MPE (moved to MPE2)

Warning

The MPE environments are no longer part of PettingZoo. They now live in their own Farama project, MPE2, where they continue to be maintained.

Importing pettingzoo.mpe raises an ImportError pointing here.

Migration Guide

Install the new package:

pip install mpe2

Then update your imports. The environment names and versions are unchanged, so in most cases swapping the import is the only edit required:

# Before (PettingZoo <= 1.24)
from pettingzoo.mpe import simple_spread_v3

# After
from mpe2 import simple_spread_v3

env = simple_spread_v3.env(render_mode="human")

MPE2 still implements the PettingZoo AEC and Parallel APIs, so the rest of your code, along with any PettingZoo wrappers and utilities, continues to work.

Environments

The environments that used to be documented on this site are now documented at mpe2.farama.org:

• Simple

• Simple Adversary

• Simple Crypto

• Simple Push

• Simple Reference

• Simple Speaker Listener

• Simple Spread

• Simple Tag

• Simple World Comm

MPE2 also adds environments that were never part of PettingZoo, including Simple Formation, Simple Line, and Collect Treasure.

Links

• Documentation: https://mpe2.farama.org/

• GitHub: https://github.com/Farama-Foundation/MPE2

• PyPI: https://pypi.org/project/mpe2/