i. Statement: In Python, a tuple is mutable (can be changed after creation).

Question

BlackTom AI · Accepted Answer

Tuples in Python are immutable, meaning once a tuple object is created its sequence of references cannot be changed.

1. Relevant knowledge points and concepts
- Immutable vs mutable: mutable objects (like lists, dicts, sets) can be changed in place; immutable objects (like tuples, strings, integers) cannot have their contents reassigned.
- Tuple behavior: you cannot assign to an index of a tuple (t[0] = ... raises TypeError). Operations that look like “changing” a tuple (concatenation, slicing) produce a new tuple object.
- Distinction: immutability applies to the tuple container, not necessarily to mutable objects stored inside a tuple.

2. Step-by-step reasoning process
- Start with a tuple: t = (1, 2, 3)
- Attempt in-place modification: t[0] = 10 → Python checks whether the tuple supports item assignment; tuples do not, so it raises TypeError.
- Alternative operations: t2 = t + (4,) creates a new tuple; t remains unchanged.
- If a tuple contains a mutable item: t3 = (1, [2, 3]); modifying the list t3[1][0] = 9 changes the list object, but the tuple’s references did not change — only the internal state of the list changed.

3. Example (showing intermediate steps)
- t = (1, 2, 3)
- Attempt: t[0] = 10 → TypeError: 'tuple' object does not support item assignment
- Concatenate: t = t + (4,) → creates new tuple (1, 2, 3, 4)

4. Why the correct answer is correct
- The statement “In Python, a tuple is mutable” contradicts the language definition: tuples do not allow item assignment or in-place resizing. Therefore the statement is false.

5. Why the other option is incorrect
- Choosing “True” would assert tuples are mutable; that is incorrect because element assignment and in-place modification of the tuple container are not permitted. The only changes involve creating new tuple objects or mutating mutable objects contained inside the tuple (which is not the same as making the tuple itself mutable).

6. Conclusion
- The correct choice is False. This matches the provided answer: False.

i. Statement: In Python, a tuple is mutable (can be changed after creation).True/False

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