> For the complete documentation index, see [llms.txt](https://docs.layerlens.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.layerlens.ai/6.-build-wire-your-code/installation.md).

# Python SDK — install

## Requirements

* Python 3.8+
* pip

## Install

```bash
pip install layerlens --extra-index-url https://sdk.layerlens.ai/package
```

{% hint style="info" %}
**Index URL availability.** The LayerLens package index at `https://sdk.layerlens.ai/package` is the authoritative source. If you receive a network error (DNS, 404, TLS), check the [release notes](https://github.com/LayerLens/gitbook-full/blob/main/13-reference/sdk-python/release-notes-sdk.md) for any maintenance notice and try the [PyPI mirror](https://pypi.org) as a fallback (`pip install layerlens --extra-index-url https://sdk.layerlens.ai/package` without `--extra-index-url`) — the public-PyPI version may lag the LayerLens index by 1-2 days.
{% endhint %}

## Verify

```python
import layerlens
print(layerlens.__version__)
```

## Dependencies

* `httpx`
* `pydantic`
* `requests` (file uploads)

## Upgrade

```bash
pip install --upgrade layerlens --extra-index-url https://sdk.layerlens.ai/package
```

## See also

* [SDK quickstart](/2.-get-started/sdk.md)
* [Authentication](https://github.com/LayerLens/gitbook-full/blob/main/13-reference/sdk-python/authentication.md)


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