Public attributes in Python - Cheat Sheet & Quick Revision

Recall & Review

beginner

What are public attributes in Python classes?

Public attributes are variables defined inside a class that can be accessed and modified from outside the class freely.

beginner

How do you define a public attribute in a Python class?

You define a public attribute by simply assigning a variable inside the class without any special prefix, for example: <code>self.name = 'Alice'</code>.

beginner

Can you access public attributes from outside the class? Show an example.

Yes, you can access public attributes directly. Example:<br><code>class Person:<br>    def __init__(self, name):<br>        self.name = name<br>p = Person('Bob')<br>print(p.name)  # Outputs: Bob</code>

beginner

What happens if you modify a public attribute from outside the class?

Modifying a public attribute from outside the class changes its value for that object. For example:<br><code>p.name = 'Charlie'</code> changes the name attribute to 'Charlie'.

beginner

Are public attributes safe from accidental changes?

No, public attributes can be changed accidentally or intentionally from outside the class because they have no access restrictions.

How do you access a public attribute named 'age' of an object 'person'?

A person->age

B person.age

C person.__age

D person._age

Public attributes are accessed directly by their name using dot notation, like person.age.

Which of these is a public attribute in Python?

A self.__name

B self._name

C self.name

D self.__name__

Attributes without underscores are public. Attributes starting with one or two underscores are considered protected or private by convention.

What happens if you try to change a public attribute from outside the class?

A Nothing happens.

B Python raises an error.

C The attribute becomes private.

D The attribute value changes.

Public attributes can be changed freely from outside the class.

Which of these is true about public attributes?

A They can be accessed and modified from outside the class.

B They cannot be accessed from outside the class.

C They are hidden by default.

D They require special methods to access.

Public attributes are open for access and modification from outside the class.

How do you define a public attribute inside a class constructor?

A self.attribute = value

B _attribute = value

C __attribute = value

D attribute = value

Inside a class, public attributes are defined with self.attribute = value.

Explain what public attributes are and how you use them in Python classes.

Think about variables inside a class that anyone can see and change.

Describe the difference between public attributes and private attributes in Python.

Consider how naming affects access.