A stub file is a file containing a skeleton of the public interface of that Python module, including classes, variables, functions – and most importantly, their types.
By using these stubs, IDEs will provide better code completion, and static type checkers will provide better reports.
If you are using the PyCharm plugin for Odoo or the VSCode extension for Odoo, then you don't need to setup Odoo Stubs manually as they already have built-in Odoo Stubs. If not, you can follow these instructions for manually setup.
Example, for Odoo 16:
git clone -b 16.0 https://github.com/odoo-ide/odoo-stubs.git odoo-stubs16
First make sure you have attached the Odoo source code
to your project.
Then open Settings > Project > Project Structure,
select the project containing the Odoo source code and click Add Content Root to add the odoo-stubs folder.
Add the odoo-stubs folder to the stubPath or extraPaths settings as described in the
import resolution documentation.
