What this snippet does
Local variable access is optimized via array indexing in the CPython VM, making it faster than globals.
Expected output
Locals use LOAD_FAST bytecode
Why practise typing this
Typing performance & optimization 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
- Loop HoistingPerformance & Optimization · advanced
- Unbound LocalPerformance & Optimization · advanced
- Join StringsPerformance & Optimization · advanced
- List BuilderPerformance & Optimization · advanced
- Loop ConcatPerformance & Optimization · advanced
- Dynamic TypingVariables & Types · beginner