keras-team/keras · error · ValueError

`pool_mode` must be either 'max' or 'average'. Received: {se

Error message

`pool_mode` must be either 'max' or 'average'. Received: {self.pool_mode}.

What it means

Error "`pool_mode` must be either 'max' or 'average'. Received: {self.pool_mode}." thrown in keras-team/keras.

Source

Thrown at keras/src/layers/pooling/base_pooling.py:58

    def call(self, inputs):
        if self.pool_mode == "max":
            return ops.max_pool(
                inputs,
                pool_size=self.pool_size,
                strides=self.strides,
                padding=self.padding,
                data_format=self.data_format,
            )
        elif self.pool_mode == "average":
            return ops.average_pool(
                inputs,
                pool_size=self.pool_size,
                strides=self.strides,
                padding=self.padding,
                data_format=self.data_format,
            )
        else:
            raise ValueError(
                "`pool_mode` must be either 'max' or 'average'. Received: "
                f"{self.pool_mode}."
            )

    def compute_output_shape(self, input_shape):
        return compute_pooling_output_shape(
            input_shape,
            self.pool_size,
            self.strides,
            self.padding,
            self.data_format,
        )

    def get_config(self):
        config = super().get_config()
        config.update(
            {
                "pool_size": self.pool_size,

View on GitHub (pinned to 7a34a03db6)

When it happens

Trigger: Thrown at keras/src/layers/pooling/base_pooling.py:58 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of keras-team/keras@7a34a03db6 (2026-08-25). Data as JSON: /api/errors/9a8296e1c2d4ff0c. Report an issue: GitHub.