I would like to be able to create a list of all instances of a class. Another post here described how to do it by appending to a list during the __init__ routine but since I am a real Python newbie (and even more of a newbie to classes) I was hoping someone could post a simple code example to show a real world example of this. Thanks in advance.

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Well, here is an example

class Thingy(object):
    instances = []

    def __init__(self):

def waste_time_and_memory():
    t = Thingy()

for i in range(5):

print Thingy.instances

""" My output -->
[<__main__.Thingy object at 0x7f0581777c50>, <__main__.Thingy object at 0x7f0581777c90>, <__main__.Thingy object at 0x7f0581777cd0>, <__main__.Thingy object at 0x7f0581777d10>, <__main__.Thingy object at 0x7f0581777d50>]

The main problem is that Thingy objects are immortal unless you empty the list periodically.

commented: Just joined to say thanks for this workaround. I think I will continue finding nice solutions in this place. +0

Brilliant. That's just what I was after. So much easier to understand to actually see the code. Thanks for taking the time to help me.

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