* [Doctest]fix No.21, test=docs_preview

* Revert "[Doctest]fix No.21, test=docs_preview"

This reverts commit 76bcdb280e254d682be6fc6f85588f1940bb1ade.

* [Doctest]fix No.21, test=docs_preview

* fix bugs,test=docs_preview

* [Doctest]fix No.22-24,26,27, test=docs_preview

* update fix

* with pre-commit, test=docs_preview

* fix seed, test=docs_preview

* fix error, test=docs_preview

* fix seed, test=docs_preview

* fix seed, test=docs_preview