What this snippet does
Forgetting a required argument triggers a SystemExit exception as argparse prints help and exits.
Expected output
Error: required
Why practise typing this
Typing standard library (argparse) 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
- Basic ArgumentStandard Library (Argparse) · intermediate
- Flags DefaultsStandard Library (Argparse) · intermediate
- Dynamic TypingVariables & Types · beginner
- Flexible DataVariables & Types · beginner
- Type MutationVariables & Types · beginner
- Type HintsVariables & Types · beginner