["python","windows","jupyter-notebook","tornado"]
Jupyter Notebook with Python 3.8 - NotImplementedError

Upgraded recently to Python 3.8, and installed jupyter. However, when trying to run jupyter notebook getting the following error: File "c:\users\user\appdata\local\programs\python\python38\lib\site-packages\tornado\platform\asyncio.py", line 99, in add_handler self.asyncio_loop.add_reader(fd, self._handle_events, fd, IOLoop.READ) File "c:\users\user\appdata\local\programs\python\python38\lib\asyncio\events.py", line 501, in add_reader raise NotImplementedError NotImplementedError I know Python 3.8 on windows switched to ProactorEventLoop by default, so I suspect it is related to this. Jupyter does not support Python 3.8 at the moment? Is there a work around?
EDIT This issue exists in older versions of Jupyter Notebook and was fixed in version 6.0.3 (released 2020-01-21). To upgrade to the latest version run: pip install notebook --upgrade Following on this issue through GitHub, it seems the problem is related to the tornado server that jupyter uses. For those that can't wait for an official fix, I was able to get it working by editing the file tornado/platform/asyncio.py, by adding: import sys if sys.platform == 'win32': asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy()) After the main imports. I expect an official fix for this soon, however.