Why Tuples Are Immutable: Nesting and Iteration

If a tuple can never be changed, how is `t = (something else)` not an error — and what quietly happens to the original tuple?

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

Rebuild, don't mutate

You start with the given t = (2, 'mit', 3). You've decided the middle element should be the integer 3 instead of the string 'mit'. Tuples are immutable, so you can't overwrite t[1].

Build a brand-new tuple that keeps the first and last elements but has 3 in the middle, and assign it to rebuilt.

# Tuples can't be edited in place — build a corrected NEW tuple.
t = (2, 'mit', 3)
rebuilt = ...  # your code here — assign your answer to this variable

# Tuples can't be edited in place — build a corrected NEW tuple.
t = (2, 'mit', 3)
rebuilt = ...  # your code here — assign your answer to this variable

Python runs in your browser

⌘/Ctrl + Enter runs

is a tuple

keeps the outer elements and replaces the middle one

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