Ipywidgets: pip3 install requires older widgetsnbextension

[pleabargain]

ipywidgets 7.1.2 has requirement widgetsnbextension~=3.1.0, but you'll have widgetsnbextension 3.2.1 which is incompatible.

[jasongrout]

Are you trying to install ipywidgets 7.1.2, or 7.2? What command are you using? The setup.py should refer to the right version of widgetsnbextension in both cases.

[pleabargain]

command
pip3 freeze --local | grep -v '^\-e' | cut -d = -f 1 | xargs -n1 pip install --user -U

[jasongrout]

To me, it looks like it is a problem with the command pipeline you are using. You're cutting off the version number with cut, then upgrading to the latest version with xargs pip -U. pip doesn't force you to have a consistent environment - you need to install a compatible version manually, or use a package manager like conda that tries to keep the environment consistent for you.

[jasongrout]

The only thing I guess I'm confused about here is that your upgrade on all pip packages didn't seem to upgrade ipywidgets, if you're still on ipywidgets 7.1.2. I would look at your logs to see what happened to the ipywidgets upgrade.

Closing as resolved, but go ahead and post further questions here if you'd like help debugging your install.

[pleabargain]

I used
pip3 install --user --upgrade ipywidgets

and it seems to have fixed the issue
ipywidgets 7.2.1

thank you.

this issue is closed.