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

解决了AttributeError: module 'gym.envs.box2d' has no attribute 'LunarLander'和Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLEOFError问题