book/03.image_classification/vgg.py dropout module wrong

[livc]

https://github.com/PaddlePaddle/book/blob/develop/03.image_classification/vgg.py#L40

Traceback (most recent call last):
  File "train.py", line 91, in <module>
    main()
  File "train.py", line 37, in main
    net = vgg_bn_drop(image)
  File "/home/lizhao/book/03.image_classification/vgg.py", line 40, in vgg_bn_drop
    drop = paddle.networks.dropout(input=conv5, dropout_rate=0.5)
AttributeError: 'module' object has no attribute 'dropout'

According to
https://github.com/PaddlePaddle/Paddle/blob/0beda8736ffcac80a95bea20f873d8972d2b5b5e/doc/api/v2/config/networks.rst#dropout_layer

This line should be

drop = paddle.networks.dropout_layer(input=conv5, dropout_rate=0.5)

[livc]

Can we close this issue? @lcy-seso

[lcy-seso]

Yes, this bug has been fixed by this PR PaddlePaddle/Paddle#2384, we can close this issue.