def get_series_vintage_dates(self, series_id):
        """
        Get a list of vintage dates for a series. Vintage dates are the dates in history when a
        series' data values were revised or new data values were released.

        Parameters
        ----------
        series_id : str
            Fred series id such as 'CPIAUCSL'

        Returns
        -------
        dates : list
            list of vintage dates
        """
        url = "%s/series/vintagedates?series_id=%s" % (self.root_url, series_id)
        root = self.__fetch_data(url)
        if root is None:
            raise ValueError('No vintage date exists for series id: ' + series_id)
        dates = []
        for child in root.getchildren():
            dates.append(self._parse(child.text))
        return dates
def get_series_vintage_dates ( self , series_id ) : url = "%s/series/vintagedates?series_id=%s" % ( self . root_url , series_id ) root = self . __fetch_data ( url ) if root is None : raise ValueError ( 'No vintage date exists for series id: ' + series_id ) dates = [ ] for child in root . getchildren ( ) : dates . append ( self . _parse ( child . text ) ) return dates
Get a list of vintage dates for a series. Vintage dates are the dates in history when a
        series' data values were revised or new data values were released.

        Parameters
        ----------
        series_id : str
            Fred series id such as 'CPIAUCSL'

        Returns
        -------
        dates : list
            list of vintage dates