jupyter server : not started, no kernel in vs code

Question

i am trying to use jupyter notebooks from vs code and installed jupyter notebook extension and i am using (base)conda environment for execution. while this happened

Error: Jupyter cannot be started. Error attempting to locate jupyter:
at A.startServer (c:\Users\DELL\.vscode\extensions\ms-python.python-2020.2.63990\out\client\extension.js:1:784356)
at async A.ensureServerAndNotebookImpl (c:\Users\DELL\.vscode\extensions\ms-python.python-2020.2.63990\out\client\extension.js:1:783811)
at async A.ensureServerAndNotebook (c:\Users\DELL\.vscode\extensions\ms-python.python-2020.2.63990\out\client\extension.js:1:783612)
at async A.submitCode (c:\Users\DELL\.vscode\extensions\ms-python.python-2020.2.63990\out\client\extension.js:1:780564)
at async A.reexecuteCell (c:\Users\DELL\.vscode\extensions\ms-python.python-2020.2.63990\out\client\extension.js:75:879318)

how to resolve this issue ?

score 48 · Accepted Answer · edited Mar 30 '20 at 06:54

48

I had exactly the same problem when I installed Visual Studio Code and tried to run some Python code from a jupyter notebook on my fresh Ubuntu 18.04.

How I solved it:

1) Press Command+Shift+P to open a new command pallete

2) Type >Python: Select Intepreter to start jupyter notebook server

3) Open the notebook again

And it worked fine. Hope it works for you.

edited Mar 30 '20 at 06:54

keddad

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answered Feb 26 '20 at 14:45

ABarrier

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now i have only below one `>Jupyter: Select Intepreter to start jupyter notebook server` – KeepLearning Jun 21 '21 at 03:01

Antonio Velazquez Bustamante · Answer 2 · 2020-03-14T20:55:19.147

I have several versions of Python installed. It happened the same thing to me and I have fixed it this way. Ctrl+Shift+p and select Python: Select Interpreter to start Jupyter server

Then, select the version under the Visual Studio Code

Nothing will happen and then press again Ctrl+Shift+p and select Python: Create new blank Jupyter Notebook. And it works

I have even set the Python version to 3.8 at the bottom and it worked too with the new features print(a:=4) despite the fact that the version I have chosen was 3.7.5. Nevertheless, I have to lunch VS Code from Anaconda Navigator.

score 10 · Answer 3 · edited May 20 '22 at 12:28

10

Press Command+Shift+P on mac, Ctrl+Shift+p on windows
Type Jupyter: Select Interpreter to start Jupyterserver
It would show you a dropdown of python versions installed.
I chose python 3.7.5 and it worked for me you can choose the python version installed on your machine.

edited May 20 '22 at 12:28

Largence

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answered Feb 27 '20 at 18:44

Bodunrin David

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score 6 · Answer 4 · answered Jun 10 '20 at 13:00

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I have seen all possible solutions but not work, finally I just upgrade jupyter,notebook,and jupyterlab,like pip3 install -U jupyterlab, and I can choose the kernel in VScode!

answered Jun 10 '20 at 13:00

John Jim

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yes! Make sure all of your dependencies are installed first. `pip` installing the above fixed my errors – StonedTensor Oct 04 '21 at 16:57

score 4 · Answer 5 · edited Apr 21 '20 at 10:55

4

I tried the following:

Press Command + SHIFT + P
Type Python: Select Interpreter to start Jupyterserver

Hope this answer was helpful.

edited Apr 21 '20 at 10:55

Sunny Sharma

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answered Apr 21 '20 at 07:10

Anjali Reddy

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score 4 · Answer 6 · edited Dec 13 '20 at 18:47

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Making sure that in VS Code settings.json

"python.condaPath": "C:\\Program Files\\miniconda3\\Scripts\\conda.exe"

is pointing to the correct directory. It solved it for me.

edited Dec 13 '20 at 18:47

fala

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answered May 21 '20 at 14:43

Mazel

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score 2 · Answer 7 · answered Sep 25 '20 at 09:16

2

just fix this by add

"python.terminal.activateEnvironment": false,

to settings.json

hopes this help.

answered Sep 25 '20 at 09:16

Peter

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score 2 · Answer 8 · answered Nov 06 '20 at 10:57

just had the same issue and it did not help to update the interpreter within vscode. What helped was: Check your dependencies within pip! It seems that new dependencies came up with the latest update of python, which are not installed. For me this was pygments:

jupyter-console 6.2.0 requires pygments, which is not installed.

Linux solution step-by-step:

xyz@xyz-pc-ubuntu:~$ pip3 check
qtconsole 4.7.6 requires pygments, which is not installed.
nbconvert 5.6.1 requires pygments, which is not installed.
jupyter-console 6.2.0 requires pygments, which is not installed.
ipython 7.18.1 requires pygments, which is not installed.

xyz@xyz-pc-ubuntu:~$ pip3 install pygments
Successfully installed pygments-2.7.2

Afterwards, jupyter found the updated python interpreter automatically.

score 1 · Answer 9 · answered Feb 28 '20 at 09:32

1

I faced the same problem and this solved my problem https://www.reddit.com/r/vscode/comments/eq2bfv/vs_code_jupyter_server_no_kernel_python_not/ hope this helps

answered Feb 28 '20 at 09:32

kriti

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score 1 · Answer 10 · answered Aug 14 '20 at 18:27

In my case, I had the server working in 3.7.6, but i wanted to use >3.8.0 versions too. After multiple attempts, which failed, I decided to:

Uninstall 3.8.5, and delete the folder in the installation directory.
Uninstall VSCode too.
Restart the PC, and re-install Python and VSCode. As a result, the Jupyter server initiated based on the latest version of Python automatically.

I hope this helps too! Cheers!

score 1 · Answer 11 · answered Nov 06 '20 at 01:22

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I installed anaconda and selected python kernal came with that as my interpreter (ctrl + shift + p) that solved my issue.

answered Nov 06 '20 at 01:22

alengcm

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this is better off as a comment rather than an answer – Uni Nov 06 '20 at 05:01

jupyter server : not started, no kernel in vs code

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