【可视化】pandas与matplotlib绘制环形饼图

导入相关库 import pandas as pd import matplotlib.pyplot as plt % matplotlib inline   生产测试数据 data = pd.DataFrame([[20,50,10,15],[30,30,20,40]],columns=['A','B','C','D']) 数据：python   A B C D 0 20 50 10 15 1

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