v0.26.3 Release Notes

Note: ale-py (atari) has not updated to Gymnasium yet. Therefore pip install gymnasium[atari] will fail, this will be fixed in v0.27. In the meantime, use pip install shimmy[atari] for the fix.

Bug Fixes

• Added Gym-Gymnasium compatibility converter to allow users to use Gym environments in Gymnasium by @RedTachyon in https://github.com/Farama-Foundation/Gymnasium/pull/61

• Modify metadata in the HumanRendering and RenderCollection wrappers to have the correct metadata by @RedTachyon in https://github.com/Farama-Foundation/Gymnasium/pull/35

• Simplified EpisodeStatisticsRecorder wrapper by @DavidSlayback in https://github.com/Farama-Foundation/Gymnasium/pull/31

• Fix integer overflow in MultiDiscrete.flatten() by @olipinski in https://github.com/Farama-Foundation/Gymnasium/pull/55

• Re-add the ability to specify the XML file for Mujoco environments by @Kallinteris-Andreas in https://github.com/Farama-Foundation/Gymnasium/pull/70

Documentation change

• Add a tutorial for training an agent in Blackjack by @till2 in https://github.com/Farama-Foundation/Gymnasium/pull/64

• A very long list of documentation updates by @mgoulao, @vairodp, @WillDudley, @pseudo-rnd-thoughts and @jjshoots

Full Changelog: https://github.com/Farama-Foundation/Gymnasium/compare/v0.26.2…v0.26.3

Thank you for the new contributors

• @vairodp made their first contribution in https://github.com/Farama-Foundation/Gymnasium/pull/41

• @DavidSlayback made their first contribution in https://github.com/Farama-Foundation/Gymnasium/pull/31

• @WillDudley made their first contribution in https://github.com/Farama-Foundation/Gymnasium/pull/51

• @olipinski made their first contribution in https://github.com/Farama-Foundation/Gymnasium/pull/55

• @jjshoots made their first contribution in https://github.com/Farama-Foundation/Gymnasium/pull/58

• @vmoens made their first contribution in https://github.com/Farama-Foundation/Gymnasium/pull/60

• @till2 made their first contribution in https://github.com/Farama-Foundation/Gymnasium/pull/64

• @Kallinteris-Andreas made their first contribution in https://github.com/Farama-Foundation/Gymnasium/pull/70

Github Release: https://github.com/Farama-Foundation/Gymnasium/releases/tag/v0.26.3