tensorflow，'PyQt5'错误。

不知道为什么出现乱七八糟的一大片红。也没有具体代码的位置，debug了半天，发现问题在PyQt5上。

Level 1:tensorflow:Registering TopK (<function _TopKGrad at 0x7f66919dba60>) in gradient.
Level 1:tensorflow:Registering CTCLoss (<function _CTCLossGrad at 0x7f66919dbae8>) in gradient.
Level 1:tensorflow:Registering CTCGreedyDecoder (None) in gradient.
Level 1:tensorflow:Registering CTCBeamSearchDecoder (None) in gradient.
Level 1:tensorflow:Registering SetSize (None) in gradient.
Level 1:tensorflow:Registering DenseToDenseSetOperation (None) in gradient.
Level 1:tensorflow:Registering DenseToSparseSetOperation (None) in gradient.
Level 1:tensorflow:Registering SparseToSparseSetOperation (None) in gradient.
Level 1:tensorflow:Registering SdcaFprint (None) in gradient.
Level 1:tensorflow:Registering SdcaOptimizer (None) in gradient.
Level 1:tensorflow:Registering SdcaShrinkL1 (None) in gradient.
Level 1:tensorflow:Registering RandomCrop (None) in gradient.
Level 1:tensorflow:Registering RGBToHSV (None) in gradient.
Level 1:tensorflow:Registering HSVToRGB (None) in gradient.
Level 1:tensorflow:Registering DrawBoundingBoxes (None) in gradient.
Level 1:tensorflow:Registering SampleDistortedBoundingBox (None) in gradient.
Level 1:tensorflow:Registering ExtractGlimpse (None) in gradient.
Level 1:tensorflow:Registering NonMaxSuppression (None) in gradient.
Level 1:tensorflow:Registering Fact (<function _set_call_cpp_shape_fn.<locals>.call_without_requiring at 0x7f6621b341e0>) in default shape functions.
Failed to enable GUI event loop integration for 'qt5'
Traceback (most recent call last):

可参考：https://stackoverflow.com/questions/2738879/cannot-import-pyqt4-qtgui

https://blog.csdn.net/wishchin/article/details/79359036

https://stackoverflow.com/questions/34008610/ipython-jupyter-qtconsole-fails-to-start-in-anaconda-2-4-0