Mutable

Definition

Mutable objects can be changed after they are created. This allows for modifications such as adding, removing, or altering data.

5 Must Know Facts For Your Next Test

1. Lists and dictionaries in Python are examples of mutable types.
2. Mutable objects can have their contents altered without changing their memory address.
3. Using mutable default arguments in functions can lead to unexpected behavior.
4. Tuples are immutable, whereas lists are mutable.
5. Understanding mutability is crucial for managing state and side effects in programs.

Review Questions

• What is a mutable object in Python?
• Why should you be cautious when using mutable default arguments in functions?
• Can the contents of a tuple be modified after it is created?

Related terms

Immutable: Objects that cannot be changed once they are created. Examples include tuples and strings.

List: A mutable sequence type that allows for the storage of an ordered collection of items.

Dictionary: A mutable mapping type that stores key-value pairs.