title: Summing elements in a sliding window - NumPy
body: <p>There is a numpy way to make a sum each three elements in the interval? For example:</p>
  
  <pre><code>import numpy as np
  mydata = np.array([4, 2, 3, 8, -6, 10])
  </code></pre>
  
  <p>I would like to get this result:</p>
  
  <pre><code>np.array([9, 13, 5, 12])
  </code></pre>