py27-wxpython-* not working

[Neil Voss]

I cannot get wxPython to work on my mac. I have tried installing all of 
the available ports (py27-wxpython-2.8, py27-wxpython-3.0), to no avail. 
I keep getting 'ImportError: No module named wx'

Can you provide me any tips to debug this? Google has not been helpful.

Relevant code below:

MacBook Pro (Retina 13-inch, Late 2013)
OS X El Capitan, v 10.11.4

# sudo port installed | grep -i wx
    mkvtoolnix @7.9.0_0+wxwidgets (active)
    py27-wxpython-3.0 @3.0.2.0_0 (active)
    wxPython-3.0 @3.0.2_5 (active)
    wxWidgets-3.0 @3.0.2_4 (active)
    wxWidgets-common @3.1.0_0 (active)
    wxWidgets_select @1.0_1 (active)# sudo port select --set wxWidgets 
wxWidgets-3.0
Selecting 'wxWidgets-3.0' for 'wxWidgets' succeeded. 'wxWidgets-3.0' is 
now active.

# python -c 'import wx'
Traceback (most recent call last):
    File "<string>", line 1, in <module>
ImportError: No module named wx

# which python
/opt/local/bin/python

# python -V
Python 2.7.10