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Setup Python Version Management: pyenv

pyenv lets you easily switch between multiple versions of Python. It’s simple, unobtrusive, and follows the UNIX tradition of single-purpose tools that do one thing well.

Installation

In this topic, we will install pyenv on macOS.

Install pyenv

[!NOTE] Before installing pyenv, make sure you have installed Homebrew. If you haven’t installed Homebrew yet, you can follow the instructions here.

Install pyenv using Homebrew:

brew update
brew install pyenv

Add pyenv to zsh profile

Add the following lines to your ~/.zshrc file:

echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.zshrc
echo '[[ -d $PYENV_ROOT/bin ]] && export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.zshrc
echo 'eval "$(pyenv init - zsh)"' >> ~/.zshrc

Usage

List available Python versions

pyenv install --list

Install Python

pyenv install 3.12.8

Set Python version globally

pyenv global 3.12.8

Set Python version locally

pyenv local 3.12.8

Uninstall Python

pyenv uninstall 3.12.8

List installed Python versions

pyenv versions

Update pyenv

brew upgrade pyenv

PIP

Install PIP

To install PIP, you do that via the get-pip.py script. The script automatically downloads and installs the current pip package for Python.

[!IMPORTANT] Install pip via get-pip.py only with Python3 or later. This method doesn’t work for earlier versions.

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python get-pip.py

To verify the installation, run the following command:

pip --version

References