please help me figure out why the matrices dont line up in certain cases

Question

I have a neural network that only works when I fire each neuron by my own. When I try firing it running the net automatically, despite setting identical parameters to ones I used previously, it says it can not line up the matrices.
https://code.sololearn.com/coNseV8P4d9X/?ref=app
https://code.sololearn.com/coNseV8P4d9X/?ref=app
https://code.sololearn.com/coNseV8P4d9X/?ref=app

Answer 1

I've inserted lines that print debug strings at a couple of spots:
1. print self.input in Neuron.__init__
2. print value and self.weights in Neuron.fire, just before self.activation

Immediately different between your two methods, in method 2:
The two Neuron objects sent-in-one-list are missing.
Probably due to the above, the final value and self.weights are [None] and [] respectively.

https://code.sololearn.com/c87ogSkAhFYV/?ref=app

Since I'm providing a description, I'll keep the debug code around for a little while, then delete it.

Answer 2

that.was.amazing.