import matplotlib
import matplotlib.pyplot as plt
x = [1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 1, 1, 4, 4, 1, 1, 4]
y = [1, 2, 3, 4, 4, 3, 2, 1, 1, 2, 3, 4, 4, 3, 2, 1, 1, 2, 2, 3, 3, 4, 4]
MarkerStyle = "x"
% matplotlib inline
plt.plot(x, y, color="green")
plt.scatter(x, y, color="red", markerstyle="x")
plt.show()