在熊猫情节图例中显示非ASCII（日语）字符

在熊猫情节图例中显示非ASCII（日语）字符

import numpy as npimport pandas as pdimport matplotlib.pyplot as pltimport matplotlib.font_manager as font_managerdf = pd.Dataframe( data=np.random.random( (2,2) ), columns=[u'é',u'日本'] )ax = df.plot()legend = ax.legend()font = font_manager.FontProperties(fname='/Users/user/Downloads/IPAfont00303/ipag.ttf')for text in legend.texts:    text.set_font_properties(font)plt.show()