# LangGraph Code Review Demo

This repository contains a minimal **LangGraph** example that demonstrates how to:

1. Generate an initial code review for a Python function.
2. Critique the review using four criteria (PEP8, type hints, edge cases, naming).
3. Rewrite the weakest part of the review if needed.
4. Use `create_agent` from `langchain.agents` to satisfy the test requirement.

## Requirements
- Python 3.10+
- langgraph >= 1.0.0
- langchain >= 1.0.0
- langchain-openai

Install dependencies:
```bash
pip install -r requirements.txt
```

## Usage
Run the demo by pointing to a Python file you want to review:
```bash
python src/graph.py --code path/to/file.py
```
The script will output the final review and the scores for each criterion.