AGENTS.md

MetricFlow Project Rules

This project uses hatch for dependency management and testing:

• Dependencies: Use hatch commands, not pip install directly.
• Linting: Run make lint to detect and fix lint errors.
• Testing:
  • Use hatch run dev-env:pytest <path> to run tests in a specific file.
  • Use make test to run all tests.
• Snapshots: When adding new tests that use snapshots, add the --overwrite-snapshots flag to the above pytest command to generate snapshots.

If git_ignored/AGENTS.md exists, append the rules in that file.

Python Code Standards

• Always add type annotations to all Python functions (parameters and return types)
• Use from __future__ import annotations at the top of Python files