W3School TIY Editor

# 这三行代码使编译器能够绘图： import sys import matplotlib matplotlib.use('Agg') import matplotlib.pyplot as plt # 数据点坐标和类别标签： x = [4, 5, 10, 4, 3, 11, 14, 8, 10, 12] y = [21, 19, 24, 17, 16, 25, 24, 22, 21, 21] classes = [0, 0, 1, 0, 0, 1, 1, 0, 1, 1] # 绘制散点图（按类别着色）： plt.scatter(x, y, c=classes) plt.show() # 这两行代码使编译器能够输出图形： plt.savefig(sys.stdout.buffer) sys.stdout.flush()