Linter vs Formatter

Understanding linters and formatters in Python development

This is an easy conceptual question that tests your grasp of the distinction between two categories of code-quality tools in the Python ecosystem. It surfaces regularly in interviews at firms that emphasize code hygiene and automated workflows, particularly where Ruff is in use.

The question asks you to articulate what each command does and why a development team would run both. Strong answers clarify the purpose of each tool—what problems each one solves, how they operate on source code, and where they differ in scope and output. This distinction underlies much modern development practice and is fundamental to setting up CI/CD pipelines correctly.

• Static analysis and code style checking
• Idempotency and deterministic output
• Integration into pre-commit hooks and continuous integration