pyenv

Pyenv is a powerful command line tool used for managing multiple Python versions on a single machine. It allows developers to easily switch between different versions of Python without affecting the system's default Python installation. With pyenv, you can install and manage different Python interpreters, including CPython, PyPy, and even custom builds.

One of the main advantages of pyenv is that it enables you to create virtual Python environments using different versions. This is particularly useful when working on projects that require specific Python versions or when testing compatibility across different releases. Pyenv also allows for the installation of Python packages on a per-project basis, ensuring each project's dependencies are isolated.

Pyenv makes it easy to switch Python versions globally or locally, making it ideal for managing Python installations across different projects. Furthermore, by using pyenv, you can set the Python version for a particular directory or even define different versions for specific shell sessions.

The pyenv command line tool provides various functionalities, including installing Python versions, managing virtual environments, listing available Python versions, uninstalling interpreters, and more. Additionally, it integrates with other tools like pip and setuptools, allowing you to easily manage packages for each version.

Pyenv is highly configurable, allowing you to customize its behavior by modifying its environment variables and shell hooks. It is compatible with major Unix-like operating systems such as macOS, Linux, and BSD and supports both Bash and Zsh shells.

Overall, pyenv simplifies and streamlines Python version management, making it a valuable tool for developers working on projects that require different Python versions or need to switch between interpreters with ease.