Here are a few good websites/books that I am fond of that use DAGs, and have code examples in R, Python, and Stata on github or packaged up.
Data Analysis for Business, Economics, and Policy and its github.
The Effect, withewith examples in packages:
install.packages('causaldata')
in Rssc install causaldata
in Statapip install causaldata
in Python.
Using Python for Introductory Econometrics by Florian Heiss and Daniel Brunner.
This is not exactly the cutting-edge stuff, but the foundation you need to get started.
I am an economist at a tech company who uses and teaches these methods.