REST APIs with Flask and Python - Mutability in Python

The video tutorial explains the concept of mutability in Python, highlighting how it affects programming. It clarifies the difference between names and references, emphasizing that variables are names for objects. The tutorial discusses mutable and immutable types, providing examples like lists, tuples, and integers. It explains that lists are mutable, meaning they can be changed, while tuples and integers are immutable. The video also covers Python's optimization for integers and the implications of immutability for strings and other types. The tutorial concludes with a summary of key points.

What is the relationship between names and values in Python?

• Names and values are interchangeable.

• Values are references to names.

• Names are references to values.

• Names are the same as values.

What happens when you append an item to a list referenced by two names?

• Only the second name reflects the change.

• Neither name reflects the change.

• Only the first name reflects the change.

• Both names reflect the change.

Why are integers considered immutable in Python?

• They can be changed after creation.

• They are stored in a mutable format.

• They cannot be changed once created.

• They are always stored in a new memory location.

Which of the following is NOT an immutable type in Python?

• Integer

• String

• List

• Tuple

How can you create an immutable class in Python?

• By using mutable data types within the class.

• By not adding any methods that change object properties.

• By adding methods to change object properties.

• By allowing changes to the class attributes.

What happens when you reassign a string in Python?

• The original string is modified.

• A new string is created and assigned.

• The original string is deleted.

• The original string is unchanged and the name is reassigned.

Which of the following statements about mutability is true?

• Mutability is not a concept in Python.

• All Python objects are mutable.

• Most Python objects are mutable, except for a few like strings and tuples.

• Only lists and dictionaries are mutable.