Track 12 · Lesson 9 of 12

Enums and structural pattern matching

Replace magic strings with enum members, and take data apart by shape with match: class patterns, mapping patterns, guards and the capture-pattern trap.

You will be able to

• Define enumerations with enum.Enum and auto() and use their name and value
• Convert outside data to enum members and reject unknown values
• Match objects with class patterns and dicts with mapping patterns, including guards
• Avoid the capture-pattern trap by matching dotted names such as Status.PAID