title: DFT matrix in python
body: <p>What's the easiest way to get the <a href="http://en.wikipedia.org/wiki/DFT_matrix">DFT matrix</a> for 2-d DFT in python? I could not find such function in <a href="http://docs.scipy.org/doc/numpy/reference/routines.fft.html">numpy.fft</a>. Thanks!</p>