请问能否更新一下教程，当前代码与原有教程已不匹配

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**Env & To Reproduce[复现与环境]**
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The issue names no tutorial file, code path, test, or version-specific mismatch. First locate the current tutorial and compare its examples with the repository’s Python code; clarify the affected steps before defining completion as a tutorial that matches the current code.

Written by the indexing model from the issue text.