The file provided gives python code for scraping data from craigslist listings using Scrapy. Specifically, it searches listings for certain keywords and returns listings containing those words. The code is only for the spider. Below is a link on how to get started with Scrapy, including installation, how to create a project, and generate a spider.
https://www.accordbox.com/blog/scrapy-tutorial-series-web-scraping-using-python/