Jupyter General

Help

To see parameters: SHIFT + TAB For help use ? before or after the command. For autocompletion: TAB + TAB Merge cells, select cells then: Shift + M `To see all available functions in numpy that havesinin their name:np.sin?`

Markdown

For raw text use:

```text

and close with

<```> but without the <> (that's the only one text that can't be displayed I guess!)

To add some empty vertical space one can use:

 

or add a new line use \_ where _ denotes space.

Magic commands

To autoreload edited python files (doesn’t include class signatures changes, these you have to re-import):

%load_ext autoreload
%autoreload 2

Links

Links are useful to jump between sections and files. Here are few examples:

To jump to upper section help.

To jump to some section in another file one needs to specify html link (not a jupyter file one), for example SSH.

To open a browser link in a new window use [text](link){target="_blank"}, for example this SSH in new window.

Similar for HTML link <a href="https://example.com" target="_blank">Link Text</a>.

nbimporter

To import methods from another jupyter notebook:

pip install nbimporter

For more see here.

nbconvert

nbconvert is a command line tool that can convert notebooks to other formats. To convert to pdfs, use the following command:

jupyter nbconvert --to pdf notebook.ipynb

and it will create a pdf file with the same name as the notebook (in the case above notebook.pdf).

One quirk is that it doens’t render images properly, I found it works only if the image is refered to in markdown as:
![image](images/image.png).

The following WILL NOT work however:
- ![](images/image.png) apparently image caption is necesseary to reference it.
- ![image](images/image.png){width=500px} this will fail to render properly, image will be squished wierdly

Another option is to use `notebook-as-pdf` package (this will install `nbconvert` as well, and bunch of other packages).
From [here](https://towardsdatascience.com/jupyter-notebook-to-pdf-in-a-few-lines-3c48d68a7a63):

```python
pip install -U notebook-as-pdf

wait to finish installation. Then:

pyppeteer-install
pip uninstall pypdf2
pip install "pypdf2<3.0"

Then run the following command line: jupyter-nbconvert --to PDFviaHTML <jupyter_notebook_file.ipynb> this will create PDF file with the same name jupyter_notebook_file.pdf (ignore the warning on IPython3 lexer unavailable). To rename a file: mv old_name new_name

Unfortunately only command line works, Download as option in a browser doesn’t.

Extensions

conda install -c conda-forge jupyter_contrib_nbextensions

After installation and restart, you will see nbextensions tab, most notable extensions are collapsable headings, table of context 2 (toc2), spellcheck.