zapersea

I found that if your gym is not the latest 0.14 version, there should be env._entry_point instead of env.entry_point . The reason is here--https://github.com/openai/gym/commit/dc91f434f83f3ad612ff353cbf2c1afc4788896b#diff-3dff15d44236dd4f0f823a6ddb7e8c9b . You could modify two 'env.entry_point'...