def filter ( self , obj , * args , * * kwargs ) : for _ , _ , func in self . _filter_order : obj = func ( obj , * args , * * kwargs ) if obj is None : return None return obj
applying a filter python
Filter the given object through the filter chain .
def filter(self, obj, *args, **kwargs):
        """
        Filter the given object through the filter chain.

        :param obj: The object to filter
        :param args: Additional arguments to pass to each filter function.
        :param kwargs: Additional keyword arguments to pass to each filter
                       function.
        :return: The filtered object or :data:`None`

        See the documentation of :class:`Filter` on how filtering operates.

        Returns the object returned by the last function in the filter chain or
        :data:`None` if any function returned :data:`None`.
        """
        for _, _, func in self._filter_order:
            obj = func(obj, *args, **kwargs)
            if obj is None:
                return None
        return obj