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sidebar_position: 0.5
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# Repository Structure
If you plan on contributing to LangChain code or documentation, it can be useful
to understand the high level structure of the repository.
LangChain is organized as a [monorepo](https://en.wikipedia.org/wiki/Monorepo) that contains multiple packages.
You can check out our [installation guide](/docs/how_to/installation/) for more on how they fit together.
Here's the structure visualized as a tree:
```text
.
├── cookbook # Tutorials and examples
├── docs # Contains content for the documentation here: https://python.langchain.com/
├── libs
│ ├── langchain
│ │ ├── langchain
│ │ ├── tests/unit_tests # Unit tests (present in each package not shown for brevity)
│ │ ├── tests/integration_tests # Integration tests (present in each package not shown for brevity)
│ ├── community # Third-party integrations
│ │ ├── langchain-community
│ ├── core # Base interfaces for key abstractions
│ │ ├── langchain-core
│ ├── experimental # Experimental components and chains
│ │ ├── langchain-experimental
| ├── cli # Command line interface
│ │ ├── langchain-cli
│ ├── text-splitters
│ │ ├── langchain-text-splitters
│ ├── standard-tests
│ │ ├── langchain-standard-tests
│ ├── partners
│ ├── langchain-partner-1
│ ├── langchain-partner-2
│ ├── ...
│
├── templates # A collection of easily deployable reference architectures for a wide variety of tasks.
```
The root directory also contains the following files:
* `pyproject.toml`: Dependencies for building docs and linting docs, cookbook.
* `Makefile`: A file that contains shortcuts for building, linting and docs and cookbook.
There are other files in the root directory level, but their presence should be self-explanatory. Feel free to browse around!
## Documentation
The `/docs` directory contains the content for the documentation that is shown
at https://python.langchain.com/ and the associated API Reference https://python.langchain.com/v0.2/api_reference/langchain/index.html.
See the [documentation](/docs/contributing/documentation/) guidelines to learn how to contribute to the documentation.
## Code
The `/libs` directory contains the code for the LangChain packages.
To learn more about how to contribute code see the following guidelines:
- [Code](/docs/contributing/code/): Learn how to develop in the LangChain codebase.
- [Integrations](./integrations.mdx): Learn how to contribute to third-party integrations to `langchain-community` or to start a new partner package.
- [Testing](./testing.mdx): Guidelines to learn how to write tests for the packages.
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