How to install Theano on Anaconda Python 2.7 x64 on Windows?

Question

I wonder how to install Theano on Anaconda Python 2.7 x64 on Windows 7 x64. The Theano website provides some instructions but is not clear as to what is specific to Anaconda

Answer 1

The trick is that YOU NEED TO CREATE AN ENVIRONMENT/WORKSPACE FOR PYTHON. This solution should work for Python 2.7 but at the time of writing keras can run on python 3.5, especially if you have the latest anaconda installed (this took me awhile to figure out so I'll outline the steps I took to install KERAS in python 3.5):

-- CREATE ENVIRONMENT/WORKSPACE FOR PYTHON 3.5:

1. C:\conda create --name neuralnets python=3.5
2. C:\activate neuralnets

-- INSTALL EVERYTHING (notice the neuralnets workspace in parenthesis on each line). ACCEPT ANY DEPENDENCIES EACH OF THOSE STEPS WANTS TO INSTALL:

1. (neuralnets) C:\conda install theano
2. (neuralnets) C:\conda install mingw libpython
3. (neuralnets) C:\pip install tensorflow
4. (neuralnets) C:\pip install keras

-- TEST IT OUT:

(neuralnets) C:\python -c "from keras import backend; print(backend._BACKEND)"

---

Just remember, if you want to work in the workspace you always have to do:

C:\activate neuralnets

so you can launch Jypiter for example (assuming you also have jypiter installed in this environment/workspace) as:

C:\activate neuralnets
(neuralnets) jypiter notebook

You can read more about managing and creating conda environments/workspaces at the follwing URL: https://conda.io/docs/using/envs.html