venv, pyvenv, and pyenv are tools used to manage Python environments, but they serve different purposes:
venv: A standard module in Python 3.3 and later for creating isolated virtual environments. It helps manage project-specific dependencies.
pyvenv: An older tool (removed in Python 3.6) used for creating virtual environments, similar to venv. It’s now considered deprecated.
pyenv: A third-party tool for managing multiple Python versions on a system, allowing you to switch between different Python installations.
In summary, venv and pyvenv handle virtual environments, while pyenv manages Python versions.