Re: [Plplot-devel] Python3

[Hazen B. <hba...@ma...>]

On 04/21/2017 03:42 AM, Alan W. Irwin wrote:
>
> Hi Hazen:
>
> Could you please test commit 578b028?  For that commit I made some
> modest progress with Python 3 for both pyqt4 and pyqt5, but I have hit
> a roadblock with a run-time error saying the plplot_pyqt[45] extension
> modules are not initialized properly when the script tries to import
> one of those modules.  The sip, pyqt[45], and python3 software
> packages are all supposed to work well together for their latest
> versions according to my google search results, but it is possible the
> Debian Jessie versions of these software packages are too old and
> buggy which is why I am asking you to test this commit by attempting
> to build the test_pyqt[45]_example target (depending on whether your
> build system finds Qt4 or Qt5) for both the python2 and python3 cases
> (where the former builds and runs plplot_pyqt[45] without issues here,
> but the latter case only builds these extension modules without
> obvious issues but runs into initialization errors at run time).
>
> The test_pyqt4_example target build all
> prerequisites with success but fails the final run-time test.
>
> Here is the relevant error message if I attempt to do the
> run-time test by hand:
>
> software@raven> python3 examples/python/pyqt4_example.py Traceback (most
> recent call last):
>   File "examples/python/pyqt4_example.py", line 33, in <module>
>     import plplot_pyqt4
> ImportError: dynamic module does not define init function
> (PyInit_plplot_pyqt4)
>
> Do you get a similar error there or success?

It works for me with Python3 and pyqt5. My understanding is that error 
messages like you are seeing mean that the C library was built for the 
wrong version of Python.

I've attached my CMakeCache.txt file.

-Hazen