keras-team/keras · error · AttributeError

The `shape` attribute of KerasTensor is immutable. One shoul

Error message

The `shape` attribute of KerasTensor is immutable. One should create a new instance of KerasTensor for this.

What it means

Error "The `shape` attribute of KerasTensor is immutable. One should create a new instance of KerasTensor for this." thrown in keras-team/keras.

Source

Thrown at keras/src/backend/common/keras_tensor.py:75

            )
        self._ragged_rank = (
            int(ragged_rank) if ragged_rank is not None else None
        )
        self._row_splits_dtype = (
            backend.standardize_dtype(row_splits_dtype)
            if row_splits_dtype is not None
            else None
        )
        self.name = name or auto_name(self.__class__.__name__)
        self.record_history = record_history

    @property
    def shape(self):
        return self._shape

    @shape.setter
    def shape(self, value):
        raise AttributeError(
            "The `shape` attribute of KerasTensor is immutable. One should "
            "create a new instance of KerasTensor for this."
        )

    @property
    def dtype(self):
        return self._dtype

    @dtype.setter
    def dtype(self, value):
        raise AttributeError(
            "The `dtype` attribute of KerasTensor is immutable. One should "
            "create a new instance of KerasTensor for this."
        )

    @property
    def sparse(self):
        return self._sparse

View on GitHub (pinned to 7a34a03db6)

When it happens

Trigger: Thrown at keras/src/backend/common/keras_tensor.py:75 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/94fd75a46fd323cd. Report an issue: GitHub.