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Asserts that the given tensor is a scalar (i.e. zero-dimensional).

    tensor, name=None, message=None

This function raises ValueError unless it can be certain that the given tensor is a scalar. ValueError is also raised if the shape of tensor is unknown.


  • tensor: A Tensor.
  • name: A name for this operation. Defaults to "assert_scalar"
  • message: A string to prefix to the default message.


The input tensor (potentially converted to a Tensor).


  • ValueError: If the tensor is not scalar (rank 0), or if its shape is unknown.