error-log.txt

optuna ❯ python optuna_create_trial.py
Optuna version: 2.3.0
[I 2020-12-20 16:15:44,324] A new study created in memory with name: no-name-e5c3d5a2-c5b0-43a6-91d0-d20150726e9d
optuna_create_trial.py:12: ExperimentalWarning: create_trial is experimental (supported from v2.0.0). The interface can change in the future.
  trial: optuna.trial.FrozenTrial = optuna.trial.create_trial(value=-80, params={"x": -5})
Traceback (most recent call last):
  File "optuna_create_trial.py", line 20, in <module>
    main()
  File "optuna_create_trial.py", line 12, in main
    trial: optuna.trial.FrozenTrial = optuna.trial.create_trial(value=-80, params={"x": -5})
  File "/home/masaki/ghq/github.com/optuna/optuna-1/optuna/_experimental.py", line 68, in new_func
    return func(*args, **kwargs)  # type: ignore
  File "/home/masaki/ghq/github.com/optuna/optuna-1/optuna/trial/_frozen.py", line 538, in create_trial
    trial._validate()
  File "/home/masaki/ghq/github.com/optuna/optuna-1/optuna/trial/_frozen.py", line 321, in _validate
    set(self.params.keys()), set(self.distributions.keys())
ValueError: Inconsistent parameters {'x'} and distributions set().

optuna_create_trial.py

import optuna


def objective(trial: optuna.trial.Trial) -> float:
    x = trial.suggest_float("x", low=-2.0, high=2.0)
    return x**3 + 3 * x**2 + 6 * x


def main():
    study = optuna.create_study()

    trial: optuna.trial.FrozenTrial = optuna.trial.create_trial(value=-80, params={"x": -5})
    study.add_trial(trial)

    study.optimize(objective, n_trials=10)


if __name__ == "__main__":
    print(f"Optuna version: {optuna.__version__}")
    main()