1 import matplotlib.pyplot as plt 2 import numpy as np 3 x = np.arange(-10,11,1) 4 y = x*x 5 plt.plot(x,y) 6 plt.annotate('shis is the bootm', 7 xy=(0,1),xytext=(0,20), 8 arrowprops=dict(facecolor='r', 9 frac=0.2, 10 headwidth=30 11 ,width=10)) 12 13 14 plt.show()