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展开查看旧版代码（仅展示，不执行）","sha256":"b5f2d755e2ad018e90a28a20600c873333e0691cce1a7f018f374a7d482cbaf3","chapter":{"id":"course","title":"旧版热身（历史参考）"},"unit":{"id":"notebook-blocks/40cb21de62644787b549a881181299e0","title":"旧版热身（历史参考）"},"page":{"id":"reading-section-1","title":"展开查看旧版代码（仅展示，不执行）","number":2},"sectionTitle":"展开查看旧版代码（仅展示，不执行）","currentQuestion":"展开查看旧版代码（仅展示，不执行）","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":null,"nextBlock":"b-4037db381524e0480f4062b6","prerequisites":[],"relatedBlocks":[]},{"id":"b-4037db381524e0480f4062b6","type":"pre","scope":"document","url":"https://codingai-lec03.pages.dev/course/notebook-blocks/40cb21de62644787b549a881181299e0.html#b-4037db381524e0480f4062b6","content":"```\ncontract={'input':'one observable object','target':'one checkable output','split':'by environment','baseline':'simple deterministic rule','metric':'task metric + failure slices','counterevidence':'condition that would change the claim'}\nfor k,v in contract.items(): print(f'{k}: {v}')\nassert set(contract)=={'input','target','split','baseline','metric','counterevidence'}\n\n```","sha256":"aa7d2c30a5e0feff90b899d9479c2df4067492958eec2e3f5d02f3a9fe14cbbc","chapter":{"id":"course","title":"旧版热身（历史参考）"},"unit":{"id":"notebook-blocks/40cb21de62644787b549a881181299e0","title":"旧版热身（历史参考）"},"page":{"id":"reading-section-1","title":"展开查看旧版代码（仅展示，不执行）","number":2},"sectionTitle":"展开查看旧版代码（仅展示，不执行）","currentQuestion":"展开查看旧版代码（仅展示，不执行）","sourceSlides":[],"knowledgeBlock":null,"formulas":[],"previousBlock":"b-88e5aa07b72d3f73d922a621","nextBlock":null,"prerequisites":[{"id":"b-88e5aa07b72d3f73d922a621","url":"#b-88e5aa07b72d3f73d922a621","role":"section-title"}],"relatedBlocks":[]}]}