Install Numpy on Mac OS X Lion 10.7

Question

I need to install Numpy on my Mac OS X Lion 10.7. I googled a little bit, it seems like there are a lot of stuff needs to be installed. And some says I need install Xcode be

Answer 1

Lion comes with numpy installed. It should already be there:

$ python -c 'import numpy, numpy.version; print numpy, numpy.version.version'
 1.5.1