code: def left_subtract(l1, l2):
      lst = []
      for i in l1:
          if i not in l2:
              lst.append(i)
      return lst
  
imports: import pandas, numpy
  import pdb
  import nltk
  from nltk.sentiment.vader import SentimentIntensityAnalyzer
  from operator import itemgetter
  import copy
  from nltk import word_tokenize, pos_tag
  from collections import Counter
  from nltk.stem.wordnet import WordNetLemmatizer
  from sklearn.feature_extraction.text import CountVectorizer, TfidfVectorizer
  import emoji
  import string
  import string
  from nltk.tokenize import word_tokenize
  import re
  import string
  import re
  from wordcloud import WordCloud, STOPWORDS
  import matplotlib.pyplot
  from textblob import TextBlob, Word
  from itertools import chain
label_desc: Use image node_id 1 for calling a global function with example usage: left_subtract(l1, l2) and returns: lst