I followed them from the course at udemy , the certificate of which is https://drive.google.com/open?id=1iGGqHQubzM6QTLLy7LixAVfQXoiwjQWr
About the scripts ,
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the craigslist.py is a simple manipulation of the beautiful soup an requests module of python
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codingbat.py is also based totally on beautiful soup and requests , a little complex than craigslist.py
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instagram.py is a webscraper made using beautiful soup , and selenium used to scrape images from Instagram.
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Codeforces.ipnyb is based on the API of codeforces , and is used to find the number of users in India who is a red coder(above a certain rating in codeforces) and print them along with their handles.This is a small personal project not associated with the course.