READ_ONLY_ACCESS
[
  {
    "id": "python-w09-000",
    "front": "Week 9 Diagnostic: Why is it recommended to use `with open('file.txt', 'r') as f:` instead of `f = open(...)`?",
    "back": "Answer: B — The `with` statement acts as a context manager that guarantees the file descriptor is closed when the block exits."
  },
  {
    "id": "python-w09-001",
    "front": "Week 9 Diagnostic: Which file open mode should be used to add data to an existing file without overwriting it?",
    "back": "Answer: C — Mode `'a'` (append) writes new data at the end of the file without clearing existing contents."
  }
]