Objects

So far we have been doing procedural programming, i.e., programming
with procedures/functions.

Python supports objects too.  So, we will taste a little bit of
object-oriented programming, i.e., programming with objects, but not
much.  I will try to give you a flavor of object-oriented
programming in Python so that you will be familiar with the
notations that you may run into later.  A detailed coverage on
objects in Python is beyond the scope of this tutorial.  So, let's
see a little bit


We have seen most of the built-in types, i.e., the types that come with
the base language Python.  There were two kinds:

    1. atomic data types

    2. built-in compound data types

We can even create types that we as a programmer can define ourselves,
which are usually compound:

    3. user-defined compound data types

       Here, by 'user' we mean a Python programmer.


In Python, we create a new user-defined type by creating a new
'class'.  (That is one of the ways at least.)

Once we create a class, we can create instances (also known as
objects) of that type (class).

For example, if we create a class named Point, we can create point
instances (objects) such as p1, p2, p3, etc.

See points.py for details.