Solution 1: sudo apt purge python3-ipykernel sudo apt install python3-ipykernel
Solution 2: OR, purge python-notebook package and install it again, it will automatically install ipykernel package while resolving its dependency. sudo apt purge python-notebook sudo apt install python-notebook Should fix you're issue. By the way, installing python-notebook from official debian repo(http://deb.debian.org/debian) works for me without a singal error. ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Wednesday, November 7, 2018 7:59 PM, D. R. Evans <doc.ev...@gmail.com> wrote: > D. R. Evans wrote on 11/06/2018 07:56 AM: > > > 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? > > This is now bug 913110: > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=913110 > > The bug report includes a simple fix. > > Doc > > ------------------------------------------------------------------------------------------------------------------------------- > > Web: http://enginehousebooks.com/drevans
