Still it seems like a good write up. Yes, it is not innovative, it provides a good presentation and "here's how I solved this every day, company problem." I think this has a benefit in the Data science. Yes, it glosses over the retrieving and preparing your data section, which I feel is the most work in these problems. However, it gives an idea of how to combine your knowledge and think as a new Data Scientist. So I think it is helpful to some people. As other people said there is a plethora of similar articles in other Software Engineering fields that rise consistently in the front page of Hackernews.