Presentation with Python inline code

[apm]

Hi all

I wonder whether there is a Python module that allows to present slides
with built-in Python effects. The presentation could be specified in an
XML file and presented by a Python program that allows some kind of
scripting to add nice effects and demonstrate live execution of code
within the slides.

Is such a thing available? The packages I found that come closest are
Bruce and Emersion, but they both don't really fit my bill ;-)