The Swiss Army knife of Python web development
Werkzeug is the Swiss Army(r) knife of Python web development.
It provides useful classes and functions for any WSGI application take make life much easier. All of the provided classes are independed from each other so you can mix it with any other library.
Request / Response objects
These objects wrap the WSGI environ and start_response objects. They handle unicode conversion, form data parsing, cookie management and much more in a django like manner.
Just subclass them and hook your own features in.
A class that can wrap a wsgi.input stream so that it reports it’s progress into the active session, a file on the filesystem etc. This is very useful if you want to give your users a visual feedback for file uploads using AJAX.
Application debugger middleware
If you want to debug your WSGI application you can hook in the DebuggedApplication middleware that allows you to inspect the frames of tracebacks either by looking at the current locals and sourcecode or starting an interactive shell in one of the frames.
Shared data middleware
In production environments static data is usually served by a lightweight webserver like lighttpd or nginx. But during development it makes no sense to install another service on the computer so the SharedDataMiddleware can serve static files in your WSGI application.
Unicode aware data processing
The utils package contains functions that work like their counterparts in the builtin urllib or cgi module but are unicode aware. Per default they expect utf-8 strings like the request/response objects but you can pass an encoding to the too.
Mini template engine
For small projects you often face the problem that a real template engine means another requirement but the builtin string formattings (or string template) operations are not enough for the application. Werkzeug provides a minimal template engine that looks and behaves like the e-ruby template engine.
The Local object works pretty much like a normal thread local but it has support for py.magic greenlets too. Additionally there is a LocalManager that allows you to clean up all the context locals you have instanciated.
Werkzeug provides a Client class that can be used to test applications. Just instanciate it with the app and fire virtual requests.
|copyright:||2007 by Armin Ronacher.|
|license:||BSD, see LICENSE for more details.|
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