(self, *args, **kwargs)
return self._known_aggregation('var', *args, **kwargs)
Rolling variance
Rolling variance
Rolling variance
def var(self, *args, **kwargs):
        """ Rolling variance """
        return self._known_aggregation('var', *args, **kwargs)
def var ( self , * args , * * kwargs ) : return self . _known_aggregation ( 'var' , * args , * * kwargs )