Widgets don't display on jupyterlab 4 / jupyter notebook 7 #3968
Comments
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Similar behavior on fresh install jupyter lab 4.3.4, ipwidgets 8.1.5. Code example from ipwidgets: import ipywidgets as widgets
slider = widgets.IntSlider( value=7, min=0, max=10, step=1, description='Test:' )
sliderResult is text only, no widget rendered: Same result: System infoEnvironment |
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@BwandoWando : Apologies if I confused the issue, as the use cases are somewhat distinct. However the underlying behavior seems the same as reported by @mattragoza. If there is any clarification I can provide to progress toward resolution, please don't hesitate. Thank you. |
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I currently am not able to get interactive figures with matplotlib and ipympl, even in old notebooks in which it worked (using I believe this might be related to this issue? Package versions: |
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Just tried to update to jupyterlab 4.4.0a2, seems to be fixed in this pre-release version, at least for ipympl. |
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Also tried upgrade to jupyterlab 4.4.0a2, same result. No widgets rendered. Moved back to 4.3.4 |
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This is perhaps related to Java script. Testing Java Script at the debug console seems fine. For example in the debugger console: alert('Alert')pops up the box:
This cell runs fine: import ipywidgets as widgets
from IPython.display import displayWhen execute this in following cell: w = widgets.IntSlider()The browser inspect shows: Which is this code in default.js /**
* Handle a `comm_open` kernel message.
*/
async _handleCommOpen(msg) {
this._assertCurrentMessage(msg);
const content = msg.content;
const comm = new comm_1.CommHandler(content.target_name, content.comm_id, this, () => {
this._unregisterComm(content.comm_id);
});
this._comms.set(content.comm_id, comm);
try {
const target = await Private.loadObject(content.target_name, content.target_module, this._targetRegistry);
await target(comm, msg);
}
catch (e) {
// Close the comm asynchronously. We cannot block message processing on
// kernel messages to wait for another kernel message.
comm.close();
console.error('Exception opening new comm');
throw e;
}
}This is as far as I can get. Any suggestions for progress appreciated. Installed : |
Description
I am trying to create interactive plots in jupyter notebook in a remote computing environment, which I am accessing through OnDemand. The system recently updated to notebook version 7, which to my understanding is effectively based on jupyter lab version 4 and no longer support notebook extensions, so my interactive plotting with %matplotlib notebook no longer works. I first tried %matplotlib ipympl, but a simple test plot only displays "Loading widget..." with no other output. Then I tried %matplotlib widget, with the same result. Importing ipywidgets and showing a simple widget gives me the same result too, which leads me to believe it is a problem with my ipywidgets install.
Reproduce
I ssh into the remote cluster and create a clean environment, then register it as an ipython kernel:
Then I go to the OnDemand portal and launch a jupyter lab job, and I run the following:
I see the text "Loading widget..." below the cell, with nothing else displayed.
Expected behavior
I expect to see an interactive Button widget.
Context
Command Line Output
Browser Output
If using JupyterLab
Installed Labextensions
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