[lxml-dev] list-like views?

[Ian Bicking]

In the atom wrapper I made, I expose a categories attribute on entries. 
  This returns a list (-like object) of the <category> elements.  It 
also lets you add and remove from that list to modify the entry.

I generally don't do this, as it feels a little too clever to me.  The 
list-like object isinstance(obj, list), but it's a subclass, and has a 
different repr.  But I still worry about confusion.

Anyway, I was thinking of adding something similar to HtmlElement for 
.classes, which would expose the HTML classes.  This way you wouldn't 
have to have methods like has_class, add_class, and remove_class (or do 
it manually with string manipulation).  How does this sound?  The class 
I used is _LiveList, here: 
https://svn.openplans.org/svn/TaggerStore/trunk/taggerstore/atom.py -- 
basically it just calls some callbacks everytime something is added or 
removed from the list.

   Ian