How can I block comment code in an IPython notebook with a German keyboard?

Question

How can I block comment a selected text in an IPython Notebook with a German keyboard layout? Ctrl-/ does not work, which on a German keyboard actually is Ctrl-Shift-7.

score 13 · Answer 1 · answered Apr 11 '18 at 10:10

13

I found this great workaround for international keyboard layouts from Dataman in How do I comment out multiple lines in Jupyter Ipython notebook?

Press the Alt button and keep holding it. The cursor should change its shape into a big plus sign. The next step is, using your mouse, to point to the beginning of the first line you want to comment and while holding the Alt button pull down your mouse until the last line you want to comment. Finally, you can release the Alt button and then use the # character to comment.

answered Apr 11 '18 at 10:10

Robbotnik

557
8
8

1

That's really a great workaround and useful in many other places as well. – buechel Jan 24 '19 at 16:55
this doesn't work in Jupyter Lab... it replaces all lines with the #. – Edgar Jul 15 '19 at 09:39
1

FYI @Edgar : https://github.com/jupyter/notebook/issues/3753 and https://github.com/jupyterlab/jupyterlab-shortcutui/issues/34 – Robbotnik Aug 02 '19 at 13:01
1

Works fine for me with Jupiter-lab on Mac. Thanks – Robert Alexander Nov 30 '21 at 12:30

score 2 · Answer 2 · answered Mar 15 '22 at 10:37

2

I used it with nbextensions. Install it. See docs here

Then, in your nbconfig.

Just configure it with your personal preference. I am using german keyboard and used this implementation successfully for months.

answered Mar 15 '22 at 10:37

Createdd

865
11
15

Is there an equivalent solution for Jupyterlab? – Mark P Dec 15 '22 at 07:23
1

I didn't find a Jupyterlab solution so far. And this is one of the reasons I still use Jupyter Notebook – Createdd Dec 16 '22 at 10:07
@Createdd I searched for months for a decent solution for this problem. I bought a new keyboard without numpad and in jupyterlab ONLY "Ctrl" together with the division sign on the numpad worked for comment/uncomment (German layout). I still don't figured out how to change the bindings BUT I just found out that it also depends on the browser which is used. Mozilla is my default browser, when I started jupyterlab in chrome, suddenly "Ctrl+#" works too (the other binding on the numpad still works). Just wanted to let you know. I just use lab in chrome now, which is fine for me. – Rabinzel Jan 17 '23 at 17:25

score 0 · Answer 3 · answered Nov 10 '15 at 19:45

You can define custom keyboard shortcuts in custom.js. For Jupyter this file is located in .jupyter/custom/. On a German keyboard layout I use Ctrl + , as a shortcut to comment by adding this to custom.js:

define([
    'base/js/namespace',
    'base/js/events'
    ],
    function(IPython, events) {
        events.on("app_initialized.NotebookApp",
            function () {
                IPython.Cell.options_default.cm_config.extraKeys = {"Ctrl-," : "toggleComment"};
            }
        );
    }
);

This did not work for me (after restarting Jupyter) using Jupyter Notebook 5 under OS X 10.11 — AdamAL, Sep 07 '17 at 06:03

score 0 · Answer 4 · edited Oct 04 '22 at 00:21

0

Well after trying every combination with ctrl, voilà, ctrl-# does the job.

edited Oct 04 '22 at 00:21

Jeremy Caney

7,102
69
48
77

answered Sep 29 '22 at 14:27

Bahry Jarbou

1

score 0 · Answer 5 · answered Feb 16 '23 at 08:45

0

On a Nordic keybord (and I think this goes for German as well) simply hit Ctrl+Shift+7 (=Ctrl+/)

answered Feb 16 '23 at 08:45

Emil Lykke Jensen

389
1
3
18

score 0 · Answer 6 · answered Jul 11 '23 at 14:38

0

I found a comment by AlexanderMelde on GitHub which helped me out that is worked for me:

Strg + /

using the devide key from the numpad instead of the one with the "7" works for me with German keyboard layout.

Hope it also works for you!

answered Jul 11 '23 at 14:38

F K

1
1

How can I block comment code in an IPython notebook with a German keyboard?

6 Answers6