I had the same problem, but I was able to fix it by switching to Python 2.7.
I am using Conda, which has a good guide for creating a Python 2.7 environment, while still being able to easily switch to Python 3.5: http://conda.pydata.org/docs/py2or3.html
If you are not using Conda, I am sure that there is still the opportunity to return to Python 2.7, but I am not sure that this means that you need to get rid of Python 3.5. In any case, immediately switching to 2.7, I immediately fixed my problem.
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