import etframes
from pylab import *


ys = [1,1.5,2,2.5,5]
xs = range(len(ys))


scatter(xs,ys)

def minmax(data):
    return min(data), max(data)

etframes.add_range_frame(gca(),
                         xbounds=minmax(xs),
                         ybounds=minmax(ys))

show()