Which version of Python should I use? Which version is installed?.We no longer install packages at the system level and, at our next major update of the Linux distribution on cycles, ionic, courselab, and armlab, we will not carry forward such packages. So for each project you start, you can also create a new virtual environment to ensure that all of the installed dependencies don't affect the other projects on your computer.Īs you create more and more projects, and as you deploy those projects, you'll soon realize how important it is to have strict separations between projects.NOTE (): If your project relies on Python packages that CS Staff has previously installed at the system level, please migrate your project to a virtual environment immediately. This can become a problem if two different projects require different versions of the same package. Python is unlike other more enterprise-friendly languages (like Java) in that 3rd-party libraries are loaded and used throughout the whole system, instead of on a project-by-project basis. Since you can't have both versions installed site-wide, so you need a Python environment that will keep the dependencies separated. Let's say you have boto version 2.7.0 installed in the site-packages, but the project you're just starting needs the newer 2.38.0 version. This is useful for when you want to have a clean-slate for your projects. from the system-wide environment do not appear in the virtual environment, so it's almost like you have a clean Python install. What this really means is that any settings, 3rd-party packages, etc. The virtualenv tool creates an isolated Python environment (in the form of a directory) that is completely separate from the system-wide Python environment.
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