def __getitem__(self, item):
composite_item = self.form.get_composite_field_value(self.name)<EOL>return composite_item[item]<EOL>
Allow named access to the form fields and forms contained in the
composite fields. For ``FormField``s you get a bound field, for
``FormSetField`` you can use and integer index lookup for a specific
form.

Examples:

.. code:: python

    # Gives ``street`` field of nested ``address`` form.
    form['address']['street']

.. code:: django

    {# That is useful in the template as well: #}
    {{ form.address.street }}