code: def read_monitor(mon, id=False):
      """read trajectories from a monitor instance
  
      mon is a monitor instance
      id is a bool, where if True, `id` is also returned
  
      Returns tuple of (mon.x, mon.y) or (mon.x, mon.y, mon.id)
      """
      steps = mon.x[:]
      energy = mon.y[:]
      if not id:
          return steps, energy
      id = mon.id[:]
      return steps, energy, id
  
imports: from mystic.tools import list_or_tuple_or_ndarray
  from mystic.tools import isNull
  import sys
label_desc: Use image node_id 6 for calling a global function with example usage: read_monitor(mon, id) and returns: steps,  energy,  id, steps,  energy