pipenv and poetry

• pip and virtualenv are standard tools
• but situation is changing
• many different tools and projects
• overview of current situation
• future is uncertain

Python Packaging Authority (pypa)

• working group that maintains many of the relevant projects in Python packaging

Installation

• pip
  • formats of packages
    • wheels
    • eggs
• easy_install
  • don't use

Development

• dependency management
  • requirements.txt
• project isolation
  • virtualenv
  • venv
• new projects
  • pipenv
  • poetry
• NOTE: as of May, 2022: neither pipenv or poetry are standard tools for Python community

Anaconda

• https://www.anaconda.com/
• have their own Python distribution
• have their own package management
• have their own distribution system
• have tool called conda
  • does everything pip and virtualenv do
  • installer
  • virtual environment tool
  • and much more
  • can install non-Python packages too
• mostly aimed at Data Science community
• NOTE: as of May, 2022: Anaconda isn't really part of standard Python ecosystem

Requirements

• requirements.txt
  • standard (pip)
  • non-deterministic dependency resolution
• Pipfile
  • pipenv
  • custom format
  • deterministic dependency resolution
• pyproject.toml
  • poetry
  • standard (PEP-518)
  • deterministic dependency resolution

pipenv

🚧 TODO 🚧

poetry

• Basic Usage

Useful and Common Commands

# Create new project
$ poetry new <project_name>

# Add package to project
$ cd ~/path/to/project
$ poetry add <package_name>

# Run script
$ poetry run python ~/path/to/project/some_script.py

# Start shell
$ poetry shell
$ . $HOME/.cache/pypoetry/virtualenvs/<project_name>-<some_hash>-py<version>/bin/activate