gymnasium
https://github.com/farama-foundation/gymnasium
Python
An API standard for single-agent reinforcement learning environments, with popular reference environments and related utilities (formerly Gym)
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- Issues
- [RFC] `MJX` environment prototype (WIP)
- [Proposal] [`FuncEnv`] Add `params` argument to `__init__`
- [Proposal] Uniform API for Getting the Current State (and maybe setting it as well?) for Environments
- [Question] ValueError: ndarray is not C-contiguous
- [Proposal] Creating BlackJack Environment Tutorial
- [Bug Report] Rendering two environments at the same time
- [Proposal] Allowing environments with different Box action/observation space limits in a vector environment
- [Proposal] Remove `mujoco-py` based environments at May 2025
- Rework rendering API to allow for simultaneous "human" and "rgb_array" mode rendering
- [New feature] Add reset options support for functional jax envs
- Docs
- Python not yet supported