import scipy.stats as stats
x1 = np.array([-7, -5, 1, 4, 5.])
kde = stats.gaussian_kde(x1)
xs = np.linspace(-10, 10, num=50)
y1 = kde(xs)
kde.set_bandwidth(bw_method='silverman')
y2 = kde(xs)
kde.set_bandwidth(bw_method=kde.factor / 3.)
y3 = kde(xs)

import matplotlib.pyplot as plt
fig, ax = plt.subplots()
ax.plot(x1, np.ones(x1.shape) / (4. * x1.size), 'bo',
        label='Data points (rescaled)')
ax.plot(xs, y1, label='Scott (default)')
ax.plot(xs, y2, label='Silverman')
ax.plot(xs, y3, label='Const (1/3 * Silverman)')
ax.legend()
plt.show()