# Systems Engineering Library (se-lib)

Python toolkit for integrated systems modeling, continuous and discrete event simulation, model diagramming, reliability analysis, and project management modeling.

[![PyPI Version](https://img.shields.io/pypi/v/se-lib)](https://pypi.org/project/se-lib/)
[![Python Versions](https://img.shields.io/pypi/pyversions/se-lib)](https://pypi.org/project/se-lib/)
[![License](https://img.shields.io/badge/license-MIT-green)](LICENSE)
[![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/drive/1J0Dnb2qmoMiuJWJTAsMQ5c3F6vjn4CzQ?usp=sharing)

---

## 🚀 Quick Start

Try se-lib instantly in a browser with no installation required:

- <img src="https://colab.research.google.com/img/colab_favicon_256px.png" alt="Colab" width="20"/> [se-lib examples](https://colab.research.google.com/drive/1J0Dnb2qmoMiuJWJTAsMQ5c3F6vjn4CzQ?usp=sharing)
- <img src="https://colab.research.google.com/img/colab_favicon_256px.png" alt="Colab" width="20"/> [se-lib system dynamics modeling user's guide and examples](https://colab.research.google.com/drive/1oE5TBdF-hpJTQbQgSmPgmPoofBgOTR0B?usp=sharing)
- <img src="https://colab.research.google.com/img/colab_favicon_256px.png" alt="Colab" width="20"/> [se-lib discrete event modeling user's guide and examples](https://colab.research.google.com/drive/1arDDaaltEyGLomaGo5ZKVumtviloUAyG?usp=sharing)


## 📚 Online Manuals

These are HTML manual versions of the executable notebooks above.

- 📖 [se-lib system dynamics modeling users guide and examples](http://se-lib.org/manuals/system_dynamics/)
- 📖 [se-lib discrete event modeling users guide and examples](http://se-lib.org/manuals/discrete_event)

## se-lib AI ChatBot
https://se-lib.org/ai/ai.html

## 💾 Installation

From PyPI:
```bash
pip install se-lib
```

From source:
```bash
git clone https://github.com/se-lib/se-lib.git
cd se-lib
pip install .
```


## 📜 License and Version

**Version**: .43.0

**Copyright**: 2022-2026 se-lib Development Team

**License**: MIT

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

