title: How to calculate Average of n numpy arrays
body: <p>I have 'n' numpy arrays each with shape (128,)
  How to get an average numpy array of shape (128,) for the list of numpy arrays.
  I have seen the documentation of numpy's average() and mean() which describes that the average is calculated for all the elements in a single numpy array rather than multiple or list of numpy arrays.
  Example</p>
  
  <pre><code>numpyArrayList = [ar1,ar2,ar3,ar4...arn]
  avgNumpyArray = avg(numpyArrayList)
  avgNumpyArray.shape
  </code></pre>
  
  <p>should give result as (128,)
  and this array should contain the average of all the numpy arrays</p>
  
  <p>Thanks in advance</p>