code: def load_contamination_ngrams(self, filename):
      with open(filename, "rb") as fp:
          self.dirt_ngrams = pickle.load(fp)
  
imports: import re
  import string
  import timeit
  import pickle
  import traceback
  from pprint import pprint
label_desc: Use image node_id 3 for calling the Janitor obj's underlying member method code with example usage: obj.load_contamination_ngrams(filename) without return types