Can you explain "__init__" to me? Please.

Question

I don't understand "data = None" in this code:

def __init__(self, data = None, next = None):
self. data=data
self.next=next

Can you explain it to me? What does it mean? And Can you send to me example for it.

Thank you so much.

Answer 1

__init__ automatically runs when an object of a class is instantiated.
data = None just means that by default variable data has the value None.
It can be overridden by passing a value when creating the object

Answer 2

Thank you 😊 It can be overridden. I understand !