How do I use __getitem__ and __iter__ and return values from a dictionary?

Question

I have an object with a dictionary that I want to access via __getitem__ as well as iterate over (values only, keys don\'t matter) but am not sure how to do it.

Answer 1

>>> class Library(object):
...     def __init__(self):                                                     
...             self.books = { 'title' : object, 'title2' : object, 'title3' : object, }
...     def __getitem__(self, i):
...             return self.books[i]
...     def __iter__(self):
...             return self.books.itervalues()
... 
>>> library = Library()
>>> library['title']

>>> for book in library:
...     print book
...