Move type-only imports to TYPE_CHECKING in _constrained_optimization.py#6381
Merged
not522 merged 1 commit intooptuna:masterfrom Dec 11, 2025
Merged
Move type-only imports to TYPE_CHECKING in _constrained_optimization.py#6381not522 merged 1 commit intooptuna:masterfrom
TYPE_CHECKING in _constrained_optimization.py#6381not522 merged 1 commit intooptuna:masterfrom
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TYPE_CHECKING in _constrained_optimization.py
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Motivation
This PR is part of the type-checking cleanup effort. In
optuna/study/_constrained_optimization.py, theFrozenTrialimport is used only for type annotations and is not needed at runtime. Moving it under aTYPE_CHECKINGblock reduces unnecessary runtime imports and aligns the file with Optuna's type-hinting conventions.Description of the changes
FrozenTrialinto aTYPE_CHECKINGblock.Related to #6029