AdvancePythonInterviewPrep

10. Built-in Modules (5 questions) 44. Use Counter from collections to count frequencies 45. Use defaultdict to group list of tuples by the first value 46. Use namedtuple to represent student records 47. Use itertools.combinations() to generate all 2-combinations 48. Use functools.lru_cache to optimize recursive function

11. Regex (3 questions) 49. Validate email address using regex 50. Extract hashtags from a sentence 51. Replace all numbers in a string with #

12. Comprehensions (3 questions) 52. Write a nested list comprehension to create a 2D matrix 53. Use dictionary comprehension to count vowels in a string 54. Create a set comprehension to extract unique vowels from a sentence

13. Sorting with Custom Keys (2 questions) 55. Sort a list of strings by their last character 56. Sort a list of dictionaries by a nested value

14. JSON & Serialization (2 questions) 57. Convert a Python dictionary to a JSON string and back 58. Save a list of custom objects into a JSON file

15. System/CLI Utilities (Optional — 2 questions) 59. Write a script that takes filename from command-line and prints its content 60. Read an environment variable and print its value