Every Class in Django must have the function __init__()?

Question

I am learning Django and understand that the __init__() function is used to construct object from certain class. However,I also see some class code without a __init__() class function, so my question is that is the __init__() function really necessary for all class? And you might also correct me if there is anything wrong with my understanding of this function. Thank you.

Answer 1

Check out the documentation on Class objects

The __init__() function is called when the object is created:

>>> class MyBoringClass(object):
    def __init__(self):
        print 'Being initialised!'

>>> b = MyBoringClass()
Being initialised!

It can also accept parameters:

>>> class MyInterestingClass(object):
    def __init__(self, name):
        print 'Initialised as {}'.format(name)
        self.name = name

>>> i = MyInterestingClass('Mona')
Initialised as Mona
>>> i.name 
Mona

If you don't need it, then don't use it.

By the way, Django is a web framework written in Python - __init()__ comes from Python.