title: What is the difference between venv, pyvenv, pyenv, virtualenv, virtualenvwrapper, pipenv, etc?
body: <p>Python 3.3 includes in its standard library the new package <code>venv</code>. What does it do, and how does it differ from all the other packages that match the regex <code>(py)?(v|virtual|pip)?env</code>?</p>