matplotlib 简单饼图示例

# coding: utf-8
import matplotlib.pyplot as plt

plt.rcParams['font.sans-serif'] = ['SimHei']
plt.rcParams['axes.unicode_minus'] = False

# 数据
labels = ['A', 'B', 'C', 'D']
sizes = [30, 20, 25, 25]

# 绘制饼图
plt.pie(sizes, labels=labels, autopct='%1.1f%%')
plt.title('饼图示例')
plt.axis('equal')

plt.show()