25 Python Interview Questions for All Levels (2026)

Python Interview Questions 2026: From Basics to Advanced

Python is the #1 programming language by TIOBE Index in 2026, used extensively in data science, backend development, ML, and automation. Python interviews test: language fundamentals, data structures, OOP, concurrency, and ecosystem knowledge (Django, FastAPI, Pandas).

The 5 Python concepts interviewers love: generators (memory efficiency), decorators (metaprogramming), context managers (resource handling), comprehensions (Pythonic code), and the GIL (concurrency limitations).

Top Questions

1. Explain the GIL and its impact on multithreading
2. What is the difference between a generator and a list comprehension?
3. How does Python's garbage collection work?
4. Explain decorators and write a custom one
5. What are *args and **kwargs?
6. Explain the difference between deep copy and shallow copy
7. How do you handle memory management in Python?

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