This symbol is a type alias.
Source:
Shape = Union[
tensorflow.python.framework.tensor.Tensor,
tensorflow.python.framework.sparse_tensor.SparseTensor,
tensorflow.python.ops.ragged.ragged_tensor.RaggedTensor,
tensorflow.python.framework.ops.EagerTensor,
numpy.ndarray,
int,
float,
str,
bool,
tf_agents.types.ShapeSequence
,
tensorflow.python.framework.tensor_shape.TensorShape
]