Theano AttributeError: 'module' object has no attribute 'relu'

Question

I want to use theano.tensor.nnet.relu, but I keep getting this error:

AttributeError: 'module' object has no attribute 'relu' 

I have already updated theano via sudo pip install --upgrade theano command as described in theano's documentation, also i've tried sudo pip install --upgrade --no-deps theano. Neither worked, I still get the same error.

I was trying to do theano -v to confirm that I have installed the latest version but then I get the following error: -bash: theano: command not found

So my two questions here are:

• How can I see theano's version?
• Am I doing something wrong when updating theano? How can I solve the error first mentioned?

Answer 1

relu is available for theano >= 0.7.1. My guess is that pip linked to theano==0.7.

You can check theano version with pip freeze:

pip freeze | grep Theano

So you have to install latest theano with pointing pip to theano git repo :

pip install --upgrade --no-deps git+git://github.com/Theano/Theano.git

Also note that relu is function and not module, so to access it you have to use one of imports below:

from theano.tensor.nnet import relu # access `relu` as is ..
import theano.tensor.nnet as theano_nnet #access `relu` as `theano_nnet.relu`