Question
1. Describe Python modules and packages.
2. What is Jaccard distance? Show by an instance.
3. Write down a complete program that shows usage of two of the nltk library distance measures.
4. Inscribe a Python class that represents book objects. A book has title, author(s), and year published. Implement appropriate constructor, getters (methods that can get fields, as in title, author(s), and year published), and setters (methods that set each field), and a __str__() method for printing book objects. Write down code to test you Book class.