title: Python: Get FWHM from seaborn kdeplot
body: <p>I have used seaborn's kdeplot on some data.</p>
  <pre><code>import seaborn as sns
  import numpy as np
  sns.kdeplot(np.random.rand(100))
  </code></pre>
  <p>Is it possible to return the fwhm from the curve created?
  And if not, is there another way to calculate it?</p>