A notebook is composed of 'cells'. This is a markdown cell, it is for words, the next is for code. The code cells can be run by pressing the play button at the top or shift+Enter. You can freely change things as you will have to in the next cell.
You have several varieties of notebooks:
- (original=vanilla) Jupyter notebook, runs on your machine
- Jupyter lab, newer version of the above
- Colab, run on Google cloud
- Jupyter hub, the multiuser version of Jupyter
Not sure how to use a Python object? Make a cell a type help(🤖) where 🤖 is the object.
(No, you cannot use emoji as variables in Python).
In this notebook, the imported module dtc will have dtc.show_source(🤖) will show the source code in a colourful way
(it calls inspect.getsource a handy function).
The output of the last command will be passed to IPython.display.display, which renders them based on the magic method
_ipython_display_ or _repr_html_ etc. and in extremis __repr__ then __str__. Hence why some cells end in None herein.