Top Python Interview Questions and Answers (2025 Guide)
Python continues to dominate the programming world due to its simplicity, versatility, and demand across industries. Whether you’re preparing for a Python developer interview or brushing up on your coding skills, being ready for the right questions is essential.
In this blog, we’ll explore some of the most commonly asked Python interview questions with answers to help you succeed.
Why Python Interview Preparation is Important?
- Py1thon is used in web development, data science, machine learning, automation, and AI.
- Companies expect candidates to have hands-on coding skills and a strong grasp of Python concepts.
- Preparing with real interview questions increases your chances of cracking technical rounds.
Top Python Interview Questions and Answers
What are Python’s key features?
Python is:
- Easy to learn and read (highly readable syntax).
- Dynamically typed and interpreted.
- Object-oriented and supports functional programming.
- Rich in libraries (NumPy, Pandas, TensorFlow, Django).
2. What is PEP 8 and why is it important?
PEP 8 is Python’s style guide that improves readability and consistency in code. Following PEP 8 ensures your code is clean and professional.
3. What is the difference between list, tuple, and set?
- List – Mutable, allows duplicates, ordered.
- Tuple – Immutable, allows duplicates, ordered.
- Set – Mutable, does not allow duplicates, unordered.
4. How does Python handle memory management?
Python uses automatic garbage collection and a private heap space. The memory manager handles object allocation and deallocation.
5. What are Python decorators?
Decorators are functions that modify the behaviour of another function without changing its code. They are often used for logging, authentication, or performance measurement.
6. Explain Python’s Global Interpreter Lock (GIL).
The GIL is a mutex that allows only one thread to execute at a time in CPython. It can limit multi-threaded performance but ensures thread safety.
7. What are Python’s data types?
- Numbers (int, float, complex)
- String
- List, Tuple, Set, Dictionary
- Boolean
- NoneType
8. How is exception handling done in Python?
Python uses try, except, else, and finally blocks for exception handling. Example:
try:
num = 10 / 0
except ZeroDivisionError:
print("Cannot divide by zero!")
finally:
print("Execution completed")
9. What is the difference between deep copy and shallow copy?
- Shallow Copy – Creates a new object but references the same elements (changes reflect).
- Deep Copy – Creates a new object with independent copies of elements.
10. What are Python’s popular frameworks?
- Web Development: Django, Flask, FastAPI
- Data Science: Pandas, NumPy, Scikit-learn
- AI/ML: TensorFlow, PyTorch
- Automation: Selenium
Tips to Crack Python Interviews
- Practise coding problems on platforms like LeetCode, HackerRank, and CodeSignal.
- Revise OOP concepts in Python (Inheritance, Polymorphism, Encapsulation).
- Learn real-world applications like file handling, APIs, and databases.
- Be ready to write clean, optimised code.
Final Thoughts
Preparing for Python interview questions is not just about memorising answers—it’s about understanding concepts and applying them in real scenarios. Master the fundamentals, practise coding, and stay confident.
👉 Whether you are a fresher or an experienced professional, Python skills are your gateway to exciting career opportunities in software development, data science, and AI.
