Z'i[dZGddeZy)z$ Defines the base constance backend ceZdZdZdZdZy)Backendct)zl Get the key from the backend store and return the value. Return None if not found. NotImplementedError)selfkeys )/opt/sopds/constance/backends/__init__.pygetz Backend.get "!ct)z Get the keys from the backend store and return a list of the values. Return an empty list if not found. r)rkeyss r mgetz Backend.mgetr r ct)zC Add the value to the backend store given the key. r)rrvalues r setz Backend.sets "!r N)__name__ __module__ __qualname__r rrr r rrs"""r rN)__doc__objectrrr r rs "f"r