title: Application Launch Error when trying to launch Anaconda
body: <p>Have  tried to launch Python 3.6 in the latest version of Anaconda (Anaconda 2019.10). This was to download the Tensorflow and Keras packages. I have installed them from the packages installment page and it seems like they installed successfully, but when I try to finally launch Jupiter Notebook in this environment, I get the following error.</p>
  
  <blockquote>
    <p>Traceback (most recent call last):
    File "C:\Users\andre_000\Anaconda3\envs\snakes\Scripts\jupyter-notebook->script.py", line 6, in 
    from notebook.notebookapp import main
    File "C:\Users\andre_000\Anaconda3\envs\snakes\lib\site->packages\notebook\notebookapp.py", line 49, in 
    from zmq.eventloop import ioloop
    File "C:\Users\andre_000\Anaconda3\envs\snakes\lib\site->packages\zmq\eventloop__init__.py", line 3, in 
    from zmq.eventloop.ioloop import IOLoop
    File "C:\Users\andre_000\Anaconda3\envs\snakes\lib\site->packages\zmq\eventloop\ioloop.py", line 78, in 
    while _IOLoop.configurable_default() is not _IOLoop:
    File "C:\Users\andre_000\Anaconda3\envs\snakes\lib\site->packages\tornado\ioloop.py", line 328, in configurable_default
    from tornado.platform.asyncio import AsyncIOLoop
    File "C:\Users\andre_000\Anaconda3\envs\snakes\lib\site->packages\tornado\platform\asyncio.py", line 34, in 
    asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
    AttributeError: module 'asyncio' has no attribute >'WindowsSelectorEventLoopPolicy'</p>
  </blockquote>
  
  <p>Is there anything I could do about this, been trying to install Tensorflow and their related packages in the anaconda environment for a few days. Proving to be very difficult.</p>