title: Python error numpy.int32 object is not iterable
body: <p>I have a below python code which detect person in frame. Once detected, it get the bounding box of the person which is <code>person_box</code>. From <code>person_box</code> I can get the <code>startX, startY</code> and <code>width height</code> of the bounding box. But in below code, in for loop, I am getting error as <code>numpy.int32 object is not iterable</code></p>
  
  <pre><code>person_box = person_detections[0, 0, i, 3:7] * np.array([W, H, W, H])
  person_box = person_box.astype(int)
  print(person_box)
  (startX, startY, endX, endY) = person_box.astype("int")
  width = endX - startX
  height = endY - startY
  
  for (startX, startY, width, height) in person_box:
      person_box = np.array([startX, startY, startX + width, startY + height])
  </code></pre>
  
  <p>output</p>
  
  <pre><code>[159 156 451 431]
  </code></pre>
  
  <p>I am not able to understand the error much as I am not much experienced with numpy arrays. Please help. Thanks.</p>