How do you create an incremental ID in a Python Class

Question

I would like to create a unique ID for each object I created - here's the class:

class resource_cl :     def __init__(self, Name, Position, Type, Active):         self.Name = Name         self.Position = Position         self.Type = Type         self.Active = Active 

I would like to have a self.ID that auto increments everytime I create a new reference to the class, such as:

resources = [] resources.append(resource_cl('Sam Sneed', 'Programmer', 'full time', True)) 

I know I can reference resource_cl, but I'm not sure how to proceed from there...

Answer 1

Concise and elegant:

import itertools  class resource_cl():     newid = itertools.count().next     def __init__(self):         self.id = resource_cl.newid()         ... 

Answer 2

Trying the highest voted answer in python 3 you'll run into an error since .next() has been removed.

Instead you could do the following:

import itertools  class BarFoo:      id_iter = itertools.count()      def __init__(self):         # Either:         self.id = next(BarFoo.id_iter)          # Or         self.id = next(self.id_iter)         ...