code: def cmp_to_key(mycmp):
      "Convert a cmp= function into a key= function"
  
      class K(object):
          def __init__(self, obj, *args):
              self.obj = obj
  
          def __lt__(self, other):
              return mycmp(self.obj, other.obj) < 0
  
          def __gt__(self, other):
              return mycmp(self.obj, other.obj) > 0
  
          def __eq__(self, other):
              return mycmp(self.obj, other.obj) == 0
  
          def __le__(self, other):
              return mycmp(self.obj, other.obj) <= 0
  
          def __ge__(self, other):
              return mycmp(self.obj, other.obj) >= 0
  
          def __ne__(self, other):
              return mycmp(self.obj, other.obj) != 0
  
      return K
  
imports: import sys
  from past.builtins import cmp
  import skimage.io
  import skimage.feature
  import skimage.color
  import skimage.transform
  import skimage.util
  import skimage.segmentation
  import numpy
label_desc: Use image node_id 14 for calling a global function with example usage: cmp_to_key(mycmp) and returns: K, unknown, unknown, unknown, unknown, unknown, unknown