numpy-docstrings

author	dotagents
name	numpy-docstrings
description	Write and review NumPy-style (numpydoc) docstrings for Python public APIs. Covers section order, semantics (what belongs in docstrings vs types vs tests), anti-patterns (comment soup, stub docs, wrong style), Parameters, Returns, Yields, Raises, See Also, Notes, References, Examples, and class/module docs. Use when authoring or auditing docstrings. Triggers on docstring, numpydoc, Parameters, Returns, Examples, Sphinx, TODO, comment.

NumPy-style docstrings (numpydoc)

Quick start

1. Public APIs only per project Python spec and Python rule: document modules, classes, functions, and methods users import; private helpers stay minimal unless behavior is non-obvious.
2. Follow section order from numpydoc; each heading is underlined with hyphens the same length as the title.
3. Line length: aim for ~75 characters in docstring prose for terminal readability.
4. Markup: subset of reST; parameter names in single backticks in running text.
5. Load the chunk you are editing from the table below—each reference file targets one part of the standard.
6. Semantics: choose docstring vs annotation vs test vs prose deliberately; avoid comment narration and stub docstrings—see reference-semantics-and-anti-patterns.md.

Stack synergy

Resource	Role
general-python	pytest, “NumPy style on public APIs”
python-reviewer	Checks docstring quality alongside typing and tests
python-types	Types in signatures complement docstring types

Section reference index

Docstring chunk	File
Global rules, section order, line length, reST	reference-overview-order.md
Short summary, extended summary, deprecation	reference-summary-deprecation.md
Parameters, Other Parameters, *args / **kwargs	reference-parameters.md
Returns, Yields, Receives	reference-returns-yields-receives.md
Raises, Warns, Warnings	reference-raises-warns-warnings.md
See Also, Notes, References	reference-see-also-notes-references.md
Examples (doctest style)	reference-examples.md
Classes, Attributes, Methods, modules	reference-classes-modules.md
Why each mechanism; bad comments/docstrings; fixes	reference-semantics-and-anti-patterns.md

Canonical specification

• numpydoc style guide
• Example docstring
• PEP 257 (baseline docstring conventions)

Optional tooling

• uv add numpydoc when Sphinx builds use the numpydoc extension; do not hand-edit pins in pyproject.toml.