Feedgen PPG plugin example

ppg_feedgen_plugin.py

from feedgen.ext.base import BaseExtension
from feedgen.feed import FeedGenerator

fg = FeedGenerator()

class PpgExtension(BaseExtension):
    __frequency = None
    __daysLive = None

    def extend_rss(self, rss_feed):
        NS = 'http://bbc.co.uk/2009/01/ppgRss'
        channel = rss_feed[0]

        if self.__frequency or self.__daysLive:
            seriesDetails = etree.SubElement(channel, f'{{{NS}}}seriesDetails')
            if self.__frequency :
                seriesDetails.set('frequency', self.__frequency)
            if self.__daysLive:
                seriesDetails.set('daysLive', self.__daysLive)

        return rss_feed

    def extend_ns(self):
        return {'ppg': 'http://bbc.co.uk/2009/01/ppgRss'}

    def seriesDetails(self, frequency='oneoff', daysLive='-1'):
        self.__frequency = frequency
        self.__daysLive = daysLive


fg.register_extension("ppg", PpgExtension)
fg.ppg.seriesDetails(frequency='oneoff', daysLive='-1')