At 1, i defined a class and named it as Introduction (keep first letter in capitals).

At 2, i defined a method by def and the method name is __init__(), having 3 parameters self, age, name

At 3, i mentioned attributes by using self.(anything you like to print) = the same parameter,

in this case our attributes are name and age

At 4, i defined another method describe(), which will take care in what manner the output will be printed.

At 5, i gave the print command which basically gives us the output when describe method is called via instance.

At 6, i used str() function (use to define strings) with age.self, as python will only take strings not integers.

At 7, i mentioned an instance 'intro' which is use to call the class Introduction,

also the values of parameters (name, age) are defined here (that is 'yash', 23)

At 8, i used the instance (intro) and method (describe) together in order to get the output that particulat method only

The __init__() method at is a special method that Python runs automatically whenever

we create a new instance based on the Dog class.

This method has two leading underscores and two trail-ing underscores,