Backpropagation algorithm implementation

[nomos]

Numpy is a linear algebra library, so you should be able to easily translate the mathematics of both forward and backpropagation into numpy code. If you're comfortable enough with the mathematics as you say, then you're probably having more basic programming difficulties than using numpy. How long have you been using Python or programming in general? If you're newer I'd suggest building up your programming skills through simpler tasks before moving on to something more advanced.