I need a Python class that keep tracks of how many times it is instantiated

Question

I need a class that works like this:

>>> a=Foo()
>>> b=Foo()
>>> c=Foo()
>>> c.i
3

Here is my try:

class Foo(object):
    i = 0
    def __init__(self):
        Foo.i += 1

It works as required, but I wonder if there is a more pythonic way to do it.

Answer 1

Nope. That's pretty good.

From The Zen of Python: "Simple is better than complex."

That works fine and is clear on what you're doing, don't complicate it. Maybe name it counter or something, but other than that you're good to go as far as pythonic goes.