fast fourier transform python

1# This is from the question
2from scipy.fftpack import fft
3
4# Number of samplepoints
5N = 600
6
7# Sample spacing
8T = 1.0 / 800.0
9x = np.linspace(0.0, N*T, N)
10y = np.sin(50.0 * 2.0*np.pi*x) + 0.5*np.sin(80.0 * 2.0*np.pi*x)
11yf = fft(y)