Code formatting rewrites Python source into a consistent style, reducing differences between contributors. Unlike Flake8 or Pylint, a formatter changes layout such as indentation, line breaks, and quoting. section 12.1.1
A practical formatting workflow uses:
- Black or YAPF to apply a project-wide formatting style; their styles differ slightly. section 12.1.1
- Black by installing it with pip and running `python -m black dags/`. section 12.1.1
- Flake8 or Pylint alongside formatting when broader code-quality feedback is required. section 12.1.1
Black reformats a function
Black turns a function with split arguments, mixed quote styles, and an explicit line continuation into a compact signature, consistent double quotes, and a direct return expression. section 12.1.1
Listing 12.7 Installing and running Black
python -m pip install black python -m black dags/
Use the command listing to install Black and format the DAG directory. section 12.1.1
