Python

• 1: venv
• 2: Pytest
• 3: Pyenv

1 - venv

Create a dir (and any subdirs) and place a pyvenv.cfg as well as a bin dir.

python -m venv PATH

For example:

python -m venv .venv

To activate the virtual environment:

source PATH/bin/activate

To deactivate the virtual environment:

deactivate

2 - Pytest

To install:

pip install pytest

To execute:

pytest

Pytest will run the tests in any file prefixed with test_.

3 - Pyenv

Install pyenv:

brew update
brew install pyenv

Configure pyenv:

echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.zshrc
echo 'command -v pyenv >/dev/null || export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.zshrc
echo 'eval "$(pyenv init -)"' >> ~/.zshrc

Install build deps of MacOS: brew install openssl readline sqlite3 xz zlib tcl-tk

List available versions: pyenv install -l

Install a version: pyenv install version

Set a global version to use: pyenv global version

There are three ways to set the python version to be used:

• Select just for current shell session: pyenv shell version
• Automatically select whenever you are in the current directory (or its subdirectories): pyenv local version
• Select globally for your user account: pyenv global version