# {py:mod}`evorl.evaluators.ec_evaluator`

```{py:module} evorl.evaluators.ec_evaluator
```

```{autodoc2-docstring} evorl.evaluators.ec_evaluator
:parser: autodoc2_docstrings_parser
:allowtitles:
```

## Module Contents

### Classes

````{list-table}
:class: autosummary longtable
:align: left

* - {py:obj}`EpisodeObsCollector <evorl.evaluators.ec_evaluator.EpisodeObsCollector>`
  - ```{autodoc2-docstring} evorl.evaluators.ec_evaluator.EpisodeObsCollector
    :parser: autodoc2_docstrings_parser
    :summary:
    ```
````

### Functions

````{list-table}
:class: autosummary longtable
:align: left

* - {py:obj}`env_step <evorl.evaluators.ec_evaluator.env_step>`
  - ```{autodoc2-docstring} evorl.evaluators.ec_evaluator.env_step
    :parser: autodoc2_docstrings_parser
    :summary:
    ```
* - {py:obj}`rollout <evorl.evaluators.ec_evaluator.rollout>`
  - ```{autodoc2-docstring} evorl.evaluators.ec_evaluator.rollout
    :parser: autodoc2_docstrings_parser
    :summary:
    ```
````

### API

`````{py:class} EpisodeObsCollector
:canonical: evorl.evaluators.ec_evaluator.EpisodeObsCollector

Bases: {py:obj}`evorl.evaluators.episode_collector.EpisodeCollector`

```{autodoc2-docstring} evorl.evaluators.ec_evaluator.EpisodeObsCollector
:parser: autodoc2_docstrings_parser
```

````{py:attribute} rollout_fn
:canonical: evorl.evaluators.ec_evaluator.EpisodeObsCollector.rollout_fn
:type: evorl.evaluators.episode_collector.RolloutFn
:value: >
   'pytree_field(...)'

```{autodoc2-docstring} evorl.evaluators.ec_evaluator.EpisodeObsCollector.rollout_fn
:parser: autodoc2_docstrings_parser
```

````

`````

````{py:function} env_step(env_fn: evorl.envs.EnvStepFn, action_fn: evorl.agent.AgentActionFn, env_state: evorl.envs.EnvState, agent_state: evorl.agent.AgentState, key: chex.PRNGKey) -> tuple[evorl.sample_batch.SampleBatch, evorl.envs.EnvState]
:canonical: evorl.evaluators.ec_evaluator.env_step

```{autodoc2-docstring} evorl.evaluators.ec_evaluator.env_step
:parser: autodoc2_docstrings_parser
```
````

````{py:function} rollout(env_fn: evorl.envs.EnvStepFn, action_fn: evorl.agent.AgentActionFn, env_state: evorl.envs.EnvState, agent_state: evorl.agent.AgentState, key: chex.PRNGKey, rollout_length: int, env_extra_fields: collections.abc.Sequence[str] = ()) -> tuple[evorl.sample_batch.SampleBatch, evorl.envs.EnvState]
:canonical: evorl.evaluators.ec_evaluator.rollout

```{autodoc2-docstring} evorl.evaluators.ec_evaluator.rollout
:parser: autodoc2_docstrings_parser
```
````