You're setting up a new development environment and need multiple versions of Python. Which tool would be most suitable for managing multiple Python versions?

PyEnv is a tool specifically designed for managing multiple versions of Python. It allows you to easily switch between different Python versions within your development environment. Virtual environments are used for isolating dependencies but not for managing different Python versions. Anaconda is a distribution of Python but doesn't focus solely on managing versions. PVM is not a commonly used tool.