Solution

[difuz1x]

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[mateacademy-ai-mentor]

Review Summary

I am requesting changes because a core requirement of the task is not yet satisfied: sorted_variables is defined but its "mutable" and "immutable" lists remain empty, so none of the 8 module-level variables are actually categorized by mutability as required [CHECKLIST ITEM #1–#3]. In app/main.py, near the sorted_variables declaration, you should either directly assign all variables into the two lists (e.g. "mutable": [my_favourite_films, marks, collection_of_coins] and "immutable": [lucky_number, pi, one_is_a_prime_number, name, profile_info]) or call your check_mutability helper for each variable to populate the dict programmatically. Currently, check_mutability is never called, and its signature indicates dict | None but it does not return anything explicitly, which makes its behavior misleading; consider either returning the updated dict or changing the annotation to reflect that it mutates in place. There is also a linting blocker: on app/main.py:30, the parameter obj in check_mutability is missing a type annotation (ANN001), so add an appropriate type, for example def check_mutability(obj: object, sorted_dict: dict[str, list[object]]) -> dict[str, list[object]]: (or a more precise type if you prefer). Once you populate sorted_variables with all 8 variables and fix the type annotation issue, your solution should meet the functional expectations and pass the automated checks. You did a good job defining the variables and the IMMUTABLE_TYPES/MUTABLE_TYPES tuples, so you are close—focus on wiring up the helper (or direct assignment) and tightening the type hints to complete the task.

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[mateacademy-ai-mentor]

The sorted_variables dictionary is created here but both lists are empty. Per checklist items #1–#3 you must place all 8 module variables into these lists, grouped by mutability. For this module those groupings should be roughly:

• mutable: my_favourite_films, marks, collection_of_coins
• immutable: lucky_number, pi, one_is_a_prime_number, name, profile_info
  You can either assign these lists directly or populate them programmatically.

[mateacademy-ai-mentor]

check_mutability appends objects to sorted_dict but is never called from this module, so sorted_variables remains empty. Also the function signature indicates a return type dict | None but there is no explicit return (it implicitly returns None). Either call this function for each variable (and/or have it return the dict) or remove it and populate sorted_variables directly.

[mateacademy-ai-mentor]

IMMUTABLE_TYPES and MUTABLE_TYPES are defined and look appropriate for this task. Note (for awareness): bool is a subclass of int, but since bool is explicitly included in IMMUTABLE_TYPES this classification will work as intended.

[mateacademy-ai-mentor]

Review Summary

Your solution meets the functional requirements for this task: all eight module-level variables are defined, correctly categorized as mutable or immutable, and programmatically sorted into the sorted_variables dictionary using check_mutability as required. The helper function is properly annotated to return None and it mutates the sorted_variables structure in place, so it aligns with the expected behavior [CHECKLIST ITEM #6, #7]. There are no critical issues that would block correctness or test passing, so no changes are required for completion. As a minor improvement, you could make the sorted_dict parameter type more specific (for example, dict[str, list[object]]) to improve readability and static analysis. Another small refinement is to remove the print(sorted_variables) at the bottom of the file or guard it with if __name__ == "__main__": so importing the module doesn’t produce side-effect output. Overall, this is a solid implementation—nice work applying the mutability concepts and cleanly organizing the classification logic.

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