deja vu: nglview widget does not appear

[davidlmobley]

I'm having a repeat of a past issue -- my nglview widget is not appearing (echoing #599 ). I had it working for a while, but on a new computer with a clean conda install, well, it's just not showing up.

I'm using the minimal example from the main README.md; version info and etcetera in attached screenshot. Any advice?

[davidlmobley]

(Note, I HAVE enabled the relevant extension(s), jupyter-nbextension enable --py --sys-prefix widgetsnbextension and jupyter-nbextension enable nglview --py --sys-prefix)

It would be really, REALLY nice if the widget were able to provide some information about why it's not displaying rather than just, er, not displaying.

[hainm]

It would be really, REALLY nice if the widget were able to provide some information about why it's not displaying rather than just, er, not displaying.

hey @davidlmobley, sorry about your trouble. I would love to have nglview giving more detail but that's what from https://github.com/jupyter-widgets/ipywidgets. We have no control with that, and just hope ipywidgets will be much more stable (it's being actually).

For debugging, can you: Right click in your notebook page -> Inspect -> Console and capture the log so I can see the javascript log. see example below:

[hainm]

You might want to read debug experience from an user here: https://github.com/SBRG/ssbio/wiki/Troubleshooting#nglviewer-fresh-install-tips

And sorry again, this is what we need to live with until Jupyter (notebook, ipywidgets, ...) ecosystem have more stable API.

[davidlmobley]

OK, thanks. I've basically tried everything in the debug experience, though I suppose I can repeat it if I have to.

Here's a console log. Not immediately that helpful to me; most of the warning messages seem to concer a Table of Contents (TOC) extension I sometimes use.
log.txt.gz

It's also telling me that ipywidgets is not available, which is perplexing, since import ipywidgets works and I can get the version just fine. Also,

import ipywidgets 
ipywidgets.Text("hello") 

works fine too.

Thanks.

[hainm]

Class NGLModel not found in module nglview-js-widgets

This mean that the ipywidgets picked up old nglview-js-widgets Javascript package (0.6 version).
The NGLModel only exists in 1.0 version.

So try to find any existing nglview-js-widgets folder and delete them then install nglview again.

- rm -rf ~/.local/share/jupyter/nbextensions/nglview-js-widgets/  # if you have it
- try to find in `$HOME/Library/Jupyter` too

If you run 'jupyter notebook --debug', you will see a series of folders the notebook will looking for. That's good start to find nglview-js-widgets. good luck.

[davidlmobley]

Thanks. Apparently I did have an nglview-js-widgets lingering somewhere in my Library tree (I'd cleaned everything in the anaconda directory but misssed that one).

Thanks.

[ppxasjsm]

Thanks @hainm! I did have some files hiding away in $HOME/Library/Jupyter. That did the trick!

[palashd1]

The following commands worked for me

$jupyter-nbextension enable --py --user widgetsnbextension

$jupyter-nbextension enable --py --user nglview

[mandar5335]

The following commands worked for me

$jupyter-nbextension enable --py --user widgetsnbextension

$jupyter-nbextension enable --py --user nglview

This worked in my case also, thanks.

[hainm]

Please always use —sys-prefix instead of —user from now.

…

On Wed, Aug 7, 2019 at 8:35 AM mandar5335 ***@***.***> wrote: The following commands worked for me $jupyter-nbextension enable --py --user widgetsnbextension $jupyter-nbextension enable --py --user nglview This worked in my case also, thanks. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#718>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABB645INTQAFEXT4L4NVLDDQDK6SJANCNFSM4EEVFHUA> .

[mandar5335]

Please always use —sys-prefix instead of —user from now.
…
On Wed, Aug 7, 2019 at 8:35 AM mandar5335 @.***> wrote: The following commands worked for me $jupyter-nbextension enable --py --user widgetsnbextension $jupyter-nbextension enable --py --user nglview This worked in my case also, thanks. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#718?email_source=notifications&email_token=ABB645PA7OPH4UKJ22UEE6TQDK6SJA5CNFSM4EEVFHUKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD3YH2FQ#issuecomment-519077142>, or mute the thread https://github.com/notifications/unsubscribe-auth/ABB645INTQAFEXT4L4NVLDDQDK6SJANCNFSM4EEVFHUA .

thanks @hainm , will do that. :)