เครื่องมือสมัยใหม่: pipenv และ uv

# Plain pip:
# python -m venv .venv
# source .venv/bin/activate
# pip install requests
# pip freeze > requirements.txt
# Modern tools do this in one command!
print('motivation')

# pip install pipenv
# pipenv install requests
# Creates: Pipfile, Pipfile.lock
print('pipenv install')

# Pipfile:
# [packages]
# requests = '*'
# [dev-packages]
# pytest = '*'
print('Pipfile demo')

# pipenv run python app.py
# pipenv shell  (opens new shell with venv)
print('pipenv run demo')

# pipenv install --dev pytest black mypy
# Listed under [dev-packages] in Pipfile
print('pipenv dev dep demo')

# Install uv:
# curl -LsSf https://astral.sh/uv/install.sh | sh
# Use like pip:
# uv pip install requests
print('uv intro')

# uv venv .venv
# source .venv/bin/activate
# uv pip install -r requirements.txt
print('uv venv demo')

# uv add requests
# uv add --dev pytest
# uv run pytest tests/
print('uv project demo')

# pyproject.toml:
# [project]
# dependencies = [
#   'requests>=2.25',
#   'pydantic>=2.0',
# ]
print('pyproject.toml demo')

# Quick guide:
# New project: uv
# Legacy project: pipenv or pip+venv
# CI/Docker: uv (fastest install)
print('tool comparison')