GOOD START!

The Object-Oriented Programming is the sort of concept associated with Data field. Python is this kind of Programming language. Today, the Object-Oriented programming Languages are used widely around the world,because it has an excellent ability to process large amount of Data, and that's the reason it is useful for computer scientists. Based on the learning of Python, I get to know the importance of computer that working with Data.  In the real world, many place need Computer programming , such as statistic ,math, so on

Recursion, one of the important strategies in the programming, the magic of the recursion is by calling the function itself to achieve "repeat". In the reality, computer scientists could use it to do many jobs efficiently.
Initially, study the recursion is a really hard job,  but if we can pay attention to visualize each step by step, and understand how it works, then recursion would become a helper in your programming career.
After first assignment, i got a generally understand of recursion.KEEP working on this.