# circuits 2.1.0 documentation

Release: | 2.1.0
Date: | February 27, 2013

## Overview

circuits is a Lightweight Event driven and Asynchronous Application Framework for the Python Programming Language with a strong Component Architecture.

circuits also includes a lightweight, high performance and scalable HTTP/WSGI compliant web server as well as various I/O and Networking components.

To take full advantage of circuits and its architecture, circuits encourages you to design your application in terms of loosely coupled components. Circuits has a very powerful message passing system that enables components to interact with each other via events. Applications written this way tend to be more maintainable, easier to develop and scale to complex systems.

circuits’ Loosely Coupled Component Architecture allows for a high level of Reuse and Scalability. Simpler components can be combined together to form Complex Components and provide higher level functionality and abstraction. Much of the circuits component library is designed and built this way.

- Documentation: http://packages.python.org/circuits or Read the Docs.
- Project website: https://bitbucket.org/prologic/circuits/
- PyPI page: http://pypi.python.org/pypi/circuits

## Features

- event driven
- concurrency support
- component architecture
- asynchronous I/O components
- no required external dependencies
- full featured web framework (circuits.web)
- coroutine based synchronization primitives

## Requirements

- circuits has no dependencies beyond the Python Standard Library.

## Supported Platforms

- Linux, FreeBSD, Mac OS X
- Python 2.6, 2.7, 3.2, 3.3
- pypy 2.0

Windows: We acknowledge that Windows exists and make reasonable efforts
  to maintain compatibility. Unfortunately we cannot guarantee support at this time.

NB: We are working toward getting Windows supported.

## Installation

The simplest and recommended way to install circuits is with pip. You may install the latest stable release from PyPI with pip:

    > pip install circuits

If you do not have pip, you may use easy_install:

    > easy_install circuits

Alternatively, you may download the source package from the PyPi Page or the Downloads page on the Website; extract it and install using:

    > python setup.py install

## License

circuits is licensed under the MIT License.

## Feedback

We welcome any questions or feedback about bugs and suggestions on how to improve circuits. Let us know what you think about circuits. @pythoncircuits.

Do you have suggestions for improvement? Then please Create an Issue with details of what you would like to see. I’ll take a look at it and work with you to either incorporate the idea or find a better solution.

## Community

There is also a small community of circuits enthusiasts that you may find on the #circuits IRC Channel on the FreeNode IRC Network and the Mailing List.

### Contents

- Getting Started
- Tutorial
- The circuits Framework
- The circuits.web Framework
- HowTos
- API Reference
- Developer Docs
- ChangeLog
- Users
- Contributors
- Frequently Asked Questions

### Indices and tables

- Index
- Module Index
- Search Page
- Glossary