One int for every python object [duplicate]

Answer 1

In Python, you can just refer directly to the class attribute:

class MyObject(object):
    ID = 0

    def __init__(self):
       self.id = MyObject.ID = MyObject.ID + 1

Demo:

>>> class MyObject(object):
...     ID = 0
...     def __init__(self):
...        self.id = MyObject.ID = MyObject.ID + 1
... 
>>> MyObject().id
1
>>> MyObject().id
2
>>> MyObject().id
3
>>> MyObject.ID
3