Mac python setup

mac_python_setup.md

Mac python

Assumes zsh and homebrew

Pyenv (python versions)

Installing pyenv

brew install python3 pyenv
echo 'eval "$(pyenv init --path)"' >> ~/.zprofile
echo 'eval "$(pyenv init -)"' >> ~/.zshrc

Installing other needed tools

xcode-select --install
brew install openssl readline sqlite3 xz zlib

Installing (building) a python version

pyenv versions
pyenv install --list
pyenv install 3.9.9

Each project

pyenv local 3.9.9 # creates ./python-version which the pyenv python shim will find
python --version

Pipenv

Installing pipenv

brew install pipenv

# We want to tell pipenv to use the pyenv python shim.  But the only input it
# accepts is a version number, which it will use to find our pyenv python.
echo 'alias pipenv="$(which pipenv) --python $(pyenv version-name)"' >> ~/.zshrc

Each project

• init venv: pipenv install
• rm venv / reset: pipenv --rm
• add package: pipenv install <package>
• check outdated: pipenv update --outdated
• update single package: pipenv update <package>
• update all packages: pipenv update