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Launching a Jupyter notebook on Mac OSⅩ when the following error message appears:

OSError: [Errno 49] Can't assign requested address

Upgrade

pip3 install --upgrade jupyter notebook tornado traitlets

Launch a notebook

Because of something a notebook on Mac OSⅩ will not start without specifying the local IP.

jupyter notebook --ip 127.0.0.1 --port 8888
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