matplotlib图例中文显示问题

import numpy as np

import pandas as pd

from pandas import DataFrame,Series

import matplotlib

import matplotlib.pyplot as plt

import pylab as pl

#simkai.ttf 是电脑控制面板里字体的一种，这里是楷体

chinese =matplotlib.font_manager.FontProperties(fname='C:\Windows\Fonts\simkai.ttf')

x1 = [1, 2, 3, 4, 5]

y1 = [1, 4, 9, 16, 25]

x2 = [1, 2, 4, 6, 8]

y2 = [2, 4, 8, 12, 16]

plot1 = pl.plot(x1, y1, 'r',label=u'红')

plot2 = pl.plot(x2, y2, 'go',label=u'绿')

plt.legend(prop=chinese)

Out[31]: <matplotlib.legend.Legend at 0xe1ad390>