Fixed #21319 -- Added documentation for the Form.fields attribute.

    <tr><th>Url:</th><td><input type="url" name="url" /></td></tr>

    <tr><th>Comment:</th><td><input type="text" name="comment" /></td></tr>

Accessing the fields from the form

----------------------------------

.. attribute:: Form.fields

You can access the fields of :class:`Form` instance from its ``fields``

attribute::

    >>> for row in f.fields.values(): print(row)

    ...

    <django.forms.fields.CharField object at 0x7ffaac632510>

    <django.forms.fields.URLField object at 0x7ffaac632f90>

    <django.forms.fields.CharField object at 0x7ffaac3aa050>

    >>> f.fields['name']

    <django.forms.fields.CharField object at 0x7ffaac6324d0>

You can alter the field of :class:`Form` instance to change the way it is

presented in the form::

    >>> f.as_table().split('\n')[0]

    '<tr><th>Name:</th><td><input name="name" type="text" value="instance" /></td></tr>'

    >>> f.fields['name'].label = "Username"

    >>> f.as_table().split('\n')[0]

    '<tr><th>Username:</th><td><input name="name" type="text" value="instance" /></td></tr>'

Beware not to alter the ``base_fields`` attribute because this modification

will influence all subsequent ``ContactForm`` instances within the same Python

process::

    >>> f.base_fields['name'].label = "Username"

    >>> another_f = CommentForm(auto_id=False)

    >>> another_f.as_table().split('\n')[0]

    '<tr><th>Username:</th><td><input name="name" type="text" value="class" /></td></tr>'

Accessing "clean" data

----------------------