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Interact in Jupyterlab vs Jupyter

asked 2020-03-09 06:09:38 +0100

dsejas gravatar image

Hello, Sage community!

I find Jupyterlab to be more comfortable than Jupyter, so I installed it with

sage -pip install jupyterlab

and I execute it with

sage -n jupyterlab

Everything work well, except when I try to execute an interact, in which case, no sliders, no selection boxes, etc. appear. However, if I use Jupyter with

sage -n jupyter

the interact works well.

Here is a minimal working example:

def const(k = slider(-5,5,0.1,1,label='Constant')):

In this particular case, I obtain in Jupyterlab just 1.00000000000000 without any controls, nor the possibility to change the value of k.

Can somebody explain why it is not possible to use interacts in Jupyterlab while it is possible in Jupyter?

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Thanks for reporting! This is now tracked at

slelievre gravatar imageslelievre ( 2020-07-29 14:17:49 +0100 )edit

Update: the ticket

was merged in Sage 9.2.beta11.

slelievre gravatar imageslelievre ( 2020-09-03 03:11:30 +0100 )edit

2 Answers

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answered 2020-09-03 03:10:13 +0100

slelievre gravatar image

Starting from Sage 9.2.beta11, you can install JupyterLab and its jupyterlab-widgets extension for Sage:

$ sage -i jupyterlab_widgets

and then the interact in the question works fine!

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Thank you very much, @slelievre! In order to help other users that have this problem, I am selecting your answer as correct.

dsejas gravatar imagedsejas ( 2020-11-11 00:57:26 +0100 )edit

answered 2020-03-19 06:42:01 +0100

nbruin gravatar image

It looks like lab takes a different approach than notebook regarding javascript in output cells. It would be nice to have a more official source, but the following Q/A seems to contain some valuable info:

it looks like there's some work to do once sagemath starts moving to lab in earnest.

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Thank you very much for your help, @nbruin! Although I had selected your answer as correct the first time, given the up-to-date answer by slelievre, I had to make a re-selection of answers, putting slelievre's answer as correct for the good of other users with the same problem.

dsejas gravatar imagedsejas ( 2020-11-11 01:03:54 +0100 )edit

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Asked: 2020-03-09 06:09:38 +0100

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Last updated: Sep 03 '20