# tinker_cookbook.distillation.PromptOnlyEnv

## *class* [**tinker_cookbook.distillation.PromptOnlyEnv**](https://github.com/thinking-machines-lab/tinker-cookbook/blob/main/tinker_cookbook/distillation/datasets.py#L85)(*[ProblemEnv](https://tinker-docs.thinkingmachines.ai/cookbook/api-reference/rl/problemenv/index.md)*)

Environment that only provides prompts with no rewards.

### [**get_reference_answer**](https://github.com/thinking-machines-lab/tinker-cookbook/blob/main/tinker_cookbook/distillation/datasets.py#L109)()

No reference answer needed for distillation.

**Returns:** *str*

### [**step**](https://github.com/thinking-machines-lab/tinker-cookbook/blob/main/tinker_cookbook/distillation/datasets.py#L113)(*action*, *extra*)

Return zero reward always.

**Parameters:**

- [**action**](https://github.com/thinking-machines-lab/tinker-cookbook/blob/main/tinker_cookbook/distillation/datasets.py#L113) (*Action*)
- [**extra**](https://github.com/thinking-machines-lab/tinker-cookbook/blob/main/tinker_cookbook/distillation/datasets.py#L113) (*[ActionExtra](https://tinker-docs.thinkingmachines.ai/cookbook/api-reference/rl/actionextra/index.md) | None*)

**Returns:** *[StepResult](https://tinker-docs.thinkingmachines.ai/cookbook/api-reference/rl/stepresult/index.md)*