Codex - Test Scraping
"""
1. get all relative links from this web page in a list called links - https://www.oncrawl.com
2. go through links list
3. prefix "https://www.oncrawl.com" to each link
4. visit each link
5. extract text from the page
6. save the page text to a new list called pages
7. implement error handling.
8. implement unit tests
import requests
"""