Write program in python that scrapes the text of all Python exercises on codingbat

Write program in python that scrapes the text of all Python exercises on codingbat.com. The program should start at https://codingbat.com/python, identify the links for all exercise categories (e.g. Warmup-1, String-1, etc.) and follow these links. On the page of every category, it should then identify and follow the links to the exercises (e.g. string_times, front_times), and scrape the text for every exercise. Finally, it should store the text of all exercises in a single csv file called codingbat.csv.