ImportError: No module named theano

Question

I use the introduction in the deeplearning tutorials.

sudo apt-get install python-numpy python-scipy python-dev python-pip python-nose g++ libopenblas-dev git
sudo pip install Theano

There is no problem with numpy and scipy.test:

python -c "import numpy; numpy.test()"
python -c "import scipy; scipy.test()"

but when i use the the theano test:

python -c "import theano; theano.test()"

It told me "no module named theano" which confused me a lot.

Answer 1

In order to be certain of installing the version that will match your interpreter's and not pip's version of Python, you could try the following:

sudo -H python -m pip install Theano

Which would load the pip module corresponding to your interpreter.

If you're not a system administrator of your computer, or you just prefer to avoid installing python packages system-wide, you can do the following

pip install --user Theano

Third possibility would be to use a virtualenv

virtualenv env
source env/bin/activate
pip install Theano