Add sorted_variables for mutable and immutable collections

[OldiLo]

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[mateacademy-ai-mentor]

Review Summary

I am requesting changes because one of the tests is still failing due to a leftover template comment, even though your sorted_variables implementation itself is correct. In app/main.py, on the first line you still have the comment # write your code here, and the test test_removed_comment explicitly checks that this starter comment has been removed from the file. This violates the task requirement that the original placeholder comment must not appear in the final solution, so it is considered a blocking issue. To fix this, delete that entire line and make sure the exact phrase # write your code here does not appear anywhere else in app/main.py (including in comments or docstrings). After removing it, run pytest again to confirm that all tests pass. Aside from this comment-removal requirement, your grouping of variables into the "mutable" and "immutable" lists is correct, so once you clean up the placeholder comment your solution should be fully acceptable.

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[mateacademy-ai-mentor]

Review Summary

Your solution is approved because it correctly defines the sorted_variables dictionary in app/main.py with exactly the two required keys: "mutable" and "immutable". The lists under each key properly group the existing eight variables by mutability, placing the list, dictionary, and set in "mutable", and the booleans, string, numbers, and tuple in "immutable", which matches the task requirements. You also used the originally defined variables directly rather than recreating values, which is an important part of the specification. The starter placeholder comment has been removed, and there are no functional or structural issues that would block task completion. As a minor optional improvement, you could add a short comment explaining why each type is considered mutable or immutable to reinforce the concept for future readers, but this is not required for correctness.

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