def __init__(self,neuron_count_list = [1,1,1]):
self.layer_list = []
for i in xrange(1,len(neuron_count_list)):
#new layer with input count determined by the prev layer neuron count
new_layer = Layer(neuron_count_list[i-1])
for j in xrange(neuron_count_list[i]):
new_layer.add_neuron(weights=None,bias=None)
self.layer_list.append(new_layer)
