Data on the web
There are several approaches to represent data using Python on a web page (see WebProgramming).
Another interesting article about this is "Choosing a Templating System".
Different approaches lead to different design decisions. Often it is the principal reason that new template systems get invented:
Some presentation systems fall neatly into the categories above. Others are less easy to classify but have a closer association to one category than the others.
DOMTemplate (from TwistedMatrix)
DTML (Document Template Markup Language - see Zope)
wt (see JonsPythonModules)
ZPT (Zope Page Templates - see Zope)
PTL (from Quixote)
Feel free to add more abstract descriptions and more examples to help people decide what they are looking for!
Do you need to use full-fledged python, embedded bits of definitions but no functions -- there is a range of options depending on your problem. Sometimes there's no python in "the output page" -- as in raw documents put thru a filter. Or there may be limited amounts of embedded python -- as in YAPTU and other filters. Or python may be the matrix language, with text embedded within it. Your handler code can be anything from a substituter (using, say, regular expressions to catch things to be altered) to a mini python engine. See 'Python Journal 3(1)' a feature article that draws together several of the options above into a series on the pure-text to pure-python "dimension". See what your options are.