在链接：https : //www.tensorflow.org/tutorials/images/transfer_learning
(raw_train, raw_validation, raw_test), metadata = tfds.load(
'cats_vs_dogs',
split=['train[:80%]', 'train[80%:90%]', 'train[90%:]'],
with_info=True,
as_supervised=True,
)
为什么有错误
KeyError: "Invalid split train[:80%]. Available splits are: ['train']"