'Singleton instance to avoid repeat setup'

def __new__(cls, settings_name=u'zappa_settings', session=None):

    if (LambdaHandler.__instance is None):
        if (sys.version_info[0] < 3):
            LambdaHandler.__instance = object.__new__(cls, settings_name, session)
        else:
            print u'Instancing..'
            LambdaHandler.__instance = object.__new__(cls)
    return LambdaHandler.__instance
