How do web templates separate content and logic?

[John Salerno]

I've been doing some research on web templates, and even though I read that 
they help enforce the MVC pattern, I don't really understand how they are 
keeping content and logic separated. Layout is easy, it's just not there as 
far as I can see, and CSS can be used for that.

But when you have a templating system that mixes HTML and Python code, how 
is this helping to keep things separate? It seems to be the same issue that 
some people have with PHP (that it is too integrated with the HTML, rather 
than being separate).

Of course, I suppose whether or not any of this matters depends on if you 
are a web designer or a programmer, but am I missing something about 
templates, or is it really the case that they, more or less by definition, 
combine content and logic?

Thanks.