Use return a, b instead of return (a, b) #6136
Description
Motivation
In Optuna, we use return a, b rather than return (a, b), so this issue is for more consistency among the codebase.
Note
Based on PEP8, we do not replace return (a, ) with return a,.
Suggestion
Please refactor each file below:
- optuna/_gp/optim_mixed.py
- optuna/storages/_rdb/models.py
- optuna/storages/_rdb/alembic/versions/v3.0.0.c.py
- optuna/storages/_rdb/alembic/versions/v3.0.0.d.py
- optuna/visualization/_terminator_improvement.py
- tests/trial_tests/test_trial.py
Important
Please modify only one file per PR to encourage contributions from more contributors.
Additional context (optional)
No response