Question - Can i use ipywidgets without a notebook

[DonJayamanne]

Can I use the Jupyter_client api to execute code against a kernel and still use ipywidgets?

Currently when I do this, I get the following response from the Kernel:

Widget Javascript not detected. It may not be installed properly. Did you enable the widgetsnbextension? If not, then run "jupyter nbextension enable --py --sys-prefix widgetsnbextension"

Note: The widgetsnbextension is already enabled.

jupyter nbextension enable --py --sys-prefix widgetsnbextension
Enabling notebook extension jupyter-js-widgets/extension...
      - Validating: OK

[SylvainCorlay]

It is possible to embed widgets in a webpage, just like what you can see here:

http://jupyter.org/widgets

The equivalent with a connected back end is not supported yet.

[DonJayamanne]

@SylvainCorlay
When you say "It is possible to embed widgets in a webpage"
Don't you mean notebook instead of webpage

[SylvainCorlay]

No I mean that you can embed widgets in your blog or personal website, just like on the jupyter.org website.

[DonJayamanne]

@SylvainCorlay
How's that done? Is that just some hardcoded JavaScript (markup in the webpage) or is the following Python code (executed on the server) to generate the javascript?

from ipyleaflet import Map
Map(center=[34.6252978589571, -77.34580993652344], zoom=10)

Looking at the examples, they are executed in notebooks (which in turn generate javascript rendered on the webpage).

The widgets to my knowledge is basically a bunch of javascript code + data generated by the Python code executed. So, where is this python code being executed?

[SylvainCorlay]

You author your widgets / visualization from the notebook. Then in the menu Widgets -> Embed Widgets will give you a copy-pastable snippet of HTML code.

[jasongrout]

Looking at the examples, they are executed in notebooks (which in turn generate javascript rendered on the webpage).

The javascript is loaded independently, it's not generated by the python. The state of the widgets is communicated back and forth with python. You can embed the javascript + initial state (which provides some interaction that is entirely in javascript). Check out the examples in the jupyter-js-widgets repo, or use the 'Embed Widgets' feature Sylvain mentioned above.

You can also have javascript that starts up a kernel on a python server somewhere and communicates with it, embedding the widgets from that. See the web3 example for this.

[jasongrout]

Closing as answered - please reopen if you have more questions or want to continue the discussion.