Em Ter 10 Set 2013 09:33:37 BRT, Michael Droettboom escreveu: > On 09/10/2013 08:23 AM, Filipe Saraiva wrote: >> Em Ter 03 Set 2013 17:02:28 BRT, Benjamin Root escreveu: >>> On Mon, Sep 2, 2013 at 12:27 AM, Filipe Saraiva >>> <m...@filipesaraiva.info <mailto:m...@filipesaraiva.info>> wrote: >>> >>> 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, >>> >>> >>> My only guess is that there is some sort of linking/build error. >>> Perhaps the python-qt4 library was built and linked against a >>> different python on your system? >>> >>> Cheers! >>> Ben Root >> Really I don't know. I will question it to matplotlib maintainer. >> >> The pyplot import in python iteractive mode (python terminal) is >> working properly. I can run a matplotlib example using pyplot in this >> mode. I get the error just in Python/C API. >> > > It looks like it's failing inside of ctypes. How are you including > Python in your application. Perhaps the ctypes module (which is a C > extension module that comes in the Python standard library) is not being > included or found. I'm at a bit of a loss, but this seems like more of > a general "embedding python in a C application" question, which you > might try asking on the Python mailing list. > > Mike >
I am using my code with several python modules and I can not get any error. I tried scipy, numpy, Spade, matplotlib... interesting, I don't get error when I import matplotlib.animation. You can see reports of several uses of python commands and modules in my software accessing my blog in http://blog.filipesaraiva.info/?tag=gsoc2013-python-backend Interesting, I used with success pyplot in the first version of this backend, last year. The blogpost have a picture of this http://blog.filipesaraiva.info/?p=779. Well, I ask to another KDE developers for test my code and verify if the pyplot error that I am getting is reproducible. Thank you, -- Filipe Saraiva http://filipesaraiva.info/ ------------------------------------------------------------------------------ How ServiceNow helps IT people transform IT departments: 1. Consolidate legacy IT systems to a single system of record for IT 2. Standardize and globalize service processes across IT 3. Implement zero-touch automation to replace manual, redundant tasks http://pubads.g.doubleclick.net/gampad/clk?id=51271111&iu=/4140/ostg.clktrk _______________________________________________ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
