饼图

import pandas as pd
import matplotlib.pyplot as plt

students=pd.read_excel('c:/Temp/Students.xlsx',index_col='From')
print(students)

students['2017'].plot.pie(fontsize=8,counterclock=False,startangle=-270)  #数字不可以students.2017 #Fromm 列可以 students.From  #counterclock是否逆时针 ，startangle起始∠
plt.title ('Sourec of internation students1', fontsize=16,fontweight='bold')  #fontweight字体粗细
plt.ylabel('2017',fontsize=12,fontweight='bold')



plt.show()