Python Instantiate Class Within Class Definition

Question

I am attempting to add a variable to a class that holds instances to the class. The following is a shortened version of my code.

class Classy :
    def __in         


        

Answer 1

The class itself is not defined until after the class block finishes executing, so you can't make use of the class inside its own definition.

You could use a class decorator or a metaclass to add your desired class variable after the class is created. Here's an example with a decorator.

def addClassy(cls):
    cls.CLASSIES = [cls() for a in xrange(4)]
    return cls

@addClassy
class Classy(object):
    pass

>>> Classy.CLASSIES
0: [<__main__.Classy object at 0x000000000289A240>,
 <__main__.Classy object at 0x000000000289A518>,
 <__main__.Classy object at 0x000000000289A198>,
 <__main__.Classy object at 0x000000000289A208>]