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Re: jupyter notebook immediately crashes with dead kernel




D. R. Evans wrote on 11/05/2018 06:14 PM:
> vipul kumar wrote on 11/05/2018 05:35 PM:
>> Run Jupyter-notebook from terminal. Send log report which you'll get on terminal while running jupyter-notebook.
>>
>

> 
> [HN:~] jupyter-notebook
> [I 18:11:04.210 NotebookApp] Serving notebooks from local directory: /home/n7dr
> [I 18:11:04.211 NotebookApp] 0 active kernels
> [I 18:11:04.211 NotebookApp] The Jupyter Notebook is running at:
> http://localhost:8888/
> [I 18:11:04.211 NotebookApp] Use Control-C to stop this server and shut down
> all kernels (twice to skip confirmation).
> 
> ----

I see additional messages when I actually try to create the notebook (sorry; I
wasn't looking for those yesterday):

----

HN:~] jupyter-notebook
[I 07:37:19.123 NotebookApp] Serving notebooks from local directory: /home/n7dr
[I 07:37:19.124 NotebookApp] 0 active kernels
[I 07:37:19.124 NotebookApp] The Jupyter Notebook is running at:
http://localhost:8888/
[I 07:37:19.124 NotebookApp] Use Control-C to stop this server and shut down
all kernels (twice to skip confirmation).
[I 07:37:29.629 NotebookApp] Creating new notebook in
[I 07:37:32.575 NotebookApp] Kernel started: 00f6d461-87f1-410e-9963-5f5db91602f3
/usr/bin/python: No module named ipykernel_launcher
[I 07:37:35.561 NotebookApp] KernelRestarter: restarting kernel (1/5)
/usr/bin/python: No module named ipykernel_launcher
[I 07:37:38.571 NotebookApp] KernelRestarter: restarting kernel (2/5)
/usr/bin/python: No module named ipykernel_launcher
[I 07:37:41.582 NotebookApp] KernelRestarter: restarting kernel (3/5)
/usr/bin/python: No module named ipykernel_launcher
[W 07:37:42.678 NotebookApp] Timeout waiting for kernel_info reply from
00f6d461-87f1-410e-9963-5f5db91602f3
[I 07:37:44.592 NotebookApp] KernelRestarter: restarting kernel (4/5)
WARNING:root:kernel 00f6d461-87f1-410e-9963-5f5db91602f3 restarted
/usr/bin/python: No module named ipykernel_launcher
[W 07:37:47.604 NotebookApp] KernelRestarter: restart failed
[W 07:37:47.605 NotebookApp] Kernel 00f6d461-87f1-410e-9963-5f5db91602f3 died,
removing from map.
ERROR:root:kernel 00f6d461-87f1-410e-9963-5f5db91602f3 restarted failed!
[W 07:37:47.654 NotebookApp] Kernel deleted before session
[W 07:37:47.656 NotebookApp] 410 DELETE
/api/sessions/56ef952c-800c-448f-baf0-857081b87abc (::1) 3.46ms
referer=http://localhost:8888/notebooks/Untitled4.ipynb?kernel_name=python3

----

The strange thing here is:
  /usr/bin/python: No module named ipykernel_launcher

Why is it running /usr/bin/python, which is a link to python2??

----

HN:~] ls -al /usr/bin/python
lrwxrwxrwx 1 root root 9 Jan 24  2017 /usr/bin/python -> python2.7

----

I would have thought that, since the package installed the ipython3 kernel for
jupyter, and when I try to create a notebook, it's python3 that is in the
"New" drop-down menu on the jupyter page, then it should be executing
/usr/bin/python3, not /usr/bin/python.

Is this perhaps an error in the packaging?

  Doc

-- 
Web:  http://enginehousebooks.com/drevans

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