What this snippet does
Frozen dataclasses are hashable, making them safe to use as arguments to cached functions.
Expected output
3
Why practise typing this
Typing functions (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
- Cache HashFunctions (Advanced) · advanced
- Mutable HashFunctions (Advanced) · advanced
- Dynamic TypingVariables & Types · beginner
- Flexible DataVariables & Types · beginner
- Type MutationVariables & Types · beginner
- Type HintsVariables & Types · beginner