python - Django-graphos SimpleDataSource extension issue -


i'm building django web app use graphos add google charts app. have class customdatasource extending simpledatasource , i'm overriding get_data() method , working super fine , charts showing up.

now added __init__ constructor custom class pass variable need in get_data(). constructor being called fine , variable passed weird reason, get_data() method never called , cannot show chart.

class customdatasource(simpledatasource):     def __init__(self, data, wcs):         super(customdatasource, self).__init__(data)         self.wcs = wcs         print self.wcs      def get_data(self):         data = super(customdatasource, self).get_data()         print 'get data '         # build data returned , return

any ideas?

i solved it. made variable optional: 

class customdatasource(simpledatasource):     def __init__(self, data, wcs = none):         super(customdatasource, self).__init__(data)         self.wcs = wcs         print self.wcs      def get_data(self):         data = super(customdatasource, self).get_data()         print 'get data '         # build data returned , return

i don't know why solved issue did.


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