>>> from listmodel import XMLDoc, QueryAttr, set_name
>>> xml = u"""<bookshelf>
...         <name>My Bookshelf</name>
...         <book>
...             <title>1984</title>
...             <author>Orwell, George</author>
...             <isbn>978-0-452-28423-4</isbn>
...             <chapter id="1">...</chapter>
...             <chapter id="2">...</chapter>
...             <chapter id="3">...</chapter>
...         </book>
...         <book>
...             <title>The man in the high castle</title>
...             <author>Dick, Philip K.</author>
...             <isbn>0679740678</isbn>
...             <chapter id="1">...</chapter>
...             <chapter id="2">...</chapter>
...             <chapter id="3">...</chapter>
...         </book>
...     </bookshelf>
... """
>>> class Bookshelf(XMLDoc):
...     class Iterable(XMLDoc):
...         __query__ = "/bookshelf/book"
...
...         @set_name("Chapter")
...         class Iterable(XMLDoc):
...             __query__ = "chapter"
...             id = QueryAttr("@id")
...
...         isbn = QueryAttr("isbn/text()")
...         title = QueryAttr("title/text()")
...         author = QueryAttr("author/text()")
...
...         @QueryAttr("author/text()")
...         def author_first_name(self, value):
...             return value.split(", ")[1]
...
...     name = QueryAttr("/bookshelf/name/text()")
>>> shelf = Bookshelf.fromstring(xml)
>>> shelf
<Bookshelf (name='My Bookshelf')>
>>> shelf.name
'My Bookshelf'
>>> books = list(shelf)
>>> len(books)
2
>>> books[1].title
'The man in the high castle'
>>> books[1].author_first_name
'Philip K.'
>>> list(books[0])
[<Chapter (id='1')>, <Chapter (id='2')>, <Chapter (id='3')>]