isort

Isort is an open-source Python utility that automatically sorts imports within Python files. Its goal is to enforce a consistent import order and grouping, improving readability and reducing merge conflicts. Isort can organize imports into sections such as standard library, third-party packages, and local application modules, and can enforce blank lines between groups. It can also combine from-imports from the same module and order within groups, according to configurable rules or profiles.

Isort is configurable via configuration files (for example pyproject.toml, setup.cfg, .isort.cfg, or tox.ini) and supports various options such as line length, known third-party and first-party packages, and profiles (notably, a profile compatible with Black). It can be run from the command line to sort imports in a single file, multiple files, or whole directories. It can modify files in place, or run in check-only or diff mode to show what would change. It also supports integration with editors and with pre-commit hooks, enabling automatic sorting as part of development workflows.

Isort is maintained as an open-source project on platforms like GitHub and PyPI, and is widely adopted in Python projects as part of linting and formatting toolchains. By standardizing imports, it helps teams maintain consistency without manual intervention.