Extract node locations from discretized fibers based on first spike location in NEURON titration results

[cbenj33]

I'd like to be able to find the actual location of a node section from within a discretized fiber, that way I could calculate distances from the location of first spike to the location of stimulation. Does anyone know how to do this with Python? Is there some attribute of discretized nerve entity that contains what nodes are contained and their locations within the model? Alternatively, could you extract or convert sensors locations into points?