Pyenvs

Pyenvs are a type of software utility used to manage multiple Python versions on a single computer. They allow developers to install and switch between different Python interpreters without them interfering with each other. This is particularly useful when working on projects that require specific Python versions or when testing code compatibility across various Python releases.

The core concept behind pyenvs is isolation. Each Python version installed through a pyenv manager is kept in its own separate directory. When a user activates a specific Python version, the pyenv system modifies the system's PATH environment variable to point to the executables of that chosen version. This ensures that when the `python` command is run, it executes the interpreter from the selected environment.

Popular pyenv tools include `pyenv` itself, which is a widely used command-line utility, and `conda`, which also manages environments but extends its capabilities to include package management and handling non-Python dependencies. The choice of pyenv tool often depends on project needs and personal preference. By providing a clean separation of Python installations, pyenvs help prevent "dependency hell" and streamline the development workflow for individuals and teams working with diverse Python requirements.