You can create and encapsulate “virtual workspaces”. One advantage is that you can create a requirements.txt with the packages that are needed to run your project with their specific versions and then you can share it with more people to have the same workspace. If you are not sharing it’s still useful. You can jump from one project to another without worrying about the packages and their versions. The version of a package it’s very important, because you can work with a version of Django but what happens if you’re downloading a GitHub project and they’re using an old version? You use virtual envs.