Files
lerobot/.pre-commit-config.yaml
T
Pepijn 2e8345a5cc docs: add API documentation infrastructure
LeRobot's documentation build passes `--not_python_module`, which tells
doc-builder there is no importable Python package and disables `[[autodoc]]`
entirely. The result is that all 90+ pages are hand-written guides and there is
no generated API reference at all.

This is the machinery to change that. It deliberately contains no docstring
changes of its own — every docstring edit lives in the follow-up PR, so this
one can be reviewed as tooling and configuration alone.

**The standard.** `docs/source/writing_docstrings.mdx` is the contract: Google
section headers with Hugging Face type formatting, the machine-checked argument
line, `**Attributes**:`, doc-builder cross-references, fenced doctest examples.
It also records three behaviours that are not discoverable from the source and
were verified against a local build: `[[autodoc]]` silently skips members with
no docstring; doc-builder does not inherit docstrings from base classes, so a
registered config shim whose body is `pass` renders every field with no
description; and module-level aliases resolve to the canonical class.

**Autodoc turned on**, with two changes that are not obvious:

- `--version main` on the main-docs job. Without `--not_python_module`,
  doc-builder resolves the version from `lerobot.__version__` and only maps it
  to the default branch when it contains "dev". transformers relies on that;
  our main carries 0.6.2. Verified by building both ways — dropping the flag
  alone would publish the main docs to /lerobot/v0.6.2/ instead of
  /lerobot/main/ and disable notebook building.
- `pre_command` on both jobs. doc-builder ships a mock-deps registry entry for
  lerobot, so the reusable workflow takes its light-install path, which cannot
  import the package. The heavy dependencies cannot be mocked either: draccus
  runs `register_subclass` at import time and `processor/converters.py` calls
  `functools.singledispatch.register(torch.Tensor)`, which needs a real class.
  `[dataset]` is the only extra required.

Workflow triggers gain `src/**`, since the reference is now generated from
docstrings. `docs/source/api/` is excluded from the prettier hook, which reads
`[[autodoc]]` member lists as lazy paragraph continuations and joins a ten-entry
list onto one line.

Nine API reference pages, scaffolded with each module's base class.

**Doctests.** `LeRobotDocTestParser` is mandatory rather than optional here:
ruff's `docstring-code-format = true` drops the blank line before a closing
fence, after which stdlib's `_EXAMPLE_RE` reads the fence as expected output and
every example with output fails. It is written against the installed pytest
rather than copied from transformers, whose version predates pytest 9's
`import_path` signature and its own fix for the `@property` line-number bug.
`preprocess_string` also diverges: the upstream fenced-block split puts a
single-line example's code in a chunk with no `>>>` in it, so neither the CUDA
skip nor the `+IGNORE_RESULT` injection fires for it.

**Checkers.** `utils/check_docstrings.py` is the ~300-line core of the
2203-line transformers original; the `@auto_docstring` system, modular
propagation, GitPython and `checkers.py` are not ported.
`utils/check_config_docstrings.py` checks that every registered robot config
documents its port and calibration semantics.

**Gates**, all set to values that pass today: ruff `D` with per-file-ignores
per unconverted module, `interrogate` at `fail-under = 52` against a measured
52.1%, and Makefile targets wired into the quality workflow. The doctest
allowlist ships empty and the `doctest` target handles that, because the files
carrying runnable examples arrive with the docstring PR.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-06 20:57:26 +02:00

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# Copyright 2024 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
default_language_version:
python: python3.12
exclude: "tests/artifacts/.*\\.safetensors$"
repos:
##### Meta #####
- repo: meta
hooks:
- id: check-useless-excludes
- id: check-hooks-apply
##### General Code Quality & Formatting #####
- repo: https://github.com/pre-commit/pre-commit-hooks
rev: v6.0.0
hooks:
- id: check-added-large-files
args: ['--maxkb=1024']
- id: debug-statements
- id: check-merge-conflict
- id: check-case-conflict
- id: check-yaml
- id: check-toml
- id: end-of-file-fixer
- id: trailing-whitespace
- repo: https://github.com/astral-sh/ruff-pre-commit
rev: v0.14.1
hooks:
- id: ruff-format
- id: ruff
args: [--fix, --exit-non-zero-on-fix]
- repo: https://github.com/adhtruong/mirrors-typos
rev: v1.38.1
hooks:
- id: typos
args: [--force-exclude]
- repo: https://github.com/asottile/pyupgrade
rev: v3.21.0
hooks:
- id: pyupgrade
args: [--py312-plus]
##### Markdown Quality #####
- repo: https://github.com/rbubley/mirrors-prettier
rev: v3.6.2
hooks:
- id: prettier
name: Format Markdown with Prettier
types_or: [markdown, mdx]
args: [--prose-wrap=preserve]
# Jinja2 model-card templates use a .md extension but contain {% ... %} /
# {{ ... }} tags that prettier's Markdown formatter mangles (e.g. table loops).
#
# docs/source/api/ holds the generated API reference. Its `[[autodoc]]` blocks restrict output
# to an indented `- member` list, which prettier reads as a lazy paragraph continuation and
# joins onto one line — silently turning a member list into part of the directive.
exclude: ^(src/lerobot/templates/.*\.md|docs/source/api/.*\.mdx)$
##### Security #####
- repo: https://github.com/gitleaks/gitleaks
rev: v8.28.0
hooks:
- id: gitleaks
- repo: https://github.com/woodruffw/zizmor-pre-commit
rev: v1.15.2
hooks:
- id: zizmor
- repo: https://github.com/PyCQA/bandit
rev: 1.8.6
hooks:
- id: bandit
args: ["-c", "pyproject.toml"]
additional_dependencies: ["bandit[toml]"]
# TODO(Steven): Uncomment when ready to use
##### Static Analysis & Typing #####
- repo: https://github.com/pre-commit/mirrors-mypy
rev: v1.19.1
hooks:
- id: mypy
args: [--config-file=pyproject.toml]
exclude: ^(examples|benchmarks|tests)/
##### Docstring Checks #####
# - repo: https://github.com/akaihola/darglint2
# rev: v1.8.2
# hooks:
# - id: darglint2
# args: ["--docstring-style", "google", "-v", "2"]
# exclude: ^tests/.*$
# interrogate runs in CI (quality.yml, doc-checks job) rather than here. Its 1.7.0 release still imports
# the deprecated `py` package, which resolves against whatever `py` happens to be importable in
# pre-commit's isolated env — on a machine with miniconda on the path that is a stray `py.py` and the
# hook dies before it reads any config. The gate is the same either way; the CI step is just reliable.
# - repo: https://github.com/econchick/interrogate
# rev: 1.7.0
# hooks:
# - id: interrogate
# args: ["--config=pyproject.toml"]
# pass_filenames: false