Lists Mutate, Tuples Don't: The Name vs the Object

Why does `L[i] = 5` change a list in place while reassigning a tuple silently builds a brand-new object?

Finger exercises

Short drills on what this video just taught. Write the code, run the checks, and reveal the answer only if you are stuck.

0 / 5 passed

Exercise 1 of 5

Change an element in place

Lists are mutable, so you can overwrite a single element without rebuilding the whole list. The list scores holds four numbers. Change the element at index 2 to 100, in place, so the list becomes [88, 91, 100, 64]. Keep the list bound to scores.

scores = [88, 91, 77, 64]
# your code here — change the element at index 2

scores = [88, 91, 77, 64]
# your code here — change the element at index 2

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⌘/Ctrl + Enter runs

scores is still a list

index 2 was overwritten and the rest kept

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