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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def filter_any_above_threshold( self, multi_key_fn, value_dict, threshold, default_value=0.0):
 """Like filter_above_threshold but `multi_key_fn` returns multiple keys and the element is kept if any of them have a value above the given threshold. Parameters multi_key_fn : callable Given an element of this collection, returns multiple keys into `value_dict` value_dict : dict Dict from keys returned by `extract_key_fn` to float values threshold : float Only keep elements whose value in `value_dict` is above this threshold. default_value : float Value to use for elements whose key is not in `value_dict` """

        def filter_fn(x):
            for key in multi_key_fn(x):
                value = value_dict.get(key, default_value)
                if value > threshold:
                    return True
            return False
        return self.filter(filter_fn)