Answer
Mutability describes whether an object’s value can change after creation. • Lists, dictionaries, and sets are mutable. • Strings, tuples, numbers, and frozensets are immutable. • A tuple can contain a mutable object even though the tuple itself is immutable.
💡 Simple Example
items = [1, 2]
items.append(3)
text = 'py'
text = text + 'thon'
print(items, text)
Output
[1, 2, 3] python
⚡ Quick Revision
Mutable objects can change in place; immutable objects require a new value.