code: def register_nonzero_counter(network, stats):
    
    if hasattr(network, "__counter_nonzero__"):
      raise ValueError("nonzero counter was already registered for this network")
  
    if not isinstance(stats, dict):
      raise ValueError("stats must be a dictionary")
  
    network.__counter_nonzero__ = stats
    handles = []
    for name, module in network.named_modules():
      handles.append(module.register_forward_hook(_nonzero_counter_hook))
      if network != module:
        if hasattr(module, "__counter_nonzero__"):
          raise ValueError("nonzero counter was already registered for this module")
  
        child_data = dict()
        network.__counter_nonzero__[name] = child_data
        module.__counter_nonzero__ = child_data
  
    network.__counter_nonzero_handles__ = handles
docs: Register forward hooks to count the number of nonzero floating points
    values from all the tensors used by the given network during inference.
  
    :param network: The network to attach the counter
    :param stats: Dictionary holding the counter.