Test cases live in tests/cases/ organized into fundamentals/valid/, fundamentals/invalid/, modules/, and programs/. Each .rs file declares its expected output in comments at the top:
Владислав Уткин
，这一点在PDF资料中也有详细论述
age: int | None，推荐阅读电影获取更多信息
self._background_tasks.discard(t)。旺商聊官方下载对此有专业解读