class_docstr: Structure representes neuron in the Neural Gas algorithm.
  
  Attributes
  ----------
  weight : 2d-array
      Neuron's position in the space.
  
  error : float
      Error accumulated during the training.
code: def __init__(self, weight):
      self.weight = weight
      self.error = 0
  
imports: from operator import attrgetter
  import numpy
  from neupy.utils import format_data
  from neupy.exceptions import StopTraining
  from neupy.algorithms.base import BaseNetwork
  from neupy.core.properties import NumberProperty, ProperFractionProperty, IntProperty
label_desc: Use image node_id 1 to create a new NeuronNode object from inherited base classes: object with example: obj = NeuronNode(weight)