matplotlib 3.5.1

>>> """
=================
Annotate Simple02
=================

"""
... import matplotlib.pyplot as plt
... 
... 
... fig, ax = plt.subplots(figsize=(3, 3))
... 
... ax.annotate("Test",
...  xy=(0.2, 0.2), xycoords='data',
...  xytext=(0.8, 0.8), textcoords='data',
...  size=20, va="center", ha="center",
...  arrowprops=dict(arrowstyle="simple",
...  connectionstyle="arc3,rad=-0.2"),
...  )
... 
... plt.show()
...