#73 - Data Science interview questions

This website offers a great way to keep continuously practicing on key topics related to data science, such as Python, statistics and SQL. The user can subscribe to their mailing list and receive for free 3 interview questions per week. There's also a paid version with additional benefits. 

Here's an example of the code I wrote to reply one of the questions about Python. 

Even on the simple examples, it is always possible to increase the complexity by trying different methods to solve the question, using another text editor such as VIM, applying techniques from test driven development (TDD), unit testing, etc.