[CentralOH] Python Singleton

[John Santiago]

Hi all,

I am trying to write a singleton like I would an Actionsctipt. I have been
doing some research on the interwebs and came up with this.

class Singleton(object):
    __instance = None
    __lockInstance = threading.RLock()

    def __new__(cls, *args, **kwargs):
        raise TypeError("Error: Singletons may only be instantiated through
getInstance()")

    def __init__(self):
        print 'hi'

    @classmethod
    def getInstance(cls, *args, **kwargs):
        if cls.__instance is None:
            try:
                cls.__lockInstance.acquire()
                cls.__instance = object.__new__(cls, *args, **kwargs)
                cls.__instance.__init__()
            finally:
                cls.__lockInstance.release()

        return cls.__instance



It works but is it the right way?

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