To complete the recipes in this chapter, you will need the following files (available on GitHub):
- tokenizer.py
 - stemmer.py
 - lemmatizer.py
 - chunking.py
 - bag_of_words.py
 - tfidf.py
 - gender_identification.py
 - sentiment_analysis.py
 - topic_modeling.py
 - data_topic_modeling.txt
 - PosTagging.py
 - GensimWord2Vec.py
 - LogiTextClassifier.py
 - spam.csv