Unable to load @finos/perspective-jupyterlab:~0.10.0

[kimmolinna]

PercpectiveWidget is working nicely via localhost/lab, but when I try to use it inside Visual Studio Code Insiders I will get the following error message:

Widgets require us to download supporting files from a 3rd party website. (Error loading @finos/perspective-jupyterlab:~0.10.0).

I used to the following example to notice a problem

import pandas as pd
import numpy as np
from perspective import Table, PerspectiveWidget
arrays = [np.array(['bar', 'bar', 'bar', 'bar', 'baz', 'baz', 'baz', 'baz', 'foo', 'foo', 'foo', 'foo', 'qux', 'qux', 'qux', 'qux']),
          np.array(['one', 'one', 'two', 'two', 'one', 'one', 'two', 'two', 'one', 'one', 'two', 'two', 'one', 'one', 'two', 'two']),
          np.array(['X', 'Y', 'X', 'Y', 'X', 'Y', 'X', 'Y', 'X', 'Y', 'X', 'Y', 'X', 'Y', 'X', 'Y'])]
tuples = list(zip(*arrays))
index = pd.MultiIndex.from_tuples(tuples, names=['first', 'second', 'third',])

df_col = pd.DataFrame(np.random.randn(3, 16), index=['A', 'B', 'C'], columns=index)
PerspectiveWidget(df_col)

I'm using JupyterLab 3.1.1 with Jupyter Server 1.10.1 and Visual Studio Code - Insiders is 1.59.0-insider on Windows 10 Enterprise 1908 and

And jupyter labextension list looks like

JupyterLab v3.1.1
c:\users\ay29782\appdata\local\programs\python\python39\share\jupyter\labextensions
        @jupyter-widgets/jupyterlab-manager v3.0.0 enabled ok (python, jupyterlab_widgets)

Other labextensions (built into JupyterLab)
   app dir: C:\Users\ay29782\AppData\Local\Programs\Python\Python39\share\jupyter\lab
        @finos/perspective-jupyterlab v0.10.0 enabled ok
        jupyterlab_widgets v0.3.1 enabled ok

[timkpaine]

VS Code does not support labextensions, it would be best to reach out to them to ask about their plans for supporting them out of the box. More thoughts in this ticket #1251

[kimmolinna]

@timkpaine I thought VS Code Insiders does support labextensions. At least Matplotlib is working nicely as you already knew because there was a picture about it in ticket #1251.

[timkpaine]

@kimmolinna that is using a notebook extension not a lab extension.

[kimmolinna]

@timkpaine Is it also same for itkwidgets and bqplot (installed via Jupyterlab extension tab)? I have installed itkwidgets using jupyter labextension install jupyterlab-datawidgets itkwidgets. I installed matplot also from Jupyterlab extension tab and thought that it would be labextension. How can I know which one is a notebook extension and which one is a lab extension if an extension which is installed via jupyter labextension install [extension] is not the lab extension?

[timkpaine]

If you check the web pack file you can find bundling specific for lab and for notebook https://github.com/InsightSoftwareConsortium/itkwidgets/blob/a05a15afe9f57dee5be7e21e13a96bd61959ae99/js/webpack.config.js#L50

[kimmolinna]

@timkpaine Is it correct that a character in a name of module version is ~ instead of ^?

Error 2021-08-04 15:12:08: Widget load failure Widgets require us to download supporting files from a 3rd party website. (Error loading @finos/perspective-jupyterlab:~0.10.0). {
  className: 'PerspectiveModel',
  moduleName: '@finos/perspective-jupyterlab',
  moduleVersion: '~0.10.0',
  cdnsUsed: false,
  isOnline: true,
  timedout: false,
  error: {}

[timkpaine]

Yes

[kimmolinna]

@timkpaine So basically I have understood the whole think wrong. JupyterLab is an interface which is working in browser and uses notebooks as a storage. And Visual Studio Code can use the same notebooks too. My apologies.

[timkpaine]

JupyterLab is the newer interface, Jupyter Notebook is the older interface. VS Code has some degree of compatibility with the old interface.