Bottle

Bottle is a WSGI micro web-framework for Python, distributed as a single file module with no dependencies beyond the Python Standard Library. It maps incoming requests to function calls through routing that supports clean and dynamic URLs, and includes a built-in template engine alongside support for mako, jinja2 and cheetah templates. Utilities cover form data, file uploads, cookies, headers and other HTTP features, while a built-in HTTP development server supports deployment through WSGI-capable servers such as gunicorn, paste and cheroot.

The framework includes routing rule syntax and wildcard filters, configuration loading from files, Python modules or dictionaries, and a plugin system with a plugin API and examples such as SQLitePlugin. Documentation covers request routing, templating, HTTP utilities, error handling, deployment, asynchronous applications and WebSockets. Releases are available through pip or as a downloadable bottle.py file, with version 0.12 designated LTS for older Python versions and 0.13 supporting maintained Python releases. Code and documentation are distributed under the MIT License.