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Stacks the input, if it admits the notion of stacking.
tf.contrib.autograph.stack( list_or_tensor, element_dtype=None, strict=True )
For example, a list of tensors can be stacked into a larger tensor. This function is similar to tf.stack, but it accepts non-lists and lists of non-tensors as arguments. In the latter case, the function does nothing.
element_dtype: tf.DType, optional dtypedtype for the elements in the list. Required if the input is stackable, and the list is untyped.
strict: bool, if True an error is raised if the input is not stackable. Otherwise the function is a no-op.
Any, if the input is stackable, the result will be a tf.Tensor. Otherwise, if strict=False, the result will be list_or_tensor.
ValueError: if strict=True and the input is not stackable.