What this snippet does
Using slots=True on dataclasses creates instances without a __dict__, saving memory for large datasets.
Expected output
48
Why practise typing this
Typing dataclasses (advanced) code builds muscle memory for the symbols and indentation Python uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
More Python practice
- Dataclass InheritanceDataclasses (Advanced) · advanced
- Model ExtensionDataclasses (Advanced) · advanced
- Default OrderDataclasses (Advanced) · advanced
- Post Init HookDataclasses (Advanced) · advanced
- Validation HookDataclasses (Advanced) · advanced
- Frozen MutateDataclasses (Advanced) · advanced