Python Interview Quick Revision (2025) ⏱️

🎬 Python Interview Q&A – Advanced (Q1–Q10) (part-1)

Q1. What is GIL in Python?
✅ Global Interpreter Lock, allows only one thread at a time.

Q2. Difference between multithreading and multiprocessing?
✅ Threads = same memory, Processes = separate memory.

Q3. What is asynchronous programming in Python?
✅ Concurrency using async and await.

Q4. What are Python metaclasses?
✅ Classes that create other classes.

Q5. What is reflection in Python?
✅ Inspect objects at runtime using inspect.

Q6. What is duck typing?
✅ “If it walks like a duck, it’s a duck” – type determined by behaviour.

Q7. What are Python descriptors?
✅ Objects that manage attribute access with __get__, __set__.

Q8. What is the difference between deep copy and deepcopy in NumPy/Pandas?
✅ deepcopy duplicates data, normal copy shares references.

Q9. What are Python coroutines?
✅ Functions that can pause/resume using yield or async.

Q10. What are Python context managers?
✅ Classes with __enter__ and __exit__ methods.

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