目录前言：一、创建虚拟环境二、在虚拟环境中管理三方包1.在终端中打开项目2.使用pip list可以查看已安装的包3. 使用pip uninstall&nbjssp;numpy卸载numpy包总结前言：
I have a collection of objects which have several properties in each of them.I often need to get a list of distinct values for many properties in this collection. If I implement IEqualityComparer on t
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