Colour Palette generator using PythonMagick

main.py

#!/usr/bin/env python

from PythonMagick import Image, Color
from math import atan2, pi, pow,sqrt

img = Image('128x128', 'white')
xo = img.columns() / 2
yo = img.rows() / 2
for x in range(img.columns()):
    for y in range(img.rows()):
        h = (atan2( - (y - yo), x - xo) /(2*pi))*360
        l = (sqrt( pow(x-xo,2) + pow(y-yo,2)) / xo )*255

        c = Color('hsl(%i,255,%i)' %(h,l))
        img.pixelColor(x,y,c)

img.write("palette.png")