# 这三行代码初始化Python绘图环境:
import sys
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
import numpy as np
# 准备饼图数据:
y = np.array([35, 25, 25, 15]) # 饼图各区块占比
mylabels = ["苹果", "香蕉", "樱桃", "枣子"] # 区块标签
mycolors = ["black", "hotpink", "b", "#4CAF50"] # 颜色参数
# 绘制饼图:
plt.pie(y, labels = mylabels, colors = mycolors)
plt.show() # 显示图表
# 图形输出指令:
plt.savefig(sys.stdout.buffer)
sys.stdout.flush()