[Matplotlib-users] how to use non-western characters in xkcd style?

hi, all
following is a simple plot. however, if I turn on xkcd(), the legend
shows Chinese as "??". I think this is because the Chinese characters
can not be found in a western font.

Is there a way to fix this?

thanks

[code begin]
#coding=utf-8
import math
from pylab import *
x=range(0, int(2*math.pi*1000))
x=[i/1000.0 for i in x]
y1=[math.sin(i) for i in x]

xkcd()

p=plot(x, y1)

legend(p, [u'sin曲线'])

rcParams['font.sans-serif'] = ['SimHei']    #set the default font to a
Chinese Font
#show()
savefig('%s.png' % __file__)