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I'm having trouble installing the ipywidgets jupyterlab extension. I tried following this direction, and I got the message Building jupyterlab assets (build:prod:minimize) as follows:

$  conda install -c conda-forge nodejs

Collecting package metadata (current_repodata.json): done

Solving environment: done

# All requested packages already installed.
$ jupyter labextension install @jupyter-widgets/jupyterlab-manager
Building jupyterlab assets (build:prod:minimize)
$

After this process, I got an error message ModuleNotFoundError: No module named 'ipywidgets' as bellow.

screen shot of a jupyter lab's window

I tried to fix this issue with two methods.

  1. I refered to this page as reference and I typed jupyter lab build --minimize=False. However, I got the same error message as before:
$ jupyter labextension install @jupyter-widgets/jupyterlab-manager
Building jupyterlab assets (build:prod:minimize)
  1. I referd to this page as reference. However, when I try $which nodejs, I didn't get any responses on terminal display.

How can I fix this problem and install ipywidgets?

Informationon my machine:

$ which node
/Users/myname/opt/miniconda3/envs/ptfl/bin/node
$ node -v 
v14.5.0
$ which nodejs
$ ls /usr/local/bin/node 
/usr/local/bin/node
$ which npm
/Users/myname/opt/miniconda3/envs/ptfl/bin/npm
$ npm -v 
6.14.5

About OS: MacOS Catalina version 10.15.4

About miniconda : miniconda3

==============================

Update

7/25:

  1. I updated the OS from v10.15.14 to v10.15.5.

  2. After updated the OS, I retried to install a ipywidgets as folllows.

=

$ conda install -c conda-forge nodejs
 Collecting package metadata (current_repodata.json): done
 Solving environment: done

## Package Plan ##

  environment location: /Users/myname/opt/miniconda3/envs/ptfl

  added / updated specs:
    - nodejs


The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    nodejs-14.6.0              |       hdde0ff8_0        12.7 MB  conda-forge
    ------------------------------------------------------------
                                           Total:        12.7 MB

The following packages will be UPDATED:

  nodejs                                  14.5.0-h2c41780_0 --> 14.6.0-hdde0ff8_0


Proceed ([y]/n)? y


Downloading and Extracting Packages
nodejs-14.6.0        | 12.7 MB   | ##################################### | 100% 
Preparing transaction: done
Verifying transaction: done
Executing transaction: done
$ jupyter labextension install @jupyter-widgets/jupyterlab-manager
Building jupyterlab assets (build:prod:minimize)
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  • "Building jupyterlab assets (build:prod:minimize)" is not an error message, but rather a progress indicator. IF you saw no other error, things should be working as intended. Are there any other things that cause you to believe things are not working? – Vidar Jul 24 '20 at 14:08
  • @Vidar Thank you for the information. I understood "Building jupyterlab assets (build:prod:minimize)" is not an error message and edited this post. However, I still got an error message on jupyterlab "ModuleNotFoundError: No module named 'ipywidgets'". Do you have any how to fix this issue. – Mina Jul 25 '20 at 12:24
  • It sounds like you need to install the python module in your kernel (which has nothing to do with the lab extension). – Vidar Aug 05 '20 at 20:14

0 Answers0