注释Simple03

import matplotlib.pyplot as pltfig, ax = plt.subplots(figsize=(3, 3))ann = ax.annotate("Test",xy=(0.2, 0.2), xycoords='data',xytext=(0.8, 0.8), textcoords='data',size=20, va="center", ha="center",bbox=dict(boxstyle="round4", fc="w"),arrowprops=dict(arrowstyle="-|>",connectionstyle="arc3,rad=-0.2",fc="w"),)plt.show()
