Interesting tutorials about how to build the web crawler by Python

www.youtube.com/creeveshft
I found an impressive video list recently. It gives you lectures about how to build programs through Python. Unlike to other tutorials, this tutorials are really helpful because

• It gives a lecture with an video
• Short so to be able to keep concentration
• Useful - Unlike other tutorials starting from "Hello, world", it gives you how to construct a "real" program applicable in real life.