def make_node(self, x, y):
        x = as_sparse_variable(x)
        y = as_sparse_variable(y)

        if x.type.format is not y.type.format:
            raise NotImplementedError()
        return gof.Apply(self,
                         [x, y],
                         [SparseType(dtype='uint8',
                                     format=x.type.format)()])
dataset/ETHPy150Open rizar/attention-lvcsr/libs/Theano/theano/sparse/basic.py/__ComparisonOpSS.make_node/operator `!=` -> `is not`