# aligator: pendulum

Official aligator python script example for pendulum. Inspect the pinned source and upstream setup before use.

ID: `aligator-examples-pendulum-py`

Record version: `source-9b2e2f5bc89a143301bbd30590ed6867ecda2180d630eb09661cf9fef45d6d7e`

Hub commit: `f97266a5cdd2c600cd376397a54892f08290df20`

## Access

Fetch the pinned repository, verify this source checksum, and use upstream installation and invocation. This record does not install or execute code.

Optional inert file retrieval: `python /PATH_TO_SKILL/scripts/rsh.py fetch-source aligator-examples-pendulum-py --expected-source-revision 05f19ca05484a294f4aadd480ba2088a67b1431c --expected-source-sha256 9b2e2f5bc89a143301bbd30590ed6867ecda2180d630eb09661cf9fef45d6d7e --project ./experiment --json`. This verifies one file, preserves provenance and never installs or runs it. See [source-file retrieval](https://hub.superfastrobotics.com/source-files.md).

Hub preparation adapter: **false**. Runtime verification: **not_run**.

Upstream setup: https://github.com/Simple-Robotics/aligator/blob/05f19ca05484a294f4aadd480ba2088a67b1431c/README.md

## Source and license

- Repository: https://github.com/Simple-Robotics/aligator
- Pinned source: https://github.com/Simple-Robotics/aligator/blob/05f19ca05484a294f4aadd480ba2088a67b1431c/examples/pendulum.py
- Revision: `05f19ca05484a294f4aadd480ba2088a67b1431c`
- Path: `examples/pendulum.py`
- Source SHA256: `9b2e2f5bc89a143301bbd30590ed6867ecda2180d630eb09661cf9fef45d6d7e`
- Source bytes: 8438
- Original authors: See pinned upstream source and license notices.
- License: [BSD-2-Clause](https://github.com/Simple-Robotics/aligator/blob/05f19ca05484a294f4aadd480ba2088a67b1431c/LICENSE)
- License scope: Repository-root code terms only; file headers, third-party code, models, weights, assets and datasets require separate review.

License SHA256: `dc35159ccdd9c342d3048d758d48b3013a297ed8eff4a0ebaadd8ccec0b7b99b`

## Requirements

```json
{
  "python": "Inspect the pinned upstream package metadata for the supported Python version.",
  "packages": [],
  "display": "Upstream simulator, robot model, build, display and device requirements; inspect the selected source.",
  "execution_domain": "simulation-or-hardware",
  "source_imports": [
    "aligator",
    "aligator.utils.plotting",
    "coal",
    "contextlib",
    "matplotlib.pyplot",
    "numpy",
    "pathlib",
    "pinocchio",
    "pinocchio.visualize",
    "utils"
  ]
}
```

## Invocation

```json
{
  "entrypoint": "python examples/pendulum.py",
  "notes": "Source reference only. Install the pinned upstream project and its stated dependencies explicitly. Robot bridges may actuate hardware; no hardware execution is established. Asset, model, SDK and data terms remain separate."
}
```

## Compatibility

```json
[]
```

Missing environment fields remain unknown. Source discovery labels do not establish robot compatibility.

## Evidence

Level: **source_reviewed**. Runtime verification: **not_run**.

Fetched and SHA-256 checked this immutable source; statically parsed Python or located native main; verified pinned license bytes and checked explicit per-file license identifiers. No upstream code executed.

Source review and contributor reports do not establish task completion. Preserve upstream attribution and licenses.