AttributeError: 'Namespace' object has no attribute 'n_agents'

[xiaowangzi777]

运行MAPPO_MPE示例代码时，simple_spread_v3.yaml文件中没有规定agent的数量

[wenzhangliu]

Hi, setting the number of agents in MPE environment through .yaml files is not supported currently.

If you want to set different number of agents or customize your own scenarios in MPE, I suggest you following their official steps at https://pettingzoo.farama.org/tutorials/custom_environment/, and wrapper your customized environments by following the XuanCe's document at https://xuance.readthedocs.io/en/latest/documents/usage/new_marl_envs.html.