[igraph] macport installation of python igraph

[wanderingaengus]

Particulars: 
OS X: 10.68 
Python: 2.7.2 

Using MacPorts to install igraph (after unsuccessfully trying to install using 
binaries) 

curiosity:$ sudo -E port install py27-igraph 
Password: 
----> etc. 
----> etc. 

no errors on installation except warning: 
--------> 
To make python 2.7 the default (i.e. the version you get when you run 
'python'), please run: sudo port select --set python python27 

Unfortunately when I try to use igraph I get the infamous error response: 

curiosity:$ python 
Python 2.7.2 (v2.7.2:8527427914a2, Jun 11 2011, 15:22:34) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin 
Type "help", "copyright", "credits" or "license" for more information. 
>>> from igraph import * 
Traceback (most recent call last): 
File "<stdin>", line 1, in <module> 
ImportError: No module named igraph 
>>> exit() 


I suspect this is at least partly a path problem, but I'm running into a wall 
about what/where things should be.

Thanks in advance.