regex

Python regex offers powerful text manipulation features without requiring complex matching. The “substitute_variables” function in Coverage.py demonstrates how to expand environment variables in configuration using a straightforward regex. Key regex features include verbose syntax for clarity, named groups for retrieval, and the ability to use functions for matches in replacements—enhancing readability and maintainability in code. Regex can be powerful and manageable when applied correctly.

https://nedbatchelder.com/blog/202504/regex_affordances.html