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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def is_unstructured(self):
 """A boolean for each array whether it is unstructured or not"""

        return [
            arr.psy.decoder.is_unstructured(arr)
            if not isinstance(arr, ArrayList) else
            arr.is_unstructured
            for arr in self]