A proper introduction
We love to make references to the real world when we teach coding; we believe they help people to better retain the concepts. However, now is the time to be a bit more rigorous and see what coding is from a more technical perspective.
When we write code, we are instructing a computer about the things it has to do. Where does the action happen? In many places: the computer memory, hard drives, network cables, the CPU, and so on. It's a whole world, which most of the time is the representation of a subset of the real world.
If you write a piece of software that allows people to buy clothes online, you will have to represent real people, real clothes, real brands, sizes, and so on and so forth, within the boundaries of a program.
In order to do so, you will need to create and handle objects in the program being written. A person can be an object. A car is an object. A pair of trousers is an object. Luckily, Python understands objects very well.
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