How to close IPython Notebook properly?

问题:

How to close IPython Notebook properly?

Currently, I just close the browser tabs and then use Ctrl+C in the terminal.
Unfortunately, neither exit() nor ticking Kill kernel upon exit does help (they do kill the kernel they but don't exit the iPython).

回答1:

There isn't currently a better way to do it than Ctrl+C in the terminal.

We're thinking about how to have an explicit shutdown, but there's some tension between the notebook as a single-user application, where the user is free to stop it, and as a multi-user server, where only an admin should be able to stop it. We haven't quite worked out how to handle the differences yet.

(For future readers, this is the situation with 0.12 released and 0.13 in development.)

Update December 2017

The IPython Notebook has become the Jupyter Notebook. A recent version has added a jupyter notebook stop shell command which will shut down a server running on that system. You can pass the port number at the command line if it's not the default port 8888.

You can also use nbmanager, a desktop application which can show running servers and shut them down.

Finally, we are working on adding:

• A config option to automatically shut down the server if you don't use it for a specified time.
• A button in the user interface to shut the server down. (We know it's a bit crazy that it has taken this long. Changing UI is controversial.)

回答2:

If you run jupyter in the background like me:

jupyter notebook &> /dev/null &

Then to exit jupyter completely, instead of Ctl-C, make an alias command:

echo 'alias quitjupyter="kill $(pgrep jupyter)"' >> ~/.bashrc

Restart your terminal. Kill all jupyter instances:

quitjupyter

Note: use double quotes inside of single quotes as shown above. The other way around will evaluate the expression before writing it to your .bashrc (you want to write the command itself not 'kill 1430' or whatever process number may be associated with a current jupyter instance). Of course you can use any alias you wish. I actually use 'qjup':

echo 'alias qjup="kill $(pgrep jupyter)"' >> ~/.bashrc

Restart your terminal. Kill all jupyter instances:

qjup

回答3:

I think accepted answer outdated and is not valid anymore.

You can terminate jupyter notebook from web interface on file menü item.

When you move Mouse cursor on "close and halt", you will see following explanation.

And when you click "close and halt", you will see following message on terminal screen.

回答4:

Try killing the pythonw process from the Task Manager (if Windows) if nothing else works.

回答5:

Linux (Ubuntu 14.04)

As mentioned, try to kill ipython notebook processes properly by first going to the "running" tab in your ipynb/jupyter browser session, and then check open terminals on your console and shut down with ctrl-c. The latter should be avoided if possible.

If you run an ipython notebook list and continue to see running ipython servers at different ports, make note of which ports the existing notebooks are being served to. Then shut down your TCP ports:

fuser -k 'port#'/tcp 

I'm not sure if there are other risks involved with doing this. If so, let me know.

回答6:

Environment

---

My OS is Ubuntu 16.04 and jupyter is 4.3.0.

Method

---

First, i logged out jupyter at its homepage on browser(the logout button is at top-right)

Second, type in Ctrl + C in your terminal and it shows:

[I 15:59:48.407 NotebookApp]interrupted Serving notebooks from local directory: /home/Username 0 active kernels

The Jupyter Notebook is running at: http://localhost:8888/?token=a572c743dfb73eee28538f9a181bf4d9ad412b19fbb96c82

Shutdown this notebook server (y/[n])?

Last step, type in y within 5 sec, and if it shows:

[C 15:59:50.407 NotebookApp] Shutdown confirmed
[I 15:59:50.408 NotebookApp] Shutting down kernels

Congrats! You close your jupyter successfully.

回答7:

Actually, I believe there's a cleaner way than killing the process(es) using kill or task manager.

In the Jupyter Notebook Dashboard (the browser interface you see when you first launch 'jupyter notebook'), browse to the location of notebook files you have closed in the browser, but whose kernels may still be running.

iPython Notebook files appear with a book icon, shown in green if it has a running kernel, or gray if the kernel is not running.

Just select the tick box next to the running file, then click on the Shutdown button that appears above it.

This will properly shut down the kernel associated with that specific notebook.

回答8:

First step is to save all open notebooks. And then think about shutting down your running Jupyter Notebook. You can use this simple command:

$ jupyter notebook stop 
Shutting down server on port 8888 ...

Which also takes the port number as argument and you can shut down the jupyter notebook gracefully.

For eg:

jupyter notebook stop 8889 
Shutting down server on port 8889 ...

Additionally to know your current juypter instance running, check below command:

shell> juypter notebook list 
Currently running servers:
http://localhost:8888/?token=ef12021898c435f865ec706d7c9af8607a7ba58bbee98632 :: /Users/username/jupyter-notebooks [/code]

回答9:

In the browser session you can also go to Kernel and then click Restart and Clear Output.

回答10:

I am copy pasting from the Jupyter/IPython Notebook Quick Start Guide Documentation, released on Feb 13, 2018. http://jupyter-notebook-beginner-guide.readthedocs.io/en/latest/execute.html

1.3.3 Close a notebook: kernel shut down When a notebook is opened, its “computational engine” (called the kernel) is automatically started. Closing the notebook browser tab, will not shut down the kernel, instead the kernel will keep running until is explicitly shut down. To shut down a kernel, go to the associated notebook and click on menu File -> Close and Halt. Alternatively, the Notebook Dashboard has a tab named Running that shows all the running notebooks (i.e. kernels) and allows shutting them down (by clicking on a Shutdown button).

Summary: First close and halt the notebooks running.

1.3.2 Shut down the Jupyter Notebook App Closing the browser (or the tab) will not close the Jupyter Notebook App. To completely shut it down you need to close the associated terminal. In more detail, the Jupyter Notebook App is a server that appears in your browser at a default address (http://localhost:8888). Closing the browser will not shut down the server. You can reopen the previous address and the Jupyter Notebook App will be redisplayed. You can run many copies of the Jupyter Notebook App and they will show up at a similar address (only the number after “:”, which is the port, will increment for each new copy). Since with a single Jupyter Notebook App you can already open many notebooks, we do not recommend running multiple copies of Jupyter Notebook App.

Summary: Second, quit the terminal from which you fired Jupyter.

回答11:

These commands worked for me:

jupyter notebook list # shows the running notebooks and their port-numbers
                      # (for instance: 8080)
lsof -n -i4TCP:[port-number] # shows PID.
kill -9 [PID] # kill the process.

This answer was adapted from here.