Add immutable key to sorted_variables

[Eduardo-Atae]

No description provided.

[mateacademy-ai-mentor]

Review Summary

I am approving your solution because it correctly implements the required sorted_variables dictionary with exactly the two keys "mutable" and "immutable", and all eight module-level variables are grouped by their mutability as specified. The mutable types (like list, dict, set) are placed in the "mutable" list, and the immutable types (such as int, float, bool, str, tuple) are placed in the "immutable" list, using the variables themselves rather than their names or copies, which fulfills the core functional requirements. There are no functional issues or blockers: the code is concise, clear, and matches Python’s mutability semantics, so it satisfies the task’s checklist items about behavior and structure.

The only remaining point is the external guideline reading confirmation ([CHECKLIST ITEM #5]); while it cannot be verified from your code alone, this is not a functional blocker for this task. As a small improvement, you could add a short comment above sorted_variables such as # Implemented per project mutability guideline (read and applied) to give future reviewers explicit confirmation. You might also consider adding a brief unit test or simple assertions to protect this grouping from accidental changes later, but that’s optional. Overall, you met the requirements well—nice work on keeping the implementation both correct and straightforward.

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