In the video tutorials, I use the Atom editor to write code . You can download it from the official website link.

Go to File -> Settings -> Packages. Here we can download any package we need. In the search bar type the following names:

1. Script - It is main package that allows to work with the code.

2. autocomplete-python - autocompletes the code you type, you can speed up the work several times. It has standart python libreries, if we want to autocomplete the Revit API code, we need to install additional python stubs. Go to ironpython-stubs githube page and download it. There you can find installation instructions for various Editors, including Atom. Shortly, you need to go to autocomplete-python settings and in 'Extra Paths For Packages' line type the path to the stub.min folder:

You can delete not neccessary folders. I'm using only Autodesk imports.

Now, when you type the code, autocomplete will show you all available functions:

 You need to import all methodes that you use. Autocomplete will not work if you just import * from Revit.DB.

Next packages are optional but it makes writing code a bit comfortable:

3. minimap

4. atom-beautify

5.  python-autopep8