# 数据准备
 housegrp_dis = house.groupby(['district'], as_index= False)['title'].count()
 #print(housegrp_dis)
 
 #使用饼图可视化每个行政区域的可租赁房源百分比
 plt.axes(aspect=1)
 explode = [0, 0.1, 0]
 plt.pie(housegrp_dis['title'], labels=housegrp_dis['district'],explode=explode,autopct='%3.1f %%',shadow=True, labeldistance=1.1, startangle= 90,pctdistance= 0.6 )
 plt.title(u"温州市各行政区划可租赁房源数分析(饼图)")
 plt.show()