code: def memoize(obj):
      cache = obj.cache = {}
  
      @functools.wraps(obj)
      def memoizer(*args, **kwargs):
          key = str(args) + str(kwargs)
          if key not in cache:
              cache[key] = obj(*args, **kwargs)
          return cache[key]
  
      return memoizer
  
imports: import functools
  import sys
  import numpy
  import copy
  from scipy.interpolate import PchipInterpolator
  import seaborn
  import itertools
  import pandas
  from matplotlib.lines import Line2D
label_desc: Use image node_id 13 for calling a global function with example usage: memoize(obj) and returns: memoizer, cache