Managing Python Environments with pyenv

Installing pyenv

git clone https://github.com/pyenv/pyenv.git ~/.pyenv

# Install with brew
brew install pyenv

# Auto installer
curl https://pyenv.run | bash

# Adding pyenv to the shell

echo 'export PATH="$HOME/.pyenv/bin:$PATH"' >> ~/.bashrc
echo 'eval "$(pyenv init --path)"' >> ~/.bashrc
echo 'eval "$(pyenv virtualenv-init -)"' >> ~/.bashrc
source ~/.bashrc

List and install a specific version

# show installed versions:
pyenv versions

# list the available versions of python3
pyenv install --list | grep " 3\.[6789]"

# Install a specific python version
pyenv install 3.9

# Switch to the version globally

pyenv global 3.9

# Switch to the version locally

pyenv local 3.9

# Switch to the version per shell

pyenv shell 3.9

# Unset version

pyenv local --unset
pyenv shell --unset

Creating a virtual environment

pyenv virtualenv 3.9 project_environment

# Activating the virtual environment
pyenv activate project_environment

# Deactivating the virtual environment
pyenv deactivate