pyNeural is a simple set of classes for generating ANNs (Artificial Neural Networks) easily. It isn't done yet. If you have any suggestions, feel free to become a contributor.
##pyNeural versions:
pyNeural for Python 2.7 provides a Neuron class with the main Transfer Functions step, sign, linear and sigmoid, a brief documentation and an example file.
pyNeural for Python 3.4 also provides a Neuron class with the main Transfer Functions step, sign, linear and sigmoid. So, what's the new? This version contains the new network class: Backpropagation Net.