r/PythonLearning • u/Sea-Ad7805 • Oct 08 '26

Python Mutability and Local Variables

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An exercise to help build the right mental model for Python data.

The “Solution” link uses memory_graph to visualize execution and reveals what’s actually happening.

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u/thw31416 Oct 10 '26

List and Sets are mutable, Strings and Tuples are immutable. += and |= are operators that try to change the original object. In that regard they are different from =, which overrides a variable with a new object. D is correct.

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u/Sea-Ad7805 Oct 10 '26

Nice one, do check the Solution link for visualization of correct answer.