摘要：情景：Mac 上安装 sage 后，在terminal输入 sage，报错：zsh: command not found: sage 解决方式：直接从applications里 点SageMath-9-4.app 接下来一直 allow 就可以打开了 阅读全文

摘要：terminal 里创建 pythhon3.6 环境 conda create -n py3.6 python=3.6 输入 y 继续 按下面指示 使用和 停用python3.6 # To activate this environment, use # # $ conda activate py3 阅读全文

摘要：1.1.4 An agent is just something that acts (agent comes from the Latin agere, to do). Actions include: operate autonomously, perceive their environmen 阅读全文