Jupyter notebook

Drosera_capensis · 01-20-2020, 08:14 AM

Hello everyone,

I have a little trouble with Jupyter Notebook, which is not opening in my browser.
I have spent the last two hours on tutorials to solve the problem, and just don't understand what the cause of it.

I am working on Ubuntu 19.04 disco dingo.

I have installed jupyter core 4.6.1, and jupyter-notebook : 5.7.8.

Code:

user@host:~$ jupyter notebook
[I 14:08:44.748 NotebookApp] The port 8888 is already in use, trying another port.
[I 14:08:44.753 NotebookApp] Serving notebooks from local directory: /home/usr
[I 14:08:44.754 NotebookApp] The Jupyter Notebook is running at:
[I 14:08:44.754 NotebookApp] http://localhost:8889/?token=e689e92b21a8e1a1af49753fd70df83150ea132e31e27fa2
[I 14:08:44.754 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 14:08:44.756 NotebookApp] 
    
    To access the notebook, open this file in a browser:
        file:///home/usr/.local/share/jupyter/runtime/nbserver-6350-open.html
    Or copy and paste one of these URLs:
        http://localhost:8889/?token=e689e92b21a8e1a1af49753fd70df83150ea132e31e27fa2

Would anyone know why the Jupyter notebook is not opening directly in a browser?

Thanks for your help.

beachboy2 · 01-20-2020, 08:46 AM

Drosera_capensis,

Code:

sudo apt install python3-notebook jupyter jupyter-core python-ipykernel

To start jupyter:

Code:

jupyter notebook

Drosera_capensis · 01-20-2020, 09:59 AM

Thanks beachboy2, I have run the first command successfully.

However, the second gives the same result:

Code:

usr@host:~$ jupyter notebook
[I 15:54:13.944 NotebookApp] Serving notebooks from local directory: /home/usr
[I 15:54:13.944 NotebookApp] The Jupyter Notebook is running at:
[I 15:54:13.944 NotebookApp] http://localhost:8888/?token=93cb395e62594c623c17f8e397d2e0d1b3b17432cba6a215
[I 15:54:13.944 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 15:54:13.947 NotebookApp] 
    
    To access the notebook, open this file in a browser:
        file:///home/usr/.local/share/jupyter/runtime/nbserver-10170-open.html
    Or copy and paste one of these URLs:
        http://localhost:8888/?token=93cb395e62594c623c17f8e397d2e0d1b3b17432cba6a215

And the browser page (firefox) gives the following message:

Quote:

Access to the file was denied

The file at /home/usr/.local/share/jupyter/runtime/nbserver-10170-open.html is not readable.

It may have been removed, moved, or file permissions may be preventing access.

ondoho · 01-20-2020, 03:30 PM

May be obvious, but...
Does the file exist and what are its permissions/ownership?

Drosera_capensis · 01-21-2020, 10:48 AM

Thanks for remembering me this ondoho!

To be on the safe side, I have given full permission on the file.

When opened directly with:

Code:

jupyter notebook file

[I 16:39:36.637 NotebookApp] The Jupyter Notebook is running at:
[I 16:39:36.637 NotebookApp] http://localhost:8888/?token=e08837a263b840e9744f0d0db3d3cdbc3d957c48e07990d0
[I 16:39:36.637 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 16:39:36.641 NotebookApp] 
    
    To access the notebook, open this file in a browser:
        file:///home/usr/.local/share/jupyter/runtime/nbserver-19293-open.html
    Or copy and paste one of these URLs:
        http://localhost:8888/?token=e08837a263b840e9744f0d0db3d3cdbc3d957c48e07990d0

The webpage gives:

Code:

Firefox can't find the file at /tmp/tmpKNd42Y.html.

The first link gives access to this page:

Code:

The file at /home/usr/.local/share/jupyter/runtime/nbserver-19293-open.html is not readable.

The second link gives access to the Jupyter browser. When trying to open the document, it gives:

Code:

500 : Internal Server Error

I know the file is not corrupted, as it was working previously.

Would anyone have an idea of what is happening?

Drosera_capensis · 01-21-2020, 10:54 AM

PS:

I am working with full anaconda.

I have tried a snap installation and a conda installation. In both cases, Jupyter notebook fail.

Would anyone know a version that might work with a fresh installation?

Drosera_capensis · 01-21-2020, 11:28 AM

PPS:

I have noticed that when using the jupyter notebook command after a fresh anaconda installation, I got this message:

Quote:

The file at /home/usr/.local/share/jupyter/runtime/nbserver-28511-open.html is not readable.

I have checked, and indeed this file is not existing.

Would anyone know what is this file?

beachboy2 · 01-22-2020, 03:04 AM

Drosera_capensis,

https://github.com/jupyter/notebook/issues/4500

Drosera_capensis · 01-22-2020, 05:00 AM

Thanks for the answer beachboy2.

This command line has solved my browser problem. Therefore, it is opening the Jupyter browser interface when executing the command:

Code:

Jupyter notebook

However, trying to open the file.ipynb, it still gives

Code:

500 : Internal Server Error

on the web page.

I have tried to upgrade nconvert or to re-install it to solve the problem, as mentioned in different forums, but it doesn't work.
Does anyone has another solution for this?

FlinchX · 01-24-2020, 06:10 PM

I vaguely remember something related to the way jupyter wrongly binds to IPs.

Try adding --ip=0.0.0.0 or --host=0.0.0.0 to your jupyter launching command.

Sorry for being obscure, all I remember I found this in a github issue by googling and added it to my personal knowledge base, but didn't record the source link.

Drosera_capensis · 02-07-2020, 05:08 AM

Thank you very much FlinchX. I have tried the commands, but unfortunately, it does not work.

I really wonder what could be the cause of the problem. Jupyter and anaconda has been re-installed twice and it is still failing.

I don't really understand how the server can be an issue as I am on a local machine. If anyone has the beginning of an explanation, I am interested!