Swati Saxena

Ans.Python has no inbuilt main function to start the execution of the program. Python has special variable __name__; it provides the functionality of the main function.

The __del__() method is known as a destructor method in Python. It is called when all references to the object have been deleted.

Pillars of OOPs:
Abstraction: To hide complexity and show which is necessary to a current problem scenario.
Encapsulation: Combine data of the similar type of objects into a single unit.

Polymorphism: Many forms of a single object.
Polymorphism is of two types:
Early binding: Example - Overloading
Late Binding: Example - Overriding
Inheritance: Use for code reusability, where child (sub) class can use properties of the parent (base) class.

The Python os module is used. The OS module in Python provides functions for interacting with the operating system. OS comes under Python’s standard utility modules.