title: I can't see the image when using display.Image in pycharm
body: <pre><code>workspace.SwitchWorkspace("net_test", True)
  print("Current blobs in the workspace: {}".format(workspace.Blobs()))
  net = core.Net("my_first_net")
  print("Current network proto:\n{}".format(net.Proto()))
  X = net.GaussianFill([], ["X"], mean=0.0, std=1.0, shape=[2, 3], run_once=0)
  print("New network proto:\n{}".format(net.Proto()))
  W = net.GaussianFill([], ["W"], mean=0.0, std=1.0, shape=[5, 3], run_once=0)
  b = net.ConstantFill([], ["b"], shape=[5, ], value=1.0, run_once=0)
  Y = net.FC([X, W, b], ["Y"])
  print("Current network proto:\n\n{}".format(net.Proto()))
  graph = net_drawer.GetPydotGraph(net, rankdir="LR")
  display.Image(graph.create_png(), width=800)
  </code></pre>
  
  <p>When I tested the caffe2, I used above code to see the net structure. But it didn't show the image. And this is what I get. <code>&lt;IPython.core.display.Image object&gt;</code> So how can I get the image? By the way, I use PyCharm with iPython to execute it.</p>