Virtualenv is a tool that creates an isolated Python environment. It allows you to create a separate environment with its own dependencies, packages, and libraries, which is helpful when you’re working on multiple Python projects with different requirements or when you want to avoid conflicts between packages.
By using virtualenv, you can install specific versions of packages for each project, and you won’t need to worry about affecting other projects’ dependencies or causing version conflicts. Additionally, you can create and activate different virtual environments on the same machine, depending on your needs.
Virtualenv creates a folder that contains a Python interpreter and a copy of the standard Python library. Any packages that you install while in the virtual environment are stored within that folder, making it easy to switch between different environments without affecting other projects.