Making Data Classes Work for You
summary
Starts from a concrete problem (an int constrained to 1–10) and shows code that enforces validity by building a small immutable type OneToTen using dataclasses with frozen=True and validation in __post_init__. Shows composition into Person made from FullName BirthDate EmailAddress, uses enums for months, checks ranges (days 1–31, years 1900–2022), and demonstrates the resulting types are usable and prevent invalid states.
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chapters (8)
- 0:00Introduction
- 1:07Checking for errors
- 4:20Encapsulation
- 6:48Data Classes
- 9:08Replace Function
- 10:29Frozen Objects
- 16:08Composing
- 18:57enums
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