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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 delete(self):
 """ Deletes all objects that matches to the queryset. Note: Unlike RDBMS systems, this method makes individual save calls to backend DB store. So this is exists as more of a comfortable utility method and not a performance enhancement. Returns: List of deleted objects or None if *confirm* not set. Example: """

        clone = copy.deepcopy(self)
        # clone.adapter.want_deleted = True
        return [item.delete() and item for item in clone]