pandas-matplotlib饼图

# -*-coding:utf-8 -*-
import pandas as pd
import  matplotlib.pyplot as plt
students = pd.read_excel("C:/Users/asus/Downloads/pandas/012/Students.xlsx",index_col='From')
print(students)

students['2017'].plot.pie(fontsize=8,counterclock=False,startangle=-270)
plt.title('Source of internationla',fontsize=16,fontweight='bold')
plt.ylabel('2017',fontsize=12,fontweight='bold')
plt.show()