from pylab import *

style = ['-', '--', '-.', ':']

x = [-1, 0, 1, 2]
y = [3, 2, 4, 1]

for s in style:
    i = style.index(s) + 1
    subplot(1, 4, i, axisbg='#EEB87E')     # code couleur html
    xticks([])
    yticks([])
    plot(x, y, 'b'+s)
    axis([-2,3,0,5])

show()