problems with wxPython in mac os x

[JordiVillaFreixa]

jvilla olea-imim-es ~/merda/macroevolve/src 588 $ python macroevolve.py
Traceback (most recent call last):
File "macroevolve.py", line 20, in
from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as FigureCanvas
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/backends/backend_wxagg.py", line 23, in
import backend_wx # already uses wxversion.ensureMinimal('2.8')
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/backends/backend_wx.py", line 65, in
raise ImportError(missingwx)
ImportError: Matplotlib backend_wx and backend_wxagg require wxPython >=2.8

[mandorman]

Be sure that you have already installed wxPython correctly at your interpret (2.7+ or higher).
b.g. if your python interpret is 2.7
(to know wich python and where it is installed, in your terminal, as well as in linux, you could do "which python2.7")

$ python (or /usr/bin/python2.7)
Python 2.7.2+ (default, Oct 4 2011, 20:03:08)

import wx

If you recive an error when you try to "import wx" it means that you have no properly installed wxPython on your MacOs.

Then if it is properly installed, do the same :
$ python (or /usr/bin/python2.7)
Python 2.7.2+ (default, Oct 4 2011, 20:03:08)

from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg as FigureCanvas

[JordiVillaFreixa]

This is weird, but it may be related to the architecture. Do not worry, I'll check it in ubuntu, where it seems to work just fine.

jvilla olea-imim-es ~/Downloads/scitools-0.8 603 $ python
Python 2.7.2 (default, Jan 25 2012, 17:21:50)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.

import wx
Traceback (most recent call last):
File "", line 1, in
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/wx-2.8-mac-unicode/wx/init.py", line 45, in
from wx._core import *
File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/wx-2.8-mac-unicode/wx/_core.py", line 4, in
import core
ImportError: dlopen(/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/wx-2.8-mac-unicode/wx/core.so, 2): no suitable image found. Did find:
/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/wx-2.8-mac-unicode/wx/core.so: mach-o, but wrong architecture

[mandorman]

Ok. Usually the tricky point in this cases is due to have several python interpreters in the system and when you try to update a lib automatically (from packages) it updates the wrong interpreter.