1"""
2=======
3Arctest
4=======
5
6"""
7import matplotlib.pyplot as plt
8import numpy as np
9
10
11def f(t):
12    'A damped exponential'
13    s1 = np.cos(2 * np.pi * t)
14    e1 = np.exp(-t)
15    return s1 * e1
16
17
18t1 = np.arange(0.0, 5.0, .2)
19
20l = plt.plot(t1, f(t1), 'ro')
21plt.setp(l, markersize=30)
22plt.setp(l, markerfacecolor='C0')
23
24plt.show()
25