 36, in failer
>      result = f(*args, **kwargs)
>    File "/tmp/buildd/matplotlib-1.1.1~rc1/build/lib.linux-x86_64-2.6/matplotlib/testing/decorators.py",
> line 128, in do_test
>      figure.savefig(actual_fname)
>    File "/tmp/buildd/matplotlib-1.1.1~rc1/build/lib.linux-x86_64-2.6/matplotlib/figure.py",
> line 1185, in savefig
>      self.canvas.print_figure(*args, **kwargs)
>    File "/tmp/buildd/matplotlib-1.1.1~rc1/build/lib.linux-x86_64-2.6/matplotlib/backend_bases.py",
> line 2021, in print_figure
>      **kwargs)
>    File "/tmp/buildd/matplotlib-1.1.1~rc1/build/lib.linux-x86_64-2.6/matplotlib/backend_bases.py",
> line 1789, in print_pdf
>      return pdf.print_pdf(*args, **kwargs)
>    File "/tmp/buildd/matplotlib-1.1.1~rc1/build/lib.linux-x86_64-2.6/matplotlib/backends/backend_pdf.py",
> line 2180, in print_pdf
>      file = PdfFile(filename)
>    File "/tmp/buildd/matplotlib-1.1.1~rc1/build/lib.linux-x86_64-2.6/matplotlib/backends/backend_pdf.py",
> line 378, in __init__
>      rcParams['datapath'], 'fonts', 'pdfcorefonts')
>    File "/usr/lib/python2.6/posixpath.py", line 67, in join
>      elif path == '' or path.endswith('/'):
> AttributeError: 'NoneType' object has no attribute 'endswith'

I'm not sure about this one.  Could it be due to not having a font cache 
in ~/.matplotlib?

>
> (repeated for several times, it seems like a patter, given the output
> of the test execution is:
>
> ..K.............EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK.EK..EK.EK.EK.EK.EK.EK.EKK...EK...EK.EK..EKEK..EK.EK.EK.EK.EK..EK.EK.EK[....]
>
> and so on) so it seems the code can't find the datapath location. In
> order to fix that, I'm calling the test suite like this:

This is most likely due to some of the testing dependencies not being 
present.  matplotlib uses ghostscript for rendering PDF and inkscape for 
rendering SVG (but only when testing).  See this documentation:

http://matplotlib.sourceforge.net/devel/coding_guide.html#testing

(Note the the PIL requirement goes away with matplotlib git master -- 
it's only required for the 1.1.x series).

>
> PYTHONPATH=build/lib.linux-x86_64-2.6 \
>          MATPLOTLIBDATA=/tmp/buildd/matplotlib-1.1.1~rc1/lib/matplotlib/mpl-data/
> \
>          MPLCONFIGDIR=. \
>                  python2.6 -c "import matplotlib as m ; m.test(verbosity=1)"
>
> and in . there's a matplotlibrc file with simply:
>
>    datapath : /tmp/buildd/matplotlib-1.1.1~rc1/lib/matplotlib/mpl-data/
>
> in it; but still I got all of these failures. Anyone knows where I can
> look to fix that?
>
> Thanks in advance,
Cheers,
Mike