code: def sumLists(lst):
      l = []
      for item in lst:
          l.extend(item)
      return l
  
imports: from fontTools.misc.timeTools import timestampNow
  from fontTools.ttLib.tables.DefaultTable import DefaultTable
  from functools import reduce
  import operator
  import logging
label_desc: Use image node_id 9 for calling a global function with example usage: sumLists(lst) and returns: l