At the beginning of doing the programming assignment, I feel like I can not handle the programming assignment by myself because there are lots of Python function that is first time to use and i don't understand how to use. So, I decide to study how to use those function and i finally take the first step to write the program. But in the middle of writing the program, I find  that my program is long and  some of the function are useless, so I decided to change my program to a simply and easy to understand. In the final part of the programming assignment, the error checking and testing. I feel like I'm finally finish this assignment. By doing this assignment, I have find that I still have many shortcomings, I still have a long way to go and after doing the programming assignment. I will study Python hard and try to master the Python.