Python developer interview questions and answers (India)

Python developer interview questions in India usually cover core language features, data structures, object-oriented ideas, error handling and a small coding exercise. Interviewers want to hear how you think, so explain your reasoning aloud. Practice the fundamentals in a plain editor, and be ready to discuss your own projects.

At a glance

• Know lists, tuples, sets and dictionaries cold.
• Practice writing code without autocomplete.
• Be ready to explain one project end to end.
• Say so honestly if you have not used a library.

What should you know about the role before the interview?

The official Python tutorial states that lists are mutable, tuples are immutable, a set is an unordered collection with no duplicate elements, and dictionary keys must be unique and of an immutable type (Python documentation, Data Structures, accessed 31 October 2026). Many interviews start from exactly these points.

What Python developer interview questions will you be asked?

1. "What is the difference between a list and a tuple?" Mutability and when to use each.

Sample answer: "Lists are mutable and tuples are immutable. I use a tuple for fixed records like coordinates and a list when I need to add or change items."

2. "How do sets and dictionaries differ?" Data structure fundamentals.

Sample answer: "A set stores unique items without order, good for removing duplicates and membership checks. A dictionary maps unique keys to values, and keeps insertion order."

3. "What is a list comprehension?" Idiomatic Python.

Sample answer: "It is a compact way to build a list from a loop and optional condition, for example squares = [x**2 for x in range(10) if x % 2 == 0]."

4. "What are decorators?" Functions as objects.

Sample answer: "A decorator is a function that wraps another function to add behavior, like logging or timing, without changing its code. I apply it with the @ syntax."

5. "What is the difference between a generator and a list?" Memory and laziness.

Sample answer: "A generator yields values one at a time using yield, so it does not hold everything in memory. I use it for large files or streams."

6. "How does exception handling work?" Writing safe code.

Sample answer: "I use try, except, else and finally. I catch specific exceptions, not a bare except, and use finally to release resources such as files."

7. "What is the difference between a shallow and a deep copy?" Understanding references.

Sample answer: "A shallow copy copies the outer object but shares inner objects. A deep copy duplicates everything nested, so changes do not affect the original."

*8. "Explain args and kwargs." Flexible function design.

Sample answer: "args collects extra positional arguments as a tuple, and *kwargs collects extra keyword arguments as a dictionary, useful for wrappers and flexible APIs."

9. "How would you reverse a string or find duplicates in a list?" Basic problem solving, spoken aloud.

Sample answer: "For a string, slicing with [::-1] works. For duplicates, I would loop once and track seen items in a set, which is simple and efficient."

10. "Tell me about a project you built in Python." Ownership and depth.

Sample answer: "I built a small expense tracker with a database and simple reports. I designed the tables, wrote tests for the calculations and fixed a bug caused by wrong date parsing."

How should you prepare?

Write code for ten core questions without an IDE. Revise the standard library items you have used, and read the official tutorial sections on data structures and errors. Practice explaining your best project in three minutes. For general rounds see fresher interview questions.

What should you ask the interviewer?

• What does the tech stack and codebase look like?
• How are code reviews and testing handled?
• What will I work on in my first three months?
• How does the team handle mentoring?

Frequently asked questions

Do I need data structures and algorithms? Many companies test them. Ask the recruiter which rounds to expect.

What if I forget syntax? Say what you remember, reason aloud and check the idea, then continue.

Related guides

See fresher interview questions, software developer career guide, behavioral questions and the STAR method, notice period guide.

By LiveRec Editorial. Read our editorial standards.