# Module: tf_agents.drivers

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| [![](https://www.tensorflow.org/images/GitHub-Mark-32px.png) View source on GitHub](https://github.com/tensorflow/agents/blob/v0.19.0/tf_agents/drivers/__init__.py) |

Drivers for running a policy in an environment.

## Modules

[`driver`](https://www.tensorflow.org/agents/api_docs/python/tf_agents/drivers/driver) module: Base class for drivers that takes steps in an environment.

[`dynamic_episode_driver`](https://www.tensorflow.org/agents/api_docs/python/tf_agents/drivers/dynamic_episode_driver) module: A Driver that takes N episodes in the environment using a tf.while_loop.

[`dynamic_step_driver`](https://www.tensorflow.org/agents/api_docs/python/tf_agents/drivers/dynamic_step_driver) module: A Driver that takes N steps in the environment using a tf.while_loop.

[`py_driver`](https://www.tensorflow.org/agents/api_docs/python/tf_agents/drivers/py_driver) module: A Driver that steps a python environment using a python policy.