# LangGraph Reflection and Rewrite Workflow

This repository demonstrates a simple **Python** project built with the
[LangGraph](https://github.com/langchain-ai/langgraph) framework.  
The workflow consists of two custom nodes:

1. **ReflectNode** – Generates a reflection message based on user input.
2. **RewriteNode** – Rewrites the reflection into a more formal style.

## Project Structure

```
src/
├── nodes/
│   ├── reflect.py   # ReflectNode implementation
│   └── rewrite.py   # RewriteNode implementation
├── graph.py         # Graph definition
└── main.py          # Entry point to run the graph
tests/
├── test_reflect.py
├── test_rewrite.py
└── test_graph.py
requirements.txt
```

## Installation

```bash
# Create a virtual environment (optional but recommended)
python -m venv venv
source venv/bin/activate   # On Windows use `venv\Scripts\activate`

# Install dependencies
pip install -r requirements.txt
```

## Running the Workflow

```bash
python src/main.py
```

You should see output similar to:

```
Graph output: {'rewritten': "I notice that you said: 'Hello world'. Let's reflect on that."}
```

## Testing

Run the test suite with `pytest`:

```bash
pytest
```

All tests should pass, confirming that the nodes and graph work as expected.

## License

MIT License