pip
The standard package installer for Python, fetching from PyPI.
- Resolves and installs dependencies.
- pip install -r requirements.txt; pip freeze.
- Alternatives: uv, pipx, poetry use the same format.
When to use: Adding/upgrading any Python package to a project.
Example: pip install "pandas>=2.2,<3" installs latest 2.x. pip install -e . for editable installs.