Fixed #22684 -- Amended SelectDateWidget.empty_label to accept a tuple of values.

        else:

            self.months = MONTHS

        # Optional string, list, or tuple to use as empty_label.

        if isinstance(empty_label, (list, tuple)):

            if not len(empty_label) == 3:

                raise ValueError('empty_label list/tuple must have 3 elements.')

            self.year_none_value = (0, empty_label[0])

            self.month_none_value = (0, empty_label[1])

            self.day_none_value = (0, empty_label[2])

        else:

            if empty_label is not None:

                self.none_value = (0, empty_label)

            self.year_none_value = self.none_value

            self.month_none_value = self.none_value

            self.day_none_value = self.none_value

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

        try:

            year_val, month_val, day_val = value.year, value.month, value.day

                        year_val, month_val, day_val = [int(v) for v in match.groups()]

        html = {}

        choices = [(i, i) for i in self.years]

        html['year'] = self.create_select(name, self.year_field, value, year_val, choices)

        html['year'] = self.create_select(name, self.year_field, value, year_val, choices, self.year_none_value)

        choices = list(six.iteritems(self.months))

        html['month'] = self.create_select(name, self.month_field, value, month_val, choices)

        html['month'] = self.create_select(name, self.month_field, value, month_val, choices, self.month_none_value)

        choices = [(i, i) for i in range(1, 32)]

        html['day'] = self.create_select(name, self.day_field, value, day_val, choices)

        html['day'] = self.create_select(name, self.day_field, value, day_val, choices, self.day_none_value)

        output = []

        for field in _parse_date_fmt():

                return '%s-%s-%s' % (y, m, d)

        return data.get(name, None)

    def create_select(self, name, field, value, val, choices):

    def create_select(self, name, field, value, val, choices, none_value):

        if 'id' in self.attrs:

            id_ = self.attrs['id']

        else:

            id_ = 'id_%s' % name

        if not self.is_required:

            choices.insert(0, self.none_value)

            choices.insert(0, none_value)

        local_attrs = self.build_attrs(id=field % id_)

        s = Select(choices=choices)

        select_html = s.render(field % name, val, local_attrs)

        .. versionadded:: 1.8

        If the :class:`~django.forms.DateField` is not required,

        :class:`SelectDateWidget` will have an empty choice at the top of

        the list. You can change the text of this label

        (which is ``---`` by default) with the ``empty_label`` attribute::

        :class:`SelectDateWidget` will have an empty choice at the top of the

        list (which is ``---`` by default). You can change the text of this

        label with the ``empty_label`` attribute. ``empty_label`` can be a

        ``string``, ``list``, or ``tuple``. When a string is used, all select

        boxes will each have an empty choice with this label. If ``empty_label``

        is a ``list`` or ``tuple`` of 3 string elements, the select boxes will

        have their own custom label. The labels should be in this order

        ``('year_label', 'month_label', 'day_label')``.

            # A custom empty label

        .. code-block:: python

            # A custom empty label with string

            field1 = forms.DateField(widget=SelectDateWidget(empty_label="Nothing"))

            # A custom empty label with tuple

            field1 = forms.DateField(widget=SelectDateWidget(

                empty_label=("Choose Year", "Choose Month", "Choose Day"))

<option value="2013">2013</option>

</select>""")

        w = SelectDateWidget(years=('2014',), empty_label='empty_label')

        # Rendering the default state with empty_label setted.

        self.assertInHTML('<option value="0">empty_label</option>', w.render('mydate', ''), count=3)

        a = GetDate({'mydate_month': '4', 'mydate_day': '1', 'mydate_year': '2008'})

        self.assertTrue(a.is_valid())

        self.assertEqual(a.cleaned_data['mydate'], datetime.date(2008, 4, 1))

        d = GetDate({'mydate_month': '1', 'mydate_day': '1', 'mydate_year': '2010'})

        self.assertTrue('<label for="id_mydate_month">' in d.as_p())

    def test_selectdate_empty_label(self):

        w = SelectDateWidget(years=('2014',), empty_label='empty_label')

        # Rendering the default state with empty_label setted as string.

        self.assertInHTML('<option value="0">empty_label</option>', w.render('mydate', ''), count=3)

        w = SelectDateWidget(years=('2014',), empty_label=('empty_year', 'empty_month', 'empty_day'))

        # Rendering the default state with empty_label tuple.

        self.assertHTMLEqual(w.render('mydate', ''), """<select name="mydate_month" id="id_mydate_month">

<option value="0">empty_month</option>

<option value="1">January</option>

<option value="2">February</option>

<option value="3">March</option>

<option value="4">April</option>

<option value="5">May</option>

<option value="6">June</option>

<option value="7">July</option>

<option value="8">August</option>

<option value="9">September</option>

<option value="10">October</option>

<option value="11">November</option>

<option value="12">December</option>

</select>

<select name="mydate_day" id="id_mydate_day">

<option value="0">empty_day</option>

<option value="1">1</option>

<option value="2">2</option>

<option value="3">3</option>

<option value="4">4</option>

<option value="5">5</option>

<option value="6">6</option>

<option value="7">7</option>

<option value="8">8</option>

<option value="9">9</option>

<option value="10">10</option>

<option value="11">11</option>

<option value="12">12</option>

<option value="13">13</option>

<option value="14">14</option>

<option value="15">15</option>

<option value="16">16</option>

<option value="17">17</option>

<option value="18">18</option>

<option value="19">19</option>

<option value="20">20</option>

<option value="21">21</option>

<option value="22">22</option>

<option value="23">23</option>

<option value="24">24</option>

<option value="25">25</option>

<option value="26">26</option>

<option value="27">27</option>

<option value="28">28</option>

<option value="29">29</option>

<option value="30">30</option>

<option value="31">31</option>

</select>

<select name="mydate_year" id="id_mydate_year">

<option value="0">empty_year</option>

<option value="2014">2014</option>

</select>""")

        self.assertRaisesMessage(ValueError, 'empty_label list/tuple must have 3 elements.',

            SelectDateWidget, years=('2014',), empty_label=('not enough', 'values'))

    def test_multiwidget(self):

        # MultiWidget and MultiValueField #############################################

        # MultiWidgets are widgets composed of other widgets. They are usually