WEEK 3: Object-Oriented Programming

   Object-Oriented Programming (OOP) is basically how Python works. This organizes a program by creating an object, because objects contain both data and functionality. The main key idea of this programming type is using classes, which create a new type and an instance of a class, object. Objects can store data using a variable belong to the object and also can have a functionality using functions (methods) within a class. A class contains methods such as an initializer, a string method, and a represent method etc. The structure of this programming is that many methods contain variables are within a class. This type of a structure makes a complex function to be easier to read and to trace back the code the user typed. As well as it helps to define an error easier.

   I learnt writing classes in CSC108 so I was familiar with the concept of classes and importing a class into another class except the way of writing the function. In the first lecture, the example the professor showed made me confused because the type contract for a function was written in the parameter. I have never seen those kinds of examples in CSC108 course, so I was wondered if it works or not. I tried to write a random class and methods as the examples to see if it works and liked the shorter way to write a function. As well as I found a new code fragment that I have never seen, which is isinstance(). I looked up the use of isinstance(), and found out it checks if a given object is an instance of a class. Now I am familiar with new style of writing a function and a new code. So far I am okay with examples, but if I am confused or cannot figure out something, I might just look up and figure out the way it works.