code: def seq_id():
      """Generate a short sequential id for layoutbox objects."""
      return "%06d" % next(_layoutboxobjnum)
  
imports: import itertools
  import kiwisolver
  import logging
  import numpy
  import matplotlib
  import matplotlib.patches
  from matplotlib.transforms import Bbox
label_desc: Use image node_id 1 for calling a global function with example usage: seq_id() and returns: unknown