class Property(object): def __init__(self, value = None): self.value = value def getValue(self): return self.value def setValue(self, value): self.value = value class PropertyManager(object): sharedInstance = None @staticmethod def getSharedInstance(): if PropertyManager.sharedInstance is None: PropertyManager.sharedInstance = PropertyManager() return PropertyManager.sharedInstance def __init__(self): self.properties = {} def getProperty(self, name): if not name in self.properties: self.properties[name] = Property() return self.properties[name]