Top 30 Python Interview Questions & Answers for Freshers – 2025

Python is one of the most popular programming languages, known for its readability and versatility. If you're a fresher preparing for a Python interview, here are the top 30 questions and answers to help you get ready. These include technical, behavioral, and coding-based questions aligned with 2025 standards.

Basic Python Questions

• 1. What is Python?
  Python is a high-level, interpreted, and general-purpose programming language known for its simple syntax and readability.
• 2. What are Python's key features?
  - Interpreted
  - Dynamically typed
  - High-level language
  - Extensive libraries
  - Object-oriented
• 3. What are Python's data types?
  - int
  - float
  - str
  - list
  - tuple
  - dict
  - set
• 4. What is PEP 8?
  PEP 8 is Python’s style guide for writing clean, readable code.
• 5. How is memory managed in Python?
  Python uses automatic memory management and a built-in garbage collector.

Coding Examples

• 6. Write a program to check if a number is even or odd.
  

  
  num = int(input("Enter a number: "))
  if num % 2 == 0:
      print("Even")
  else:
      print("Odd")
        

• 7. Write a function to return the factorial of a number.
  

  
  def factorial(n):
      return 1 if n == 0 else n * factorial(n - 1)
  
  print(factorial(5))
        

• 8. Write a program to reverse a string.
  

  
  text = "hello"
  print(text[::-1])
        

• 9. How do you swap two variables?
  

  
  a, b = 5, 10
  a, b = b, a
  print(a, b)
        

• 10. Write a Python program to print Fibonacci series.
  

  
  def fibonacci(n):
      a, b = 0, 1
      for _ in range(n):
          print(a, end=' ')
          a, b = b, a + b
  
  fibonacci(5)
        

OOP and Advanced Concepts

• 11. What is OOP?
  Object-Oriented Programming involves organizing code using objects and classes.
• 12. Explain the four pillars of OOP.
  - Encapsulation
  - Abstraction
  - Inheritance
  - Polymorphism
• 13. What is a class and an object?
  A class is a blueprint; an object is an instance of a class.
• 14. What is __init__() in Python?
  It’s a constructor method called when an object is created.
• 15. What is inheritance?
  A mechanism by which one class can inherit properties and methods from another.

List & Dictionary Based Questions

• 16. How do you append an element to a list?
  my_list.append(10)
• 17. How do you remove an item from a list?
  my_list.remove(10)
• 18. How do you merge two lists?
  list3 = list1 + list2
• 19. How do you iterate through a dictionary?
  

  
  for key, value in my_dict.items():
      print(key, value)
        

• 20. How do you check if a key exists in a dictionary?
  if 'key' in my_dict:

Behavioral & Conceptual Questions

• 21. Why did you choose Python?
  Because of its simplicity, large community, and vast library support.
• 22. How do you debug your code?
  Using print statements, IDE debuggers, and the Python pdb module.
• 23. What are Python libraries you’ve used?
  NumPy, Pandas, Matplotlib, Requests, Flask, Django.
• 24. What’s your approach to learning new Python frameworks?
  Read documentation, build small projects, and follow tutorials.
• 25. How do you handle errors in Python?
  Using try-except blocks for exception handling.

Miscellaneous & Concept Questions

• 26. What is the difference between list and tuple?
  Lists are mutable, tuples are immutable.
• 27. What is a lambda function?
  An anonymous function: lambda x: x + 1
• 28. What is the use of 'with' statement?
  To manage resources like file opening/closing.
  

  
  with open('file.txt') as f:
      content = f.read()
        

• 29. What is the difference between is and ==?
  is checks identity; == checks value equality.
• 30. What are Python's scopes?
  LEGB: Local, Enclosing, Global, Built-in.