Top 25 Python Interview Questions

Python remains one of the most in-demand programming languages in the tech industry. If you're preparing for software development, data engineering, AI, or automation roles, these Python interview questions can help you get started.

1. What is Python?

Python is a high-level, interpreted, object-oriented programming language known for its simplicity and readability.

2. What are the key features of Python?

• Easy to learn

• Interpreted language

• Object-oriented

• Cross-platform

• Large standard library

• Open source

3. What is the difference between a List and a Tuple?

List	Tuple
Mutable	Immutable
Uses []	Uses ()
Slower	Faster

4. What are Python Data Types?

• int

• float

• str

• bool

• list

• tuple

• dict

• set

5. What is a Dictionary?

A dictionary stores data as key-value pairs.

student = {
    "name": "Pooja",
    "age": 23
}

6. What is the difference between == and is?

• == compares values.

• is compares memory locations.

7. What is a Python Function?

A reusable block of code that performs a specific task.

def greet():
    print("Hello")

8. What are *args and **kwargs?

• *args accepts multiple positional arguments.

• **kwargs accepts multiple keyword arguments.

9. What is a Lambda Function?

square = lambda x: x*x

A small anonymous function.

10. What is List Comprehension?

numbers = [x*x for x in range(5)]

A concise way to create lists.

11. What is Exception Handling?

try:
    print(10/0)
except ZeroDivisionError:
    print("Error")

Used to handle runtime errors.

12. What are Python Modules?

Files containing Python code that can be imported and reused.

13. What is a Package?

A collection of Python modules.

14. What is PEP 8?

PEP 8 is Python's official style guide for writing clean and readable code.

15. What is OOP in Python?

Object-Oriented Programming is based on:

• Class

• Object

• Inheritance

• Polymorphism

• Encapsulation

• Abstraction

16. What is a Class?

class Student:
    pass

A blueprint for creating objects.

17. What is an Object?

s = Student()

An instance of a class.

18. What is Inheritance?

A child class can inherit properties and methods from a parent class.

19. What is Polymorphism?

The same method behaves differently for different objects.

20. What is Encapsulation?

Bundling data and methods together while restricting direct access.

21. What is Abstraction?

Hiding implementation details and showing only essential features.

22. What are Sets?

An unordered collection of unique values.

s = {1,2,3}

23. What is the Difference Between remove() and pop()?

• remove() removes a specific value.

• pop() removes an element by index.

24. What is the Difference Between Deep Copy and Shallow Copy?

• Shallow Copy copies references.

• Deep Copy creates independent copies.

25. Why is Python Popular in AI and Data Science?

• Simple syntax

• Rich libraries

• Large community

• Libraries like NumPy, Pandas, TensorFlow, PyTorch, Scikit-learn

Final Tip

For fresher interviews, focus on:

• Variables & Data Types

• Lists, Tuples, Dictionaries

• Functions

• OOP Concepts

• Exception Handling

• File Handling

• Basic SQL + Python

These topics alone cover most entry-level Python interviews.