module ‘gym.envs.box2d‘ has no attribute ‘LunarLander‘

遇到报错

AttributeError:module ‘gym.envs.box2d’ has no attribute ‘LunarLander’

我能查到的统一的解决方案

pip install gym 
conda install swig
pip install box2d box2d-kengz

还是报错

尝试如下命令成功解决

pip install pygame