Fixed #17114 -- Handled integer values 0 and 1 for checkboxes like other...

        return super(TimeInput, self)._has_changed(self._format_value(initial), data)

class CheckboxInput(Widget):

    def __init__(self, attrs=None, check_test=bool):

    def __init__(self, attrs=None, check_test=None):

        super(CheckboxInput, self).__init__(attrs)

        # check_test is a callable that takes a value and returns True

        # if the checkbox should be checked for that value.

        if check_test is None:

            self.check_test = lambda v: not (v is False or v is None or v == '')

        else:

            self.check_test = check_test

    def render(self, name, value, attrs=None):

            result = False

        if result:

            final_attrs['checked'] = 'checked'

        if value not in ('', True, False, None):

        if not (value is True or value is False or value is None or value == ''):

            # Only add the 'value' attribute if a value is non-empty.

            final_attrs['value'] = force_unicode(value)

        return mark_safe(u'<input%s />' % flatatt(final_attrs))

        self.assertEqual(w.render('is_cool', False, attrs={'class': 'pretty'}), u'<input type="checkbox" name="is_cool" class="pretty" />')

        # regression for #17114

        self.assertEqual(w.render('is_cool', 0), u'<input checked="checked" type="checkbox" name="is_cool" value="0" />')

        self.assertEqual(w.render('is_cool', 1), u'<input checked="checked" type="checkbox" name="is_cool" value="1" />')

        # You can also pass 'attrs' to the constructor:

        w = CheckboxInput(attrs={'class': 'pretty'})

        self.assertEqual(w.render('is_cool', ''), u'<input type="checkbox" class="pretty" name="is_cool" />')