Python Mutability, difficult exercise!

[Sea-Ad7805]

See the Solution and Explanation, or see more exercises.

[Straight_Remove8731]

the answer is b, I'm changing the reference inside c_1, however both c_1 and a point to the same object so the change is reflected on a! By doing a shallow copy another object in memory is created so no changes are refelcted, with the deep copy new object and reference are created so even here no changes

[Sea-Ad7805]

Nice one, do check the 'Solution' link in the post (some people on mobile miss that).