[CentralOH] Another Revision of Singleton

[John Santiago]

Found som really great post. Really hoping this is the right way to go
about it. revised the getInstance

import threading


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

    def __new__(cls):
        raise TypeError("Error: Singletons may only be instantiated through
getInstance().")

    def __init__(self, *args, **kwargs):
        pass

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

        return cls.__instance

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