PEP 636 – Structural Pattern Matching: Tutorial
PEP 622 proposed syntax for pattern matching, which received detailed discussion both from the community and the Steering Council. A frequent concern was about how easy it would be to explain (and learn) this feature. This PEP addresses that concern providing the kind of document which developers could use to learn about pattern matching in Python.
Source: PEP 636 – Structural Pattern Matching: Tutorial, an article by Daniel F Moisset.