python-install.md

Python

Python Installation

(1) Pyenv method

brew install pyenv

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

source ~/.zshrc

pyenv install --list
pyenv install 3.12.2
pyenv global 3.12.2
pyenv rehash

• Ref
  • https://github.com/pyenv/pyenv

(2) Homebrew method

• brew install python
• Upgrade dependencies after install python3 -m pip install --upgrade pip setuptools wheel

Usage

• python3 --version
• python --version

Project creation - dependency Management

Virtual Environment (virtualenv) method

• Prerequisite

  • xcode-select --install
    • xcode-select -p (optional)

• Setup project

  • python -m venv MyProject - Install
  • source MyProject/bin/activate - Activate environment
  • cd MyProject
  • pip install <package_name> - Install packages
    • flake8 - Linting package
    • black - Formatting package
  • deactivate - Deactivate environment
  • pip freeze > requirements.txt - Create requirements.txt
  • pip install -r requirements.txt - Install packages in requirements.txt file

• My Sample project - https://github.com/shaunthomas999/Python_Playground/

• Reference template - https://github.com/ltsaprounis/python-project-template/

  • See setup.py file
  • Package inside it are installed using command pip install -e . (development dependencies)

• References

  • https://packaging.python.org/en/latest/tutorials/installing-packages/#ensure-you-can-run-pip-from-the-command-line
  • https://learnpython.com/blog/how-to-use-virtualenv-python/

Reference

• Official - https://docs.python-guide.org/starting/install3/osx/
• http://sourabhbajaj.com/mac-setup/Python/