Em Ter 10 Set 2013 19:21:01 BRT, Christoph Gohlke escreveu: > On 9/10/2013 1:54 PM, Eric Firing wrote: >> On 2013/09/10 5:43 AM, Michael Droettboom wrote: >>> Do any of those use ctypes? Try creating a minimal ctypes example and >>> see if that works. >> >> Mike, >> >> I was a bit horrified to see that ctypes import and usage in mpl; >> fortunately it is a workaround for a PySide bug, and should only be >> temporary, if it should be there at all. >> >> Eric >> > > Don't be horrified. The Ctypes workaround went trough the mailing list, > a PR with discussions including most core developers, testing, several > beta/rc/final versions, and real word usage. It fixes a problem that is > still present today without it: the Qt4Agg backend is practically > unusable with any recent version of PySide on CPython 3.x. Anyway, the > Ctypes code could be put in a try/except statement for environments that > don't support Ctypes or Python's C API.
If I understood correctly is there a problem with Qt4Agg in matplotlib 1.3? Another KDE developer typed: import matplotlib from matplotlib import pyplot as plt In my software (Cantor backend for python) and he got the error below: Traceback (most recent call last): File "", line 1, in File "/usr/lib/python2.7/site-packages/matplotlib/pyplot.py", line 98, in _backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup() File "/usr/lib/python2.7/site-packages/matplotlib/backends/__init__.py", line 25, in pylab_setup globals(),locals(),[backend_name]) File "/usr/lib/python2.7/site-packages/matplotlib/backends/backend_qt4agg.py", line 13, in from backend_qt4 import QtCore, QtGui, FigureManagerQT, FigureCanvasQT,\ File "/usr/lib/python2.7/site-packages/matplotlib/backends/backend_qt4.py", line 25, in from qt4_compat import QtCore, QtGui, _getSaveFileName, __version__ File "/usr/lib/python2.7/site-packages/matplotlib/backends/qt4_compat.py", line 36, in import sip ImportError: /usr/lib/python2.7/site-packages/sip.so: undefined symbol: PyExc_SystemError One more info, I removed matplotlib 1.3 and installed matplotlib 1.2 using pip and it worked properly. I can use matplotlib in this version. 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
