title: How to use np.arwhere with multiple conditions?
body: <p>I want to pick indices of 1,2,3,12 and 13 with np.argwhere or np.where.In both cases following code is not working. Is there any way to do this using these two commands or should I use it twice instead of using &amp; operator? </p>
  
  <pre><code>`a= np.array([1,2,3,4,10,12,13])
  b = np.argwhere((a&lt;4) &amp; (a&gt;10))
  c = np.where((a&lt;4) &amp; (a&gt;10))
  print(b)
  print(c)`
  </code></pre>