Move FrozenTrial import under TYPE_CHECKING for _study_summary.py file#6386
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not522 merged 1 commit intooptuna:masterfrom Dec 15, 2025
Merged
Move FrozenTrial import under TYPE_CHECKING for _study_summary.py file#6386not522 merged 1 commit intooptuna:masterfrom
FrozenTrial import under TYPE_CHECKING for _study_summary.py file#6386not522 merged 1 commit intooptuna:masterfrom
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_study_summary.py fileFrozenTrial import under TYPE_CHECKING for _study_summary.py file
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Description
This PR addresses part of issue #6029: "Use TYPE_CHECKING if necessary" by moving the import of
FrozenTrialinstudy_summary.pyunder aTYPE_CHECKINGblock.FrozenTrialis only used for type annotations in this module and is not required at runtime. Moving this import underTYPE_CHECKINGreduces unnecessary runtime imports and aligns with Optuna's ongoing cleanup of typing-only imports.Changes
FrozenTrialimport so that it is only loaded during type checking, since it is not needed at runtime.