PyLLMut 0.2.0

An LLM-driven mutant generator library for Python

PyLLMut

Introduction

PyLLMut—pronounced "Pill Moot" (/pɪl muːt/)—is a research-based LLM-driven mutant generator library for Python. It uses Large Language Models (LLMs) to generate mutants for a given Python module. The current version of PyLLMut supports only gpt-4o-mini through its API. We plan to add support for more models, such as DeepSeek-R1.

Documentation

Full documentation is available at PyLLMut Documentation.

Installation

To install PyLLMut, follow the instructions in the Installation Guide.

Usage

For a quick example of how to use PyLLMut, refer to the Quick Start Guide.

API Reference

For details on PyLLMut's available API, refer to the API Reference.

Acknowledgments

PyLLMut is a research-based project, inspired by the study On the Use of Large Language Models in Mutation Testing, which was originally for Java.