Python Annotations Quiz - Real Python

"In this quiz, you'll test your understanding of lazy annotations introduced in Python 3.14."

"By working through this quiz, you'll revisit how they improve performance, address forward reference issues, and support both static type checking and runtime processing."

"The quiz contains 9 questions and there is no time limit."

Lazy annotations in Python 3.14 delay evaluation of type annotations until they are needed, reducing import-time computation and improving runtime performance. They avoid errors from forward references by keeping annotation expressions unevaluated until resolution can occur in the appropriate runtime context. They remain compatible with static type checkers by preserving annotation information for analysis while enabling optional runtime evaluation for frameworks or reflection. They reduce startup overhead and help prevent import cycles in large codebases. They enable tooling and runtime features to access type metadata without incurring immediate evaluation costs.

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