Frozen Dataclasses
Learn the concept of frozen dataclasses and their implementation in Python.
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Overview
The general case for dataclasses is to create mutable objects. The state of an object can be changed by assigning new values to the attributes. This isn’t always a desirable feature, and we can make a dataclass immutable.
We can describe the UML diagram of the design by adding a stereotype of «Frozen». This notation can help to remind us of the implementation choice of making the object immutable. We must also respect an important rule of frozen dataclasses: an extension via inheritance must also be frozen.
The definition of the frozen Sample objects ...