✅ Top 50 Python Interview Questions

1. What are Python’s key features?
2. Difference between list, tuple, and set
3. What is PEP8? Why is it important?
4. What are Python data types?
5. Mutable vs Immutable objects
6. What is list comprehension?
7. Difference between is and ==
8. What are Python decorators?
9. Explain *args and **kwargs
10. What is a lambda function?
11. Difference between deep copy and shallow copy
12. How does Python memory management work?
13. What is a generator?
14. Difference between iterable and iterator
15. How does with statement work?
16. What is a context manager?
17. What is _init_.py used for?
18. Explain Python modules and packages
19. What is _name_ == "_main_"?
20. What are Python namespaces?
21. Explain Python’s GIL (Global Interpreter Lock)
22. Multithreading vs multiprocessing in Python
23. What are Python exceptions?
24. Difference between try-except and assert
25. How to handle file operations?
26. What is the difference between @staticmethod and @classmethod?
27. How to implement a stack or queue in Python?
28. What is duck typing in Python?
29. Explain method overloading and overriding
30. What is the difference between Python 2 and Python 3?
31. What are Python’s built-in data structures?
32. Explain the difference between sort() and sorted()
33. What is a Python dictionary and how does it work?
34. What are sets and frozensets?
35. Use of enumerate() function
36. What are Python itertools?
37. What is a Python virtual environment?
38. How do you install packages in Python?
39. What is pip?
40. How to connect Python to a database?
41. Explain regular expressions in Python
42. How does Python handle memory leaks?
43. What are Python’s built-in functions?
44. Use of map(), filter(), reduce()
45. How to handle JSON in Python?
46. What are data classes?
47. What are f-strings and how are they useful?
48. Difference between global, nonlocal, and local variables
49. Explain unit testing in Python
50. How would you debug a Python application?

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