Keras: get two errors: cannot import activity_l2, cannot import layer_from_config

[songhuiming]

Hi, I installed the latest keras(version 2.0.1) in docker. but the job failed when I try to import these two:

ImportError                               Traceback (most recent call last)
<ipython-input-6-72e860176cbd> in <module>()
     40 from keras.layers import TimeDistributed, Activation, SimpleRNN, GRU
     41 from keras.layers.core import Flatten, Dense, Dropout, Lambda
---> 42 from keras.regularizers import l2, activity_l2, l1, activity_l1
     43 from keras.layers.normalization import BatchNormalization
     44 from keras.optimizers import SGD, RMSprop, Adam

ImportError: cannot import name activity_l2



ImportError                               Traceback (most recent call last)
<ipython-input-7-a9899ee596df> in <module>()
     43 from keras.layers.normalization import BatchNormalization
     44 from keras.optimizers import SGD, RMSprop, Adam
---> 45 from keras.utils.layer_utils import layer_from_config
     46 from keras.metrics import categorical_crossentropy, categorical_accuracy
     47 from keras.layers.convolutional import *

ImportError: cannot import name layer_from_config

[WeiFoo]

I experienced the same issue. But when installing keras==1.2.2, issue fixed.
I guess there're some breaking issues in 2.0.1

[GTouzin]

I have the same issue with 2.0.2

40 from keras.layers import TimeDistributed, Activation, SimpleRNN, GRU
41 from keras.layers.core import Flatten, Dense, Dropout, Lambda
42 from keras.regularizers import l2, activity_l2, l1, activity_l1
43 from keras.layers.normalization import BatchNormalization
44 from keras.optimizers import SGD, RMSprop, Adam

ImportError: cannot import name 'activity_l2'

[nafizh]

I also have the same errors on keras 2.0.2. Anybody found any solutions?

[mike-grayhat]

You can find here https://github.com/fchollet/keras/commit/1c630c3e3c8969b40a47d07b9f2edda50ec69720 that activity_l2 is deleted and was equal to l2.

[WeiFoo]

Try

pip install keras=1.2.2

On Sat, Mar 25, 2017 at 09:52 Gump.Cheng [e-mail] wrote:

@WeiFoo https://github.com/WeiFoo Can I ask for the method to install
the keras1.22?

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[MohmadAyman]

same issue

[armando-fandango]

I have the same issue with Keras 2.0.2

[stiebels]

Had the same issue with Keras 2.0.2. Downgrading to 1.2.2 helped.

[lotempeledGong]

same issue

[Moondra]

I just ran into the same problem.
Windows 7, Jupyter notebook and Python 2.7.

[pierrewessman]

Also run into this problem. Windows 10, Anaconda, Jupyter Notebook, Python 2.7 (installed with pip install keras)

[darthdeus]

Same here on 3.5.3 on Linux with keras 2.0.3. Is there a replacement function one can use to get the same functionality?

[Danielhiversen]

Instead of activity_l2you can use l2: https://github.com/fchollet/keras/commit/1c630c3e3c8969b40a47d07b9f2edda50ec69720#diff-6e3349d3f432641cc969b702bcd3edafL111

I am not familiar with layer_from_config, but it seams that it is replaced with layers.deserialize https://github.com/fchollet/keras/commit/ebe84eb3a1c3beb44e25fa4f00a89f2c71dde2cc#diff-98d8790a4331685d2a81334c398c4b58R229
from ..layers import deserialize as deserialize_layer

[Opdoop]

After change the import command, the code pass the compile.

#from keras.utils.layer_utils import layer_from_config
from keras.layers import deserialize as layer_from_config

Reference(http://forums.fast.ai/t/keras-2-released/1956)

[riteshshrv]

I changed the code to this to make it work:

from keras.regularizers import L1L2, l2, l1
activity_l1 = L1L2(l1=1)
activity_l2 = L1L2(l2=1)

[Armarshall05]

I was using a code from fast ai (utills.py) and ran into several issues related to keras version. Downgrading was a simple fix. ( pip install keras == 1.2.2 )

[Manish-rai21bit]

I had the exact same issue.
I tried downgrading Keras to 1.2.2. I was using the utils file from fast.ai. This is what i did and that worked to remove the error from activity_l2 but i still get the layer_from_config error

from keras.regularizers import L1L2, l2, l1
activity_l1 = L1L2(l1=1)
activity_l2 = L1L2(l2=1)

That solved the activity_l1 but the error for layer_from_config shill persists

[SuperShinyEyes]

Fast.ai student here. I found out that after you install Keras 1.2.2. you must restart Jupyter server.

[liambarnett]

None of the above worked for me. Downgraded to 1.2.2, restarted and ended up with the same error. Resorted to downloading updated modules here - https://github.com/roebius/deeplearning_keras2 and still hitting bugs. Hope this gets addressed soon.

[ranjita-naik]

I'm using python 2.7. pip install 'keras<2' + kernel restart resolved the issue for me.

[mattburrows]

I've just grep'd the entirety of deeplearning1 and there is no reference to the imported module. Consequently I suspect that "from keras import layer_from_config" can safely be commented out.

[wt-huang]

Closing as this is resolved

[Yan-echo]

pip install keras==1.2.2
can solve the problem.