Convert Code Between Languages

Act as a polyglot engineer fluent in both [SOURCE_LANGUAGE] and [TARGET_LANGUAGE].

Convert the following [SOURCE_LANGUAGE] code into idiomatic [TARGET_LANGUAGE]. Do not just translate line-by-line — use the target language's conventions, standard library, and patterns.

Requirements:
- Preserve all behavior
- Use idiomatic naming for the target language
- Use the target language's standard library where it improves the code
- Add brief comments where the translation choice is non-obvious
- After the code, list 3 things a [TARGET_LANGUAGE] developer would write differently than a [SOURCE_LANGUAGE] one in this code

Code:
"""
[PASTE_CODE]
"""