饼图

import matplotlib.pyplot as plt# The slices will be ordered and plotted counter-clockwise.labels = 'Frogs', 'Hogs', 'Dogs', 'Logs'sizes = [15, 30, 45, 10]colors = ['yellowgreen', 'gold', 'lightskyblue', 'lightcoral']explode = (0, 0.1, 0, 0)  # only "explode" the 2nd slice (i.e. 'Hogs')plt.pie(sizes, explode=explode, labels=labels, colors=colors,        autopct='%1.1f%%', shadow=True, startangle=90)# Set aspect ratio to be equal so that pie is drawn as a circle.plt.axis('equal')plt.savefig('D:\\pie.png')plt.show()

 结果