---
title: "Datasets"
canonical: https://www.quantconnect.com/docs/v2/lean-engine/contributions/datasets
markdown: https://www.quantconnect.com/docs/v2/lean-engine/contributions/datasets.md
language: python
source: https://github.com/QuantConnect/Documentation/tree/master/06%20LEAN%20Engine/02%20Contributions/01%20Datasets
modified: 2026-10-29
index: https://www.quantconnect.com/llms.txt
---

# Datasets

[Documentation](https://www.quantconnect.com/docs/v2.md) > [LEAN Engine](https://www.quantconnect.com/docs/v2/lean-engine.md) > Contributions > Datasets

> Code examples are shown in Python. Append `?lang=csharp` to this URL for the C# version of this page.

## Pages in This Section

- [Key Concepts](https://www.quantconnect.com/docs/v2/lean-engine/contributions/datasets/key-concepts.md): QuantConnect enables you to contribute by submitting your code to the QuantConnect platform.
- [Defining Data Models](https://www.quantconnect.com/docs/v2/lean-engine/contributions/datasets/defining-data-models.md): This page explains how to set up the data source SDK and use it to create data models.
- [Rendering Data](https://www.quantconnect.com/docs/v2/lean-engine/contributions/datasets/rendering-data/rendering-data-with-python.md)
- [Testing Data Models](https://www.quantconnect.com/docs/v2/lean-engine/contributions/datasets/testing-data-models.md)
- [Data Documentation](https://www.quantconnect.com/docs/v2/lean-engine/contributions/datasets/data-documentation.md)