code: def get_max_len(strokes):
      """Return the maximum length of an array of strokes."""
      max_len = 0
      for stroke in strokes:
          ml = len(stroke)
          if ml > max_len:
              max_len = ml
      return max_len
  
imports: import random
  import numpy
label_desc: Use image node_id 11 for calling a global function with example usage: get_max_len(strokes) and returns: max_len