__init__ method behavior in Python - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of the __init__ method in a Python class?

The <code>__init__</code> method initializes a new object when a class is instantiated. It sets up initial values for the object's attributes.

beginner

When is the __init__ method called?

It is called automatically right after a new object is created from a class, without needing to call it explicitly.

beginner

Can the __init__ method take parameters? If yes, why?

Yes, it can take parameters to allow setting different initial values for each new object created from the class.

intermediate

What happens if a class does not have an <code>__init__</code> method?

Python uses a default __init__ method that does nothing, so the object is created but no attributes are set automatically.

beginner

How do you access the object being created inside the __init__ method?

You use the self parameter, which refers to the new object itself, allowing you to set or access its attributes.

What does the __init__ method do in a Python class?

A Runs only when the program ends

B Initializes a new object when the class is instantiated

C Deletes an object

D Creates a new class

The __init__ method sets up the new object right after it is created.

Which keyword is used inside __init__ to refer to the current object?

A self

B this

C obj

D current

In Python, self refers to the current object inside class methods.

If you do not define an __init__ method, what happens when you create an object?

A The program crashes

B Python raises an error

C The object is created with default initialization

D The object is not created

Python provides a default __init__ that does nothing, so the object is created without custom setup.

Can __init__ accept arguments besides self?

A No, only <code>self</code> is allowed

B Only if the method is static

C Only if the class inherits another

D Yes, to set initial attribute values

__init__ can take extra arguments to customize the new object's attributes.

When exactly is the __init__ method called?

A Right after an object is created from the class

B When the program starts

C When the object is deleted

D Before the class is defined

__init__ runs immediately after a new object is created to initialize it.

Explain in your own words what the __init__ method does in a Python class.

Think about what happens when you create a new object.

Describe how you would use parameters in the __init__ method and why they are useful.

Consider how you can give each object its own data.