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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 cub200_iterator(data_path, batch_k, batch_size, data_shape):
 """Return training and testing iterator for the CUB200-2011 dataset."""

    return (CUB200Iter(data_path, batch_k, batch_size, data_shape, is_train=True),
            CUB200Iter(data_path, batch_k, batch_size, data_shape, is_train=False))