[matplotlib-devel] Error in import matplotlib.pyplot using Python/C API

[Filipe S. <ma...@fi...>]

Hello,

First, thanks for this great library.

My name is Filipe Saraiva, I am developing a python backend for Cantor, 
the KDE mathematical software. More infos can be read in 
http://blog.filipesaraiva.info/?tag=gsoc2013-python-backend (in 
portuguese and english).

Currently I have a problem when I try import pyplot in Cantor. I am 
using Python 2.7.5 and matplotlib 1.3.0. The error is below:

import matplotlib.pyplot as plt
Traceback (most recent call last):
   File "<string>", line 1, in <module>
   File "/usr/lib64/python2.7/site-packages/matplotlib/pyplot.py", line 
98, in <module>
     _backend_mod, new_figure_manager, draw_if_interactive, _show = 
pylab_setup()
   File 
"/usr/lib64/python2.7/site-packages/matplotlib/backends/__init__.py", 
line 25, in pylab_setup
     globals(),locals(),[backend_name])
   File 
"/usr/lib64/python2.7/site-packages/matplotlib/backends/backend_qt4agg.py", 
line 19, in <module>
     _decref = ctypes.pythonapi.Py_DecRef
   File "/usr/lib64/python2.7/ctypes/__init__.py", line 378, in __getattr__
     func = self.__getitem__(name)
   File "/usr/lib64/python2.7/ctypes/__init__.py", line 383, in __getitem__
     func = self._FuncPtr((name_or_ordinal, self))
AttributeError: kde/bin/cantor: undefined symbol: Py_DecRef

Well, anyone have any idea about how can I fix it?

Thank you,


-- Filipe Saraiva http://filipesaraiva.info/