This is a multi-part workshop covering the basics of regular expressions. The first parts of the workshop are relevant across languages. There are also R and Python sessions covering the details of using regular expressions in those languages.
There is nothing to download for the initial sessions. Follow the links below. Exercises are also run in your web browser. These tutorials are not language-specific -- they cover general concepts of regular expressions that can be used across programming languages.
Language-specific materials
- R: Regex with stringr - one of the additional sessions
- Python regex and string methods
For additional recommended resources for learning regular expressions, see https://sites.northwestern.edu/researchcomputing/2021/03/04/online-learning-resources-regular-expressions/.
You may find this cheatsheet to be a useful reference.