Lots of Python web library action in recent years has been organized around the Web Server Gateway Interface (WSGI), and many WSGI proponents are heralding it as the beginning of the “third age” of Python web development. This talk explains what all the fuss is about, covers the basics of how WSGI applications, and WSGI middleware work together to create a much more flexible Python Web development ecosystem.

We will cover plain WSGI, and WebOb, which makes writing WSGI applications and WSGI middleware easier. WebOb has the proud distinction being used extensively as part of the base google app engine framework, as well as being used in TurboGears, pylons, and many bits of WSGI middleware.