pyenv-virtualenv is a pyenv plugin that provides features to manage virtualenvs and conda environments for Python on UNIX-like systems.

If you don't have pyenv in your system, follow below post;

How to install Python with pyenv version manager

How to install Python packages with pipenv, venv or virtualenv package manager

Installing pyenv-virtualenv

$ brew update
$ brew install pyenv-virtualenv

Setting PATH

Run one of the following commands in terms of your shell's .rc file.

$ echo 'eval "$(pyenv virtualenv-init -)"' >> ~/.bashrc

$ echo 'eval "$(pyenv virtualenv-init -)"' >> ~/.zshrc

Creating virtual environment

$ mkdir python_demo
$ cd python_demo

$ pyenv install 3.11.4

$ pyenv virtualenv 3.11.4 python_demo-3.11.4

$ pyenv virtualenvs

$ pyenv prefix python_demo-3.11.4
/Users/kenanhancer/.pyenv/versions/python_demo-3.11.4

$ ls -Llat $(pyenv prefix python_demo-3.11.4)

drwxr-xr-x  14 kenanhancer  staff  448 19 Jun 17:36 bin
-rw-r--r--   1 kenanhancer  staff  107 19 Jun 17:36 pyvenv.cfg
drwxr-xr-x   3 kenanhancer  staff   96 19 Jun 17:36 lib
drwxr-xr-x   2 kenanhancer  staff   64 19 Jun 17:36 include

$ tree -a -L 4 $(pyenv prefix python_demo-3.11.4)

├── bin
│   ├── Activate.ps1
│   ├── activate
│   ├── activate.csh
│   ├── activate.fish
│   ├── pip
│   ├── pip3
│   ├── pip3.11
│   ├── pydoc
│   ├── python -> python3.11
│   ├── python3 -> python3.11
│   └── python3.11 -> /Users/kenanhancer/.pyenv/versions/3.11.4/bin/python3.11
├── include
│   └── python3.11
├── lib
│   └── python3.11
│       └── site-packages
│           ├── _distutils_hack
│           ├── distutils-precedence.pth
│           ├── pip
│           ├── pip-23.1.2.dist-info
│           ├── pkg_resources
│           ├── setuptools
│           └── setuptools-65.5.0.dist-info
└── pyvenv.cfg

Creating virtual environment from current version

$ mkdir python_demo
$ cd python_demo

$ pyenv local 3.9.17

$ pyenv virtualenv python_demo-3.9.17

$ pyenv prefix python_demo-3.9.17
/Users/kenanhancer/.pyenv/versions/python_demo-3.9.17

├── bin
│   ├── Activate.ps1
│   ├── activate
│   ├── activate.csh
│   ├── activate.fish
│   ├── pip
│   ├── pip3
│   ├── pip3.9
│   ├── pydoc
│   ├── python -> python3.9
│   ├── python3 -> python3.9
│   └── python3.9 -> /Users/kenanhancer/.pyenv/versions/3.9.17/bin/python3.9
├── include
├── lib
│   └── python3.9
│       └── site-packages
│           ├── _distutils_hack
│           ├── distutils-precedence.pth
│           ├── pip
│           ├── pip-23.0.1.dist-info
│           ├── pkg_resources
│           ├── setuptools
│           └── setuptools-58.1.0.dist-info
└── pyvenv.cfg

Activate and deactivate virtual environment

$ pyenv activate python_demo-3.9.17

$ pyenv which python
/Users/kenanhancer/.pyenv/versions/test31-3.9.17/bin/python

$ pyenv prefix
/Users/kenanhancer/.pyenv/versions/test31-3.9.17

$ pyenv which pip
/Users/kenanhancer/.pyenv/versions/test31-3.9.17/bin/pip

$ pyenv deactivate

Automatically Activate and deactivate virtual environment

setting local environment to created virtual environment, makes our job easier. When we go in to python_demo directory, pyenv will activate virtual environment automatically, and going out of this directory will deactivate virtual environment.

$ cd python_demo
$ pyenv local python_demo-3.9.17

(test31-3.9.17) kenanhancer@kenans-MacBook-Pro test31 % 

Deleting virtual environment

$ pyenv uninstall python_demo-3.9.17