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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def init_datastores(self):
 """Initialize datastores for this analysis instance. This creates instances of :class:`.Datastore` at ``data`` and ``class_data`` with the datastore domains being the current id and the class name of this analysis respectively. Overwrite this method to use other datastore backends. """

        self.data = Datastore(self.id_)
        self.data.subscribe(lambda data: self.emit('data', data))
        self.class_data = Datastore(type(self).__name__)
        self.class_data.subscribe(lambda data: self.emit('class_data', data))