Werkzeug is a WSGI utility library for Python. It's widely used and BSD licensed.
from werkzeug.wrappers import Request, Response @Request.application def application(request): return Response('Hello World!') if __name__ == '__main__': from werkzeug.serving import run_simple run_simple('localhost', 4000, application)
Werkzeug started as a simple collection of various utilities for WSGI applications and has become one of the most advanced WSGI utility modules. It includes a powerful debugger, fully featured request and response objects, HTTP utilities to handle entity tags, cache control headers, HTTP dates, cookie handling, file uploads, a powerful URL routing system and a bunch of community contributed addon modules.
It does Unicode and doesn't enforce a specific template engine, database adapter or anything else. It doesn't even enforce a specific way of handling requests and leaves all that up to the developer.
Werkzeug is the base of frameworks such as Flask and more, as well as in house frameworks developed for commercial products and websites.