I used this simple code to learn building a quick CNN with keras.

I use Anaconda with Pycharm (MacOS), so it's really easy to install all the needed packages. But you can use virtualenv and pip too.

Pycharm > Preferences > Project Interpreter > Add Local > Conda Environment > New Environment

Select the location of your new Anaconda environment. In my case:

/Users/moritzkremb/anaconda3/envs/convnet_keras

Select Python version 2.7 -> Ok

Now add the following packages:

• numpy - v1.12.1
• scipy - v0.19.1
• theano - v1.0.1
• mkl
• keras

For this project we are using Keras with Theano backend (default is tensorflow). So we have to change the setting in the keras.json file. Open Terminal and type:

nano ~/.keras/keras.json

Now change the backend to "theano".

You're all set!