Help getting iPython to run from the OSX terminal

Got a direct from stackoverflow.com to ask the inquiry below.

I'm experiencing the matplotlib documents and also prepared to make use of the iPython interactive Python shell with ipython -pylab. Nonetheless I get this:

MBP:~ Me$ ipython -pylab
-bash: ipython: command not found

Did I fall short to install iPython? I made use of easy_install as suggested.

Any kind of suggestions?

Update

Thought I would certainly simply claim that I located the iPython "executable" in /opt/local/Library/Frameworks/Python.framework/Versions/2.6/bin after doing a Spotlight search.

Still a little overwhelmed regarding what to do.