#Three lines to make our compiler able to draw: import sys import matplotlib matplotlib.use('Agg') import matplotlib.pyplot as plt import numpy as np x1 = np.array([0, 1, 2, 3]) y1 = np.array([3, 8, 1, 10]) x2 = np.array([0, 1, 2, 3]) y2 = np.array([6, 2, 7, 11]) plt.plot(x1, y1, x2, y2) plt.show() #Two lines to make our compiler able to draw: plt.savefig(sys.stdout.buffer) sys.stdout.flush()